Lesson 15 — Standard Library

日本語

Syntax

use imports Purus's built-in standard library. Module names start with p-, and as gives them a short alias. Only the functions you actually use end up in the compiled JavaScript (tree-shaking):

use p-math as m
use p-array as arr
use p-string as s

m.floor[4.7]              -- 4
arr.first[[7, 8]]         -- 7
s.upper[//;purus;//]      -- "PURUS"

Available modules: p-math, p-array, p-string, p-random, p-datetime, p-json, p-object, p-number, p-error.

Task

1. Round 3.7 with m.round → 4

2. Find the largest of 3, 1, 4 with m.max (arguments separated by ;)

3. Sum [1, 2, 3] with arr.sum (note: the array is one argument — arr.sum[[1, 2, 3]])

Check

npm test 15

Learn more

• Modules — use
• p-math / p-array