fix typo
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16
README.md
16
README.md
@ -408,7 +408,7 @@ Use `Array((end + 1) - start)` to create an array of the desired length, `Array.
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You can omit `start` to use a default value of `0`.
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```js
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const initializeArrayWithRange = (end, start = 0) =>
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const initializeArrayWithRange = (end, start = 0) =>
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Array.from({ length: (end + 1) - start }).map((v, i) => i + start);
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// initializeArrayWithRange(5) -> [0,1,2,3,4,5]
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// initializeArrayWithRange(7, 3) -> [3,4,5,6,7]
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@ -463,7 +463,7 @@ Maps the values of an array to an object using a function, where the key-value p
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Use an anonymous inner function scope to declare an undefined memory space, using closures to store a return value. Use a new `Array` to stor 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).
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```js
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const mapObject = (arr, fn) =>
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const mapObject = (arr, fn) =>
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(a => (a = [arr, arr.map(fn)], a[0].reduce( (acc,val,ind) => (acc[val] = a[1][ind], acc), {}) )) ( );
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/*
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const squareIt = arr => mapObject(arr, a => a*a)
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@ -535,14 +535,14 @@ Mutates the original array to filter out the values at the specified indexes.
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Use `Array.filter()` and `Array.includes()` to pull out the values that are not needed.
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Use `Array.length = 0` to mutate the passed in array by resetting it's length to zero and `Array.push()` to re-populate it with only the pulled values.
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Use `Array.push()` to keep track of pulled values
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Use `Array.push()` to keep track of pulled values
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```js
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const pullAtIndex = (arr, pullArr) => {
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let removed = [];
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let pulled = arr.map((v, i) => pullArr.includes(i) ? removed.push(v) : v)
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.filter((v, i) => !pullArr.includes(i))
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arr.length = 0;
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arr.length = 0;
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pulled.forEach(v => arr.push(v));
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return removed;
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}
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@ -562,11 +562,11 @@ Mutates the original array to filter out the values specified. Returns the remov
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Use `Array.filter()` and `Array.includes()` to pull out the values that are not needed.
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Use `Array.length = 0` to mutate the passed in array by resetting it's length to zero and `Array.push()` to re-populate it with only the pulled values.
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Use `Array.push()` to keep track of pulled values
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Use `Array.push()` to keep track of pulled values
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```js
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const pullAtValue = (arr, pullArr) => {
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let removed = [],
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let removed = [],
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pushToRemove = arr.forEach((v, i) => pullArr.includes(v) ? removed.push(v) : v),
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mutateTo = arr.filter((v, i) => !pullArr.includes(v));
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arr.length = 0;
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@ -1219,7 +1219,7 @@ const isEven = num => num % 2 === 0;
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### isPrime
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Checks if the provided intiger is primer number.
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Checks if the provided intiger is prime number.
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Returns `false` if the provided number has positive divisors other than 1 and itself or if the number itself is less than 2.
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@ -1527,7 +1527,7 @@ a === b -> false
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Checks if the predicate (second argument) is truthy on all elements of a collection (first argument).
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Use `Array.every()` to check if each passed object has the specified property and if it returns a truthy value.
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```js
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truthCheckCollection = (collection, pre) => (collection.every(obj => obj[pre]));
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// truthCheckCollection([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}], "sex") -> true
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@ -302,7 +302,7 @@ Use <code>Array.reduce()</code> to create an object, where the keys are produced
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<p>Initializes an array containing the numbers in the specified range where <code>start</code> and <code>end</code> are inclusive.</p>
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<p>Use <code>Array((end + 1) - start)</code> to create an array of the desired length, <code>Array.map()</code> to fill with the desired values in a range.
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You can omit <code>start</code> to use a default value of <code>0</code>.</p>
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<pre><code class="language-js">const initializeArrayWithRange = (end, start = 0) =>
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<pre><code class="language-js">const initializeArrayWithRange = (end, start = 0) =>
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Array.from({ length: (end + 1) - start }).map((v, i) => i + start);
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// initializeArrayWithRange(5) -> [0,1,2,3,4,5]
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// initializeArrayWithRange(7, 3) -> [3,4,5,6,7]
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@ -329,7 +329,7 @@ You can omit <code>value</code> to use a default value of <code>0</code>.</p>
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</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="mapobject">mapObject</h3></div><div class="section double-padded">
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<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>
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<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 stor 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>
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<pre><code class="language-js">const mapObject = (arr, fn) =>
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<pre><code class="language-js">const mapObject = (arr, fn) =>
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(a => (a = [arr, arr.map(fn)], a[0].reduce( (acc,val,ind) => (acc[val] = a[1][ind], acc), {}) )) ( );
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/*
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const squareIt = arr => mapObject(arr, a => a*a)
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@ -379,7 +379,7 @@ Use <code>Array.push()</code> to keep track of pulled values</p>
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let removed = [];
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let pulled = arr.map((v, i) => pullArr.includes(i) ? removed.push(v) : v)
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.filter((v, i) => !pullArr.includes(i))
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arr.length = 0;
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arr.length = 0;
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pulled.forEach(v => arr.push(v));
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return removed;
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}
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@ -396,7 +396,7 @@ Use <code>Array.push()</code> to keep track of pulled values</p>
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Use <code>Array.length = 0</code> to mutate the passed in array by resetting it's length to zero and <code>Array.push()</code> to re-populate it with only the pulled values.
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Use <code>Array.push()</code> to keep track of pulled values</p>
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<pre><code class="language-js">const pullAtValue = (arr, pullArr) => {
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let removed = [],
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let removed = [],
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pushToRemove = arr.forEach((v, i) => pullArr.includes(v) ? removed.push(v) : v),
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mutateTo = arr.filter((v, i) => !pullArr.includes(v));
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arr.length = 0;
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@ -763,7 +763,7 @@ Returns <code>true</code> if the number is even, <code>false</code> if the numbe
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// isEven(3) -> false
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</code></pre>
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</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="isprime">isPrime</h3></div><div class="section double-padded">
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<p>Checks if the provided intiger is primer number.</p>
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<p>Checks if the provided intiger is prime number.</p>
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<p>Returns <code>false</code> if the provided number has positive divisors other than 1 and itself or if the number itself is less than 2.</p>
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<pre><code class="language-js">const isPrime = num =>
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for (var i = 2; i < num; i++) if (num % i == 0) return false;
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