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2017-12-27 08:38:42 +00:00
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@@ -17,6 +17,7 @@
* [`call`](#call)
* [`collectInto`](#collectinto)
* [`flip`](#flip)
* [`pipeFunctions`](#pipefunctions)
* [`promisify`](#promisify)
* [`spreadOver`](#spreadover)
@@ -121,6 +122,7 @@
* [`randomIntegerInRange`](#randomintegerinrange)
* [`randomNumberInRange`](#randomnumberinrange)
* [`round`](#round)
* [`sdbmHashAlgorithm`](#sdbmhashalgorithm)
* [`standardDeviation`](#standarddeviation)
### Media
@@ -167,6 +169,7 @@
* [`isNumber`](#isnumber)
* [`isString`](#isstring)
* [`isSymbol`](#issymbol)
* [`randomHexColor`](#randomhexcolor)
* [`RGBToHex`](#rgbtohex)
* [`timeTaken`](#timetaken)
* [`toDecimalMark`](#todecimalmark)
@@ -174,11 +177,6 @@
* [`UUIDGenerator`](#uuidgenerator)
* [`validateNumber`](#validatenumber)
### _Uncategorized_
* [`pipeFunctions`](#pipefunctions)
* [`randomHexColor`](#randomhexcolor)
* [`sdbmHashAlgorithm`](#sdbmhashalgorithm)
## Adapter
### call
@@ -238,6 +236,25 @@ Object.assign(b, a) // == b
[⬆ back to top](#table-of-contents)
### pipeFunctions
Performs left-to-right function composition.
Use `Array.reduce()` with the spread operator (`...`) to perform left-to-right function composition.
The first (leftmost) function can accept one or more arguments; the remaining functions must be unary.
```js
const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
/*
const add5 = x => x + 5
const multiply = (x, y) => x * y
const multiplyAndAdd5 = pipeFunctions(multiply, add5)
multiplyAndAdd5(5, 2) -> 15
*/
```
[⬆ back to top](#table-of-contents)
### promisify
Converts an asynchronous function to return a promise.
@@ -1696,6 +1713,25 @@ const round = (n, decimals=0) => Number(`${Math.round(`${n}e${decimals}`)}e-${de
[⬆ back to top](#table-of-contents)
### sdbmHashAlgorithm
This algorithm is a simple hash-algorithm that hashes it input string `s` into a whole number.
Use `split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
``` js
const sdbm = str => {
let arr = str.split('');
return arr.reduce((hashCode, currentVal) =>
hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode
,0)
}
// console.log(sdbm("name")) // -3521204949
// console.log(sdbm("age")) // 808122783
```
[⬆ back to top](#table-of-contents)
### standardDeviation
Returns the standard deviation of an array of numbers.
@@ -1794,12 +1830,12 @@ const cleanObj = (obj, keysToKeep = [], childIndicator) => {
} else if (!keysToKeep.includes(key)) {
delete obj[key];
}
})
 });
return obj;
}
/*
const testObj = {a: 1, b: 2, children: {a: 1, b: 2}}
cleanObj(testObj, ["a"],"children")
console.log(testObj)// { a: 1, children : { a: 1}}
cleanObj(testObj, ["a"],"children") // { a: 1, children : { a: 1}}
*/
```
@@ -2307,6 +2343,25 @@ const isSymbol = val => typeof val === 'symbol';
[⬆ back to top](#table-of-contents)
### randomHexColor
Generates a random hexadecimal color code.
Use `Math.random` to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using `toString(16)`.
```js
const randomHexColor = () => {
let n = (Math.random()*0xfffff|0).toString(16);
return '#' + (n.length !== 6
? (Math.random()*0xf|0).toString(16) + n : n);
}
// randomHexColorCode() -> "#e34155"
// randomHexColorCode() -> "#fd73a6"
// randomHexColorCode() -> "#4144c6"
```
[⬆ back to top](#table-of-contents)
### RGBToHex
Converts the values of RGB components to a color code.
@@ -2397,65 +2452,6 @@ const validateNumber = n => !isNaN(parseFloat(n)) && isFinite(n) && Number(n) ==
// validateNumber('10') -> true
```
[⬆ back to top](#table-of-contents)
## _Uncategorized_
### pipeFunctions
Performs left-to-right function composition.
Use `Array.reduce()` with the spread operator (`...`) to perform left-to-right function composition.
The first (leftmost) function can accept one or more arguments; the remaining functions must be unary.
```js
const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
/*
const add5 = x => x + 5
const multiply = (x, y) => x * y
const multiplyAndAdd5 = pipeFunctions(multiply, add5)
multiplyAndAdd5(5, 2) -> 15
*/
```
[⬆ back to top](#table-of-contents)
### randomHexColor
Generates a random hexadecimal color code.
Use `Math.random` to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using `toString(16)`.
```js
const randomHexColor = () => {
let n = (Math.random()*0xfffff|0).toString(16);
return '#' + (n.length !== 6
? (Math.random()*0xf|0).toString(16) + n : n);
}
// randomHexColorCode() -> "#e34155"
// randomHexColorCode() -> "#fd73a6"
// randomHexColorCode() -> "#4144c6"
```
[⬆ back to top](#table-of-contents)
### sdbmHashAlgorithm
This algorithm is a simple hash-algorithm that hashes it input string `s` into a whole number.
Use `split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
``` js
const sdbm = str => {
let arr = str.split('');
return arr.reduce((hashCode, currentVal) =>
hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode
,0)
}
// console.log(sdbm("name")) // -3521204949
// console.log(sdbm("age")) // 808122783
```
[⬆ back to top](#table-of-contents)
## Credits