Package Exports
- pull-scan
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-scan) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
pull scan 
Scan algorithm for pull streams. It's like reduce, but emits intermediate values. So it's more like map but with an accumulator argument.
example
var test = require('tape')
var S = require('pull-stream')
var scan = require('../')
test('works given initial state', function (t) {
t.plan(1)
S(
S.values([1,2,3]),
scan(function (acc, n) {
return acc + n
}, 10),
S.collect(function (err, data) {
t.deepEqual(data, [11,13,16], 'should use init state argument')
})
)
})
test('use default init state', function (t) {
t.plan(1)
S(
S.values([1,2,3]),
scan(function (acc, n) {
return acc + n
}),
S.collect(function (err, data) {
t.deepEqual(data, [1,3,6],
'should use first val as default state')
})
)
})