Pythonic

Python like utility functions for JavaScript: range, enumerate, items, zip and zipLongest.

These functions return an Iterator
instance similar to Python Iterators.
This Iterator implementation is lazy evaluated,
offers map,
filter,
reduce,
some,
every
and Symbol.asyncIterator
interfaces.

$3

``bash
npm install pythonic --save
`

$3

#### range

`javascript
import {range} from 'pythonic';

range(3).map(x => console.log(x + 1));
// 1
// 2
// 3

for (const i of range(10, 25, 5))
console.log(i);
// 10
// 15
// 20

console.log(range(5).reduce((accumulator, current) => accumulator + current));
// 10
`

#### enumerate

`javascript
import {enumerate} from 'pythonic';

const arr = ['a', 'b'];
for (const [index, value] of enumerate(arr))
console.log(index: ${index}, value: ${value});
// index: 0, value: a
// index: 1, value: b
`

#### zip | zipLongest

`javascript
import {zip, zipLongest} from 'pythonic';

const arr1 = ['a', 'b'];
const arr2 = ['c', 'd', 'e'];
for (const [first, second] of zip(arr1, arr2))
console.log(first: ${first}, second: ${second});
// first: a, second: c
// first: b, second: d

for (const [first, second] of zipLongest(arr1, arr2))
console.log(first: ${first}, second: ${second});
// first: a, second: c
// first: b, second: d
// first: undefined, second: e

// unzip
const [arrayFirst, arraySecond] = [...zip(...zip(arr1, arr2))];
`

#### items

`javascript
import {items} from 'pythonic';

const obj = {a: 'aa', b: 'bb'};
for (const [key, value] of items(obj))
console.log(key: ${key}, value: ${value});
// key: a, value: aa
// key: b, value: bb

const map = new Map([[1, 'one'], [2, 'two']]);
for (const [key, value] of items(map))
console.log(key: ${key}, value: ${value});
// key: 1, value: one
// key: 2, value: two
`

$3


`javascript
import {Iterator, range} from 'pythonic';

const randomIntegers = (size, start, stop) => new Iterator(function * () {
for (const _ of range(size))
yield Math.floor(Math.random() * (stop - start) + start);
});

const randomNumbers = randomIntegers(3, 10, 1000);

for (const randomNumber of randomNumbers)
console.log(randomNumber);
// 685
// 214
// 202

console.log(randomNumbers.some(value => value > 10));
// true
console.log(randomNumbers.every(value => value < 1000));
// true
``

$3

MIT