Pylists NPM | npm.io

Py Lists

Python list comprehension

Installation

npm i pylists

Usage

Make Python list сomprehension in JavaScript with JavaScript features!!! or it can be deffered array, see more in examples:
Params: new listComprehension(string, array)for use with real arrays or new listComprehension(string)
Example
const ListComprehension = require('pylists');
const list1 = new ListComprehension("[x*2 for x in [1, 2, 3, 4, 5, 6]]").exec();
console.log(list1);
// list1 = [ 2, 4, 6, 8, 10, 12 ]

const list2 = new ListComprehension("x % 2 for x in myList if x === 2", 0, 1, 2, 3).exec(); console.log(list2); // list2 = 0

const list3 = new ListComprehension("[x.c.value.f * 2 for x in {c: {value: {f: 2}}}, {c: {value: 'ac'}}, {c: {value: 'abc3245'}} if x.c.value.f === 2]").exec(); console.log(list3); // list3 = 4

const list4 = new ListComprehension("x for x in list", 'abc', 'def', 'ghi', 'iasdfbcabc'.map(function (a) { return 'abc' + a + 'abc'; })).exec(); console.log(list4); // list4 = 'abcabcabc', 'abcdefabc', 'abcghiabc', 'abciasdfbcabcabc'

const freezedListComprehension = new ListComprehension('x for x in myList', 0, 1, 2, 3);

freezedListComprehension.add(5); freezedListComprehension.add(...4, 6, 8);

//Added AND condition (x !== 4 && x !== 3 && x !== 2) freezedListComprehension.addAndCondition("x !== 4"); freezedListComprehension.addAndCondition("x !== 3"); freezedListComprehension.addAndCondition("x !== 2");

//Added OR condition (x !== 4 && x !== 3 && x !== 2 || x == 5) freezedListComprehension.addOrCondition("x == 5");

const list5 = freezedListComprehension.exec(); console.log(list5); // list5 = 0, 1, 5, 6, 8