flip

Swap the only two arguments of a function

Usage

Return a new function that swaps the only two arguments of the original function. This is most useful for reversing the order of a “comparator” (i.e. a function used for sorting).

import * as 
import _
_ from 'radashi'

const 
const subtract: (a: number, b: number) => number
subtract = (
a: number
a: number, 
b: number
b: number) => 
a: number
a - 
b: number
b

const subtract: (a: number, b: number) => number
subtract(1, 2) // => -1
import _
_.
flip<[a: number, b: number], number>(fn: (a: number, b: number) => number): (args_0: number, args_1: number) => number
export flip
Flip the first two arguments of a function.
@see ― https://radashi.js.org/reference/curry/flip
@example 
const subtract = (x: number, y: number) => x - y

// Equivalent to “y - x”
const flippedSubtract = flip(subtract)

flippedSubtract(3, 4)
// => 1
@version ― 12.2.0
flip(
const subtract: (a: number, b: number) => number
subtract)(1, 2) // => 1

Note that functions with more than two arguments are not supported.