Travis build: 1072

This commit is contained in:
30secondsofcode
2019-03-19 07:41:59 +00:00
parent 63a70ee86d
commit fdfb1a9b52
9 changed files with 32 additions and 19 deletions

View File

@ -677,7 +677,7 @@ const sum = pipeAsyncFunctions(
x => x + 3,
async x => (await x) + 4
);
(async () => {
(async() => {
console.log(await sum(5)); // 15 (after one second)
})();
```
@ -892,7 +892,9 @@ Omit the second argument, `delimiter`, to use a default delimiter of `,`.
```js
const arrayToCSV = (arr, delimiter = ',') =>
arr.map(v => v.map(x => `"${x}"`).join(delimiter)).join('\n');
arr
.map(v => v.map(x => (isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x)).join(delimiter))
.join('\n');
```
<details>
@ -901,6 +903,7 @@ const arrayToCSV = (arr, delimiter = ',') =>
```js
arrayToCSV([['a', 'b'], ['c', 'd']]); // '"a","b"\n"c","d"'
arrayToCSV([['a', 'b'], ['c', 'd']], ';'); // '"a";"b"\n"c";"d"'
arrayToCSV([['a', '"b" great'], ['c', 3.1415]]); // '"a","""b"" great"\n"c",3.1415'
```
</details>
@ -4667,6 +4670,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
```js
const lengthIs4 = checkProp(l => l === 4, 'length');
lengthIs4([]); // false
lengthIs4([1,2,3,4]); // true

View File

@ -133,7 +133,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
x <span class="token operator">=></span> x <span class="token operator">+</span> <span class="token number">3</span><span class="token punctuation">,</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>
<span class="token punctuation">);
(</span><span class="token keyword">async</span> <span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
(</span><span class="token keyword">async</span><span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
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>
<span class="token punctuation">})();</span>
</pre></div><div class="card code-card"><div class="section card-content"><h4><a href="https://frontendmasters.com/courses/es6-right-parts/" target="_blank" rel="noopener noreferrer">Recommended Resource - ES6: The Right Parts</a></h4><p>Learn new ES6 JavaScript language features like arrow function, destructuring, generators & more to write cleaner and more productive, readable programs.</p></div></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>

View File

@ -145,6 +145,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
]);</span>
</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="checkprop">checkProp</h4><p>Given a <code>predicate</code> function and a <code>prop</code> string, this curried function will then take an <code>object</code> to inspect by calling the property and passing it to the predicate.</p><p>Summon <code>prop</code> on <code>obj</code>, pass it to a provided <code>predicate</code> function and return a masked boolean.</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">checkProp</span> <span class="token operator">=</span> <span class="token punctuation">(</span>predicate<span class="token punctuation">,</span> prop<span class="token punctuation">)</span> <span class="token operator">=></span> obj <span class="token operator">=> !!</span><span class="token function">predicate</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">]);</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js">
<span class="token keyword">const</span> lengthIs4 <span class="token operator">=</span> <span class="token function">checkProp</span><span class="token punctuation">(</span>l <span class="token operator">=></span> l <span class="token operator">===</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token string">'length'</span><span class="token punctuation">);</span>
<span class="token function">lengthIs4</span><span class="token punctuation">([]);</span> <span class="token comment">// false</span>
<span class="token function">lengthIs4</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// true</span>

View File

@ -103,9 +103,12 @@
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">any</span><span class="token punctuation">([</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">],</span> x <span class="token operator">=></span> x <span class="token operator">>=</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
<span class="token function">any</span><span class="token punctuation">([</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">0</span><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 comment">// true</span>
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="arraytocsv">arrayToCSV</h4><p>Converts a 2D array to a comma-separated values (CSV) string.</p><p>Use <code>Array.prototype.map()</code> and <code>Array.prototype.join(delimiter)</code> to combine individual 1D arrays (rows) into strings. Use <code>Array.prototype.join('\n')</code> to combine all rows into a CSV string, separating each row with a newline. Omit the second argument, <code>delimiter</code>, to use a default delimiter of <code>,</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> arrayToCSV <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> delimiter <span class="token operator">=</span> <span class="token string">','</span><span class="token punctuation">)</span> <span class="token operator">=></span>
arr<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>v <span class="token operator">=></span> v<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> <span class="token template-string"><span class="token string">`"</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>x<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">"`</span></span><span class="token punctuation">).</span><span class="token function">join</span><span class="token punctuation">(</span>delimiter<span class="token punctuation">)).</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">'\n'</span><span class="token punctuation">);</span>
arr
<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>v <span class="token operator">=></span> v<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token function">isNaN</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token template-string"><span class="token string">`"</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>x<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/"/g</span><span class="token punctuation">,</span> <span class="token string">'""'</span><span class="token punctuation">)</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">"`</span></span> <span class="token punctuation">:</span> x<span class="token punctuation">)).</span><span class="token function">join</span><span class="token punctuation">(</span>delimiter<span class="token punctuation">))
.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">'\n'</span><span class="token punctuation">);</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">arrayToCSV</span><span class="token punctuation">([[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'b'</span><span class="token punctuation">], [</span><span class="token string">'c'</span><span class="token punctuation">,</span> <span class="token string">'d'</span><span class="token punctuation">]]);</span> <span class="token comment">// '"a","b"\n"c","d"'</span>
<span class="token function">arrayToCSV</span><span class="token punctuation">([[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'b'</span><span class="token punctuation">], [</span><span class="token string">'c'</span><span class="token punctuation">,</span> <span class="token string">'d'</span><span class="token punctuation">]],</span> <span class="token string">';'</span><span class="token punctuation">);</span> <span class="token comment">// '"a";"b"\n"c";"d"'</span>
<span class="token function">arrayToCSV</span><span class="token punctuation">([[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'"b" great'</span><span class="token punctuation">], [</span><span class="token string">'c'</span><span class="token punctuation">,</span> <span class="token number">3.1415</span><span class="token punctuation">]]);</span> <span class="token comment">// '"a","""b"" great"\n"c",3.1415'</span>
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="bifurcate">bifurcate</h4><p>Splits values into two groups. If an element in <code>filter</code> is truthy, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group.</p><p>Use <code>Array.prototype.reduce()</code> and <code>Array.prototype.push()</code> to add elements to groups, based on <code>filter</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">bifurcate</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> filter<span class="token punctuation">)</span> <span class="token operator">=></span>
arr<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> i<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>acc<span class="token punctuation">[</span>filter<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">?</span> <span class="token number">0</span> <span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">].</span><span class="token function">push</span><span class="token punctuation">(</span>val<span class="token punctuation">),</span> acc<span class="token punctuation">), [[], []]);</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">bifurcate</span><span class="token punctuation">([</span><span class="token string">'beep'</span><span class="token punctuation">,</span> <span class="token string">'boop'</span><span class="token punctuation">,</span> <span class="token string">'foo'</span><span class="token punctuation">,</span> <span class="token string">'bar'</span><span class="token punctuation">], [</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">]);</span> <span class="token comment">// [ ['beep', 'boop', 'bar'], ['foo'] ]</span>

View File

@ -8,7 +8,9 @@ Omit the second argument, `delimiter`, to use a default delimiter of `,`.
```js
const arrayToCSV = (arr, delimiter = ',') =>
arr.map(v => v.map(x => isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x ).join(delimiter)).join('\n');
arr
.map(v => v.map(x => (isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x)).join(delimiter))
.join('\n');
```
```js

View File

@ -10,6 +10,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
```js
const lengthIs4 = checkProp(l => l === 4, 'length');
lengthIs4([]); // false
lengthIs4([1,2,3,4]); // true

View File

@ -17,7 +17,7 @@ const sum = pipeAsyncFunctions(
x => x + 3,
async x => (await x) + 4
);
(async () => {
(async() => {
console.log(await sum(5)); // 15 (after one second)
})();
```

View File

@ -53,7 +53,9 @@ const allEqual = arr => arr.every(val => val === arr[0]);
const any = (arr, fn = Boolean) => arr.some(fn);
const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
const arrayToCSV = (arr, delimiter = ',') =>
arr.map(v => v.map(x => `"${x}"`).join(delimiter)).join('\n');
arr
.map(v => v.map(x => (isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x)).join(delimiter))
.join('\n');
const arrayToHtmlList = (arr, listID) =>
(el => (
(el = document.querySelector('#' + listID)),