Travis build: 888
This commit is contained in:
@ -670,7 +670,7 @@ const sum = pipeAsyncFunctions(
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x => x + 3,
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x => x + 3,
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async x => (await x) + 4
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async x => (await x) + 4
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);
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);
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(async() => {
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(async () => {
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console.log(await sum(5)); // 15 (after one second)
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console.log(await sum(5)); // 15 (after one second)
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})();
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})();
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```
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```
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@ -5490,6 +5490,7 @@ Otherwise, return the product of `n` and the factorial of `n - 1`.
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Throws an exception if `n` is a negative number.
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Throws an exception if `n` is a negative number.
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|
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```js
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```js
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|
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const factorial = n =>
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const factorial = n =>
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n < 0
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n < 0
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? (() => {
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? (() => {
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@ -6718,6 +6719,7 @@ Use `Object.keys(obj)` to iterate over the object's keys.
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Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
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Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
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|
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```js
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```js
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|
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const deepMapKeys = (obj, f) =>
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const deepMapKeys = (obj, f) =>
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Array.isArray(obj)
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Array.isArray(obj)
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? obj.map(val => deepMapKeys(val, f))
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? obj.map(val => deepMapKeys(val, f))
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@ -6797,6 +6799,7 @@ Use the `in` operator to check if `target` exists in `obj`.
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If found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
|
If found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
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|
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```js
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```js
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|
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const dig = (obj, target) =>
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const dig = (obj, target) =>
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target in obj
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target in obj
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? obj[target]
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? obj[target]
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@ -131,7 +131,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
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x <span class="token operator">=></span> x <span class="token operator">+</span> <span class="token number">3</span><span class="token punctuation">,</span>
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x <span class="token operator">=></span> x <span class="token operator">+</span> <span class="token number">3</span><span class="token punctuation">,</span>
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<span class="token keyword">async</span> x <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token keyword">await</span> x<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">4</span>
|
<span class="token keyword">async</span> x <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token keyword">await</span> x<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">4</span>
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<span class="token punctuation">);
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<span class="token punctuation">);
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(</span><span class="token keyword">async</span><span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
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(</span><span class="token keyword">async</span> <span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
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console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token keyword">await</span> <span class="token function">sum</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">));</span> <span class="token comment">// 15 (after one second)</span>
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console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token keyword">await</span> <span class="token function">sum</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">));</span> <span class="token comment">// 15 (after one second)</span>
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<span class="token punctuation">})();</span>
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<span class="token punctuation">})();</span>
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</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="pipefunctions">pipeFunctions</h4><p>Performs left-to-right function composition.</p><p>Use <code>Array.prototype.reduce()</code> with the spread operator (<code>...</code>) to perform left-to-right function composition. The first (leftmost) function can accept one or more arguments; the remaining functions must be unary.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">pipeFunctions</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>fns<span class="token punctuation">)</span> <span class="token operator">=></span> fns<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>f<span class="token punctuation">,</span> g<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">g</span><span class="token punctuation">(</span><span class="token function">f</span><span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)));</span>
|
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="pipefunctions">pipeFunctions</h4><p>Performs left-to-right function composition.</p><p>Use <code>Array.prototype.reduce()</code> with the spread operator (<code>...</code>) to perform left-to-right function composition. The first (leftmost) function can accept one or more arguments; the remaining functions must be unary.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">pipeFunctions</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>fns<span class="token punctuation">)</span> <span class="token operator">=></span> fns<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>f<span class="token punctuation">,</span> g<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">g</span><span class="token punctuation">(</span><span class="token function">f</span><span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)));</span>
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@ -147,7 +147,8 @@ For teams, each rating can adjusted based on own team's average rating vs.
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average rating of opposing team, with the score being added to their
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average rating of opposing team, with the score being added to their
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own individual rating by supplying it as the third argument.
|
own individual rating by supplying it as the third argument.
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*/</span>
|
*/</span>
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</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="factorial">factorial</h4><p>Calculates the factorial of a number.</p><p>Use recursion. If <code>n</code> is less than or equal to <code>1</code>, return <code>1</code>. Otherwise, return the product of <code>n</code> and the factorial of <code>n - 1</code>. Throws an exception if <code>n</code> is a negative number.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">factorial</span> <span class="token operator">=</span> n <span class="token operator">=></span>
|
</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="factorial">factorial</h4><p>Calculates the factorial of a number.</p><p>Use recursion. If <code>n</code> is less than or equal to <code>1</code>, return <code>1</code>. Otherwise, return the product of <code>n</code> and the factorial of <code>n - 1</code>. Throws an exception if <code>n</code> is a negative number.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js">
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|
<span class="token keyword">const</span> <span class="token function-variable function">factorial</span> <span class="token operator">=</span> n <span class="token operator">=></span>
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n <span class="token operator"><</span> <span class="token number">0</span>
|
n <span class="token operator"><</span> <span class="token number">0</span>
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||||||
<span class="token operator">?</span> <span class="token punctuation">(()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
|
<span class="token operator">?</span> <span class="token punctuation">(()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
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<span class="token keyword">throw new</span> <span class="token class-name">TypeError</span><span class="token punctuation">(</span><span class="token string">'Negative numbers are not allowed!'</span><span class="token punctuation">);
|
<span class="token keyword">throw new</span> <span class="token class-name">TypeError</span><span class="token punctuation">(</span><span class="token string">'Negative numbers are not allowed!'</span><span class="token punctuation">);
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@ -128,7 +128,8 @@
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|||||||
|
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||||||
o<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token number">3</span><span class="token punctuation">;</span> <span class="token comment">// not allowed</span>
|
o<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token number">3</span><span class="token punctuation">;</span> <span class="token comment">// not allowed</span>
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o<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">][</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token number">4</span><span class="token punctuation">;</span> <span class="token comment">// not allowed as well</span>
|
o<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">][</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token number">4</span><span class="token punctuation">;</span> <span class="token comment">// not allowed as well</span>
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||||||
</pre></div><div class="card code-card"><div class="corner advanced"></div><div class="section card-content"><h4 id="deepmapkeys">deepMapKeys</h4><p>Deep maps an object keys.</p><p>Creates an object with the same values as the provided object and keys generated by running the provided function for each key.</p><p>Use <code>Object.keys(obj)</code> to iterate over the object's keys. Use <code>Array.prototype.reduce()</code> to create a new object with the same values and mapped keys using <code>fn</code>.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">deepMapKeys</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> f<span class="token punctuation">)</span> <span class="token operator">=></span>
|
</pre></div><div class="card code-card"><div class="corner advanced"></div><div class="section card-content"><h4 id="deepmapkeys">deepMapKeys</h4><p>Deep maps an object keys.</p><p>Creates an object with the same values as the provided object and keys generated by running the provided function for each key.</p><p>Use <code>Object.keys(obj)</code> to iterate over the object's keys. Use <code>Array.prototype.reduce()</code> to create a new object with the same values and mapped keys using <code>fn</code>.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js">
|
||||||
|
<span class="token keyword">const</span> <span class="token function-variable function">deepMapKeys</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> f<span class="token punctuation">)</span> <span class="token operator">=></span>
|
||||||
Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>obj<span class="token punctuation">)</span>
|
Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>obj<span class="token punctuation">)</span>
|
||||||
<span class="token operator">?</span> obj<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>val <span class="token operator">=></span> <span class="token function">deepMapKeys</span><span class="token punctuation">(</span>val<span class="token punctuation">,</span> f<span class="token punctuation">))
|
<span class="token operator">?</span> obj<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>val <span class="token operator">=></span> <span class="token function">deepMapKeys</span><span class="token punctuation">(</span>val<span class="token punctuation">,</span> f<span class="token punctuation">))
|
||||||
:</span> <span class="token keyword">typeof</span> obj <span class="token operator">===</span> <span class="token string">'object'</span>
|
:</span> <span class="token keyword">typeof</span> obj <span class="token operator">===</span> <span class="token string">'object'</span>
|
||||||
@ -168,7 +169,8 @@ o<span class="token punctuation">[</span><span class="token number">1</span><spa
|
|||||||
*/</span>
|
*/</span>
|
||||||
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="defaults">defaults</h4><p>Assigns default values for all properties in an object that are <code>undefined</code>.</p><p>Use <code>Object.assign()</code> to create a new empty object and copy the original one to maintain key order, use <code>Array.prototype.reverse()</code> and the spread operator <code>...</code> to combine the default values from left to right, finally use <code>obj</code> again to overwrite properties that originally had a value.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">defaults</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> <span class="token operator">...</span>defs<span class="token punctuation">)</span> <span class="token operator">=></span> Object<span class="token punctuation">.</span><span class="token function">assign</span><span class="token punctuation">({},</span> obj<span class="token punctuation">,</span> <span class="token operator">...</span>defs<span class="token punctuation">.</span><span class="token function">reverse</span><span class="token punctuation">(),</span> obj<span class="token punctuation">);</span>
|
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="defaults">defaults</h4><p>Assigns default values for all properties in an object that are <code>undefined</code>.</p><p>Use <code>Object.assign()</code> to create a new empty object and copy the original one to maintain key order, use <code>Array.prototype.reverse()</code> and the spread operator <code>...</code> to combine the default values from left to right, finally use <code>obj</code> again to overwrite properties that originally had a value.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">defaults</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> <span class="token operator">...</span>defs<span class="token punctuation">)</span> <span class="token operator">=></span> Object<span class="token punctuation">.</span><span class="token function">assign</span><span class="token punctuation">({},</span> obj<span class="token punctuation">,</span> <span class="token operator">...</span>defs<span class="token punctuation">.</span><span class="token function">reverse</span><span class="token punctuation">(),</span> obj<span class="token punctuation">);</span>
|
||||||
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">defaults</span><span class="token punctuation">({</span> a<span class="token punctuation">:</span> <span class="token number">1</span> <span class="token punctuation">}, {</span> b<span class="token punctuation">:</span> <span class="token number">2</span> <span class="token punctuation">}, {</span> b<span class="token punctuation">:</span> <span class="token number">6</span> <span class="token punctuation">}, {</span> a<span class="token punctuation">:</span> <span class="token number">3</span> <span class="token punctuation">});</span> <span class="token comment">// { a: 1, b: 2 }</span>
|
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">defaults</span><span class="token punctuation">({</span> a<span class="token punctuation">:</span> <span class="token number">1</span> <span class="token punctuation">}, {</span> b<span class="token punctuation">:</span> <span class="token number">2</span> <span class="token punctuation">}, {</span> b<span class="token punctuation">:</span> <span class="token number">6</span> <span class="token punctuation">}, {</span> a<span class="token punctuation">:</span> <span class="token number">3</span> <span class="token punctuation">});</span> <span class="token comment">// { a: 1, b: 2 }</span>
|
||||||
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="dig">dig</h4><p>Returns the target value in a nested JSON object, based on the given key.</p><p>Use the <code>in</code> operator to check if <code>target</code> exists in <code>obj</code>. If found, return the value of <code>obj[target]</code>, otherwise use <code>Object.values(obj)</code> and <code>Array.prototype.reduce()</code> to recursively call <code>dig</code> on each nested object until the first matching key/value pair is found.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">dig</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> target<span class="token punctuation">)</span> <span class="token operator">=></span>
|
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="dig">dig</h4><p>Returns the target value in a nested JSON object, based on the given key.</p><p>Use the <code>in</code> operator to check if <code>target</code> exists in <code>obj</code>. If found, return the value of <code>obj[target]</code>, otherwise use <code>Object.values(obj)</code> and <code>Array.prototype.reduce()</code> to recursively call <code>dig</code> on each nested object until the first matching key/value pair is found.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js">
|
||||||
|
<span class="token keyword">const</span> <span class="token function-variable function">dig</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> target<span class="token punctuation">)</span> <span class="token operator">=></span>
|
||||||
target <span class="token keyword">in</span> obj
|
target <span class="token keyword">in</span> obj
|
||||||
<span class="token operator">?</span> obj<span class="token punctuation">[</span>target<span class="token punctuation">]
|
<span class="token operator">?</span> obj<span class="token punctuation">[</span>target<span class="token punctuation">]
|
||||||
:</span> Object<span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
|
:</span> Object<span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
|
||||||
|
|||||||
@ -8,6 +8,7 @@ Use `Object.keys(obj)` to iterate over the object's keys.
|
|||||||
Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
|
Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
|
||||||
|
|
||||||
```js
|
```js
|
||||||
|
|
||||||
const deepMapKeys = (obj, f) =>
|
const deepMapKeys = (obj, f) =>
|
||||||
Array.isArray(obj)
|
Array.isArray(obj)
|
||||||
? obj.map(val => deepMapKeys(val, f))
|
? obj.map(val => deepMapKeys(val, f))
|
||||||
|
|||||||
@ -6,6 +6,7 @@ Use the `in` operator to check if `target` exists in `obj`.
|
|||||||
If found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
|
If found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
|
||||||
|
|
||||||
```js
|
```js
|
||||||
|
|
||||||
const dig = (obj, target) =>
|
const dig = (obj, target) =>
|
||||||
target in obj
|
target in obj
|
||||||
? obj[target]
|
? obj[target]
|
||||||
|
|||||||
@ -8,6 +8,7 @@ Otherwise, return the product of `n` and the factorial of `n - 1`.
|
|||||||
Throws an exception if `n` is a negative number.
|
Throws an exception if `n` is a negative number.
|
||||||
|
|
||||||
```js
|
```js
|
||||||
|
|
||||||
const factorial = n =>
|
const factorial = n =>
|
||||||
n < 0
|
n < 0
|
||||||
? (() => {
|
? (() => {
|
||||||
|
|||||||
@ -17,7 +17,7 @@ const sum = pipeAsyncFunctions(
|
|||||||
x => x + 3,
|
x => x + 3,
|
||||||
async x => (await x) + 4
|
async x => (await x) + 4
|
||||||
);
|
);
|
||||||
(async() => {
|
(async () => {
|
||||||
console.log(await sum(5)); // 15 (after one second)
|
console.log(await sum(5)); // 15 (after one second)
|
||||||
})();
|
})();
|
||||||
```
|
```
|
||||||
|
|||||||
@ -224,6 +224,7 @@ const deepFreeze = obj =>
|
|||||||
prop =>
|
prop =>
|
||||||
!(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
|
!(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
|
||||||
) || Object.freeze(obj);
|
) || Object.freeze(obj);
|
||||||
|
|
||||||
const deepMapKeys = (obj, f) =>
|
const deepMapKeys = (obj, f) =>
|
||||||
Array.isArray(obj)
|
Array.isArray(obj)
|
||||||
? obj.map(val => deepMapKeys(val, f))
|
? obj.map(val => deepMapKeys(val, f))
|
||||||
@ -252,6 +253,7 @@ const differenceBy = (a, b, fn) => {
|
|||||||
return a.filter(x => !s.has(fn(x)));
|
return a.filter(x => !s.has(fn(x)));
|
||||||
};
|
};
|
||||||
const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
|
const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
|
||||||
|
|
||||||
const dig = (obj, target) =>
|
const dig = (obj, target) =>
|
||||||
target in obj
|
target in obj
|
||||||
? obj[target]
|
? obj[target]
|
||||||
@ -327,6 +329,7 @@ const extendHex = shortHex =>
|
|||||||
.split('')
|
.split('')
|
||||||
.map(x => x + x)
|
.map(x => x + x)
|
||||||
.join('');
|
.join('');
|
||||||
|
|
||||||
const factorial = n =>
|
const factorial = n =>
|
||||||
n < 0
|
n < 0
|
||||||
? (() => {
|
? (() => {
|
||||||
|
|||||||
Reference in New Issue
Block a user