-
-
Notifications
You must be signed in to change notification settings - Fork 68
Expand file tree
/
Copy path4-multiple.js
More file actions
27 lines (22 loc) · 822 Bytes
/
4-multiple.js
File metadata and controls
27 lines (22 loc) · 822 Bytes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
'use strict';
const compose = (...fns) => (x) => fns.reduceRight((v, f) => f(v), x);
const pipe = (...fns) => (x) => fns.reduce((v, f) => f(v), x);
// Usage
const upperFirst = (word) => word.charAt(0).toUpperCase() + word.slice(1);
const upperCapital = (s) => s.split(' ').map(upperFirst).join(' ');
const lower = (s) => s.toLowerCase();
const trim = (s) => s.trim();
const s = ' MARCUS AURELIUS ';
console.log(s);
console.log(`lower('${s}') = '${lower(s)}'`);
console.log(`upperCapital('${s}') = '${upperCapital(s)}'`);
{
console.log('Use compose');
const capitalize = compose(upperCapital, lower, trim);
console.log(`capitalize('${s}') = '${capitalize(s)}'`);
}
{
console.log('Use pipe');
const capitalize = pipe(trim, lower, upperCapital);
console.log(`capitalize('${s}') = '${capitalize(s)}'`);
}