|
|
|
@ -294,7 +294,7 @@
|
|
|
|
<span class="token function">longestItem</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'ab'</span><span class="token punctuation">,</span> <span class="token string">'abc'</span><span class="token punctuation">],</span> <span class="token string">'abcd'</span><span class="token punctuation">);</span> <span class="token comment">// 'abcd'</span>
|
|
|
|
<span class="token function">longestItem</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'ab'</span><span class="token punctuation">,</span> <span class="token string">'abc'</span><span class="token punctuation">],</span> <span class="token string">'abcd'</span><span class="token punctuation">);</span> <span class="token comment">// 'abcd'</span>
|
|
|
|
<span class="token function">longestItem</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">1</span><span class="token punctuation">,</span> <span class="token number">2</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 number">5</span><span class="token punctuation">]);</span> <span class="token comment">// [1, 2, 3, 4, 5]</span>
|
|
|
|
<span class="token function">longestItem</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">1</span><span class="token punctuation">,</span> <span class="token number">2</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 number">5</span><span class="token punctuation">]);</span> <span class="token comment">// [1, 2, 3, 4, 5]</span>
|
|
|
|
<span class="token function">longestItem</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 string">'foobar'</span><span class="token punctuation">);</span> <span class="token comment">// 'foobar'</span>
|
|
|
|
<span class="token function">longestItem</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 string">'foobar'</span><span class="token punctuation">);</span> <span class="token comment">// 'foobar'</span>
|
|
|
|
</pre></div><div class="card code-card"><div class="corner advanced" aria-label="advanced" title="advanced"></div><div class="section card-content"><h4 id="mapobject">mapObject</h4><p>Maps the values of an array to an object using a function, where the key-value pairs consist of the original value as the key and the mapped value.</p><p>Use an anonymous inner function scope to declare an undefined memory space, using closures to store a return value. Use a new <code>Array</code> to store the array with a map of the function over its data set and a comma operator to return a second step, without needing to move from one context to another (due to closures and order of operations).</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">mapObject</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> fn<span class="token punctuation">)</span> <span class="token operator">=></span>
|
|
|
|
</pre></div><div class="card code-card"><div class="corner advanced" aria-label="advanced" title="advanced"></div><div class="section card-content"><h4 id="mapobject">mapObject</h4><p>Maps the values of an array to an object using a function, where the key-value pairs consist of the stringified value as the key and the mapped value.</p><p>Use an anonymous inner function scope to declare an undefined memory space, using closures to store a return value. Use a new <code>Array</code> to store the array with a map of the function over its data set and a comma operator to return a second step, without needing to move from one context to another (due to closures and order of operations).</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">mapObject</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> fn<span class="token punctuation">)</span> <span class="token operator">=></span>
|
|
|
|
<span class="token punctuation">(</span>a <span class="token operator">=></span> <span class="token punctuation">(
|
|
|
|
<span class="token punctuation">(</span>a <span class="token operator">=></span> <span class="token punctuation">(
|
|
|
|
(</span>a <span class="token operator">=</span> <span class="token punctuation">[</span>arr<span class="token punctuation">,</span> arr<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>fn<span class="token punctuation">)]),</span> a<span class="token punctuation">[</span><span class="token number">0</span><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> ind<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>acc<span class="token punctuation">[</span>val<span class="token punctuation">]</span> <span class="token operator">=</span> a<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">][</span>ind<span class="token punctuation">]),</span> acc<span class="token punctuation">), {})
|
|
|
|
(</span>a <span class="token operator">=</span> <span class="token punctuation">[</span>arr<span class="token punctuation">,</span> arr<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>fn<span class="token punctuation">)]),</span> a<span class="token punctuation">[</span><span class="token number">0</span><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> ind<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>acc<span class="token punctuation">[</span>val<span class="token punctuation">]</span> <span class="token operator">=</span> a<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">][</span>ind<span class="token punctuation">]),</span> acc<span class="token punctuation">), {})
|
|
|
|
))();</span>
|
|
|
|
))();</span>
|
|
|
|
|