Package Exports

pull-with-latest

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (pull-with-latest) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

pull with latest

Take two streams, and return a new stream that emits every value from the first stream with the most recent value from the other stream.

example

var withLatest = require('pull-with-latest')
var S = require('pull-stream')

var stream = S(
    S.values(['a','b','c']),
    S.asyncMap(function (ev, cb) {
        setTimeout(function () {
            cb(null, ev)
        }, 210)
    })
)

// this is twice as fast as `stream`, but only the most recent
// value gets sent to the sink
var other = S(
    S.values([1,2,3,4,5,6]),
    S.asyncMap(function (ev, cb) {
        setTimeout(function () {
            cb(null, ev)
        }, 100)
    })
)

S(
    withLatest(other, stream),
    S.log()
    //   ['a', 2],
    //   ['b', 4],
    //   ['c', 6]
)