moy-fp/src/List/all.js

A functional programming library.

import curry from '../Function/curry'

/**
 * (a -> Boolean) -> [a] -> Boolean
 */
const all = curry(
  (pred, list) => {
    for(let item of list){
      if(!pred(item)){
        return false
      }
    }
    return true
  }
)

export default all