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Mainly for better readability
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Angelos Chalaris
2017-12-12 18:21:53 +02:00
parent 7758e59f0e
commit e2d2b6aa41
5 changed files with 12 additions and 14 deletions
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13
README.md
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@ -299,10 +299,10 @@ const initializeArrayRange = (end, start = 0) =>
### Initialize array with values ### Initialize array with values
Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values. Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values.
You can omit `v` to use a default value of `0`. You can omit `value` to use a default value of `0`.
```js ```js
const initializeArray = (n, v = 0) => Array(n).fill(v); const initializeArray = (n, value = 0) => Array(n).fill(value);
// initializeArray(5, 2) -> [2,2,2,2,2] // initializeArray(5, 2) -> [2,2,2,2,2]
``` ```
@ -321,8 +321,8 @@ Use `performance.now()` to get start and end time for the function, `console.log
First argument is the function name, subsequent arguments are passed to the function. First argument is the function name, subsequent arguments are passed to the function.
```js ```js
const timeTaken = (f,...args) => { const timeTaken = (func,...args) => {
var t0 = performance.now(), r = f(...args); var t0 = performance.now(), r = func(...args);
console.log(performance.now() - t0); console.log(performance.now() - t0);
return r; return r;
} }
@ -334,7 +334,7 @@ const timeTaken = (f,...args) => {
Use `Array.reduce()` to create and combine key-value pairs. Use `Array.reduce()` to create and combine key-value pairs.
```js ```js
const objectFromPairs = arr => arr.reduce((a,b) => (a[b[0]] = b[1], a), {}); const objectFromPairs = arr => arr.reduce((a,v) => (a[v[0]] = v[1], a), {});
// objectFromPairs([['a',1],['b',2]]) -> {a: 1, b: 2} // objectFromPairs([['a',1],['b',2]]) -> {a: 1, b: 2}
``` ```
@ -447,8 +447,7 @@ const sortCharactersInString = str =>
Use `reduce()` to add each value to an accumulator, initialized with a value of `0`. Use `reduce()` to add each value to an accumulator, initialized with a value of `0`.
```js ```js
const sum = arr => const sum = arr => arr.reduce( (acc , val) => acc + val, 0);
arr.reduce( (acc , val) => acc + val, 0);
// sum([1,2,3,4]) -> 10 // sum([1,2,3,4]) -> 10
``` ```

4
snippets/initialize-array-with-values.md
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@ -1,9 +1,9 @@
### Initialize array with values ### Initialize array with values
Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values. Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values.
You can omit `v` to use a default value of `0`. You can omit `value` to use a default value of `0`.
```js ```js
const initializeArray = (n, v = 0) => Array(n).fill(v); const initializeArray = (n, value = 0) => Array(n).fill(value);
// initializeArray(5, 2) -> [2,2,2,2,2] // initializeArray(5, 2) -> [2,2,2,2,2]
``` ```

4
snippets/measure-time-taken-by-function.md
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@ -4,8 +4,8 @@ Use `performance.now()` to get start and end time for the function, `console.log
First argument is the function name, subsequent arguments are passed to the function. First argument is the function name, subsequent arguments are passed to the function.
```js ```js
const timeTaken = (f,...args) => { const timeTaken = (func,...args) => {
var t0 = performance.now(), r = f(...args); var t0 = performance.now(), r = func(...args);
console.log(performance.now() - t0); console.log(performance.now() - t0);
return r; return r;
} }

2
snippets/object-from-key-value-pairs.md
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@ -3,6 +3,6 @@
Use `Array.reduce()` to create and combine key-value pairs. Use `Array.reduce()` to create and combine key-value pairs.
```js ```js
const objectFromPairs = arr => arr.reduce((a,b) => (a[b[0]] = b[1], a), {}); const objectFromPairs = arr => arr.reduce((a,v) => (a[v[0]] = v[1], a), {});
// objectFromPairs([['a',1],['b',2]]) -> {a: 1, b: 2} // objectFromPairs([['a',1],['b',2]]) -> {a: 1, b: 2}
``` ```

3
snippets/sum-of-array-of-numbers.md
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@ -3,7 +3,6 @@
Use `reduce()` to add each value to an accumulator, initialized with a value of `0`. Use `reduce()` to add each value to an accumulator, initialized with a value of `0`.
```js ```js
const sum = arr => const sum = arr => arr.reduce( (acc , val) => acc + val, 0);
arr.reduce( (acc , val) => acc + val, 0);
// sum([1,2,3,4]) -> 10 // sum([1,2,3,4]) -> 10
``` ```