q-promise-utils

Several utils for simpifying interaction with multiple async operations.

API

$3

Executes funcs in async manner one by one.
Arguments:
* funcs - functions to execute
* args (optional) - arguments to pass to each function

Example:

``js
var foo = function() {},
bar = function() {};

utils.sequence([foo, bar], 'some-string', 100500)
.then(function() {
// first executed foo('some-string', 100500),
// then bar('some-string', 100500),
// then arrives to this code block
});
`

$3

Serially applies callback to each item in items array in async manner

Example:

`js
var items = ['foo', 'bar'],
callback = function() {};

utils.seqMap(items, callback)
.then(function() {
//first runs callback with arg foo, then with arg bar, next arrives to this code block
});
`

##utils.waitForResults(promises)

Waits for all promises in array to be resolved or rejected.
Unlike Q.allSettled, rejects when any of the promises is rejected.
Unlike Q.all does not immediately rejects a promise on a first error and waits for other operations to complete.

Example:

`js
var delay = q.delay(100),
rejected = q.reject('whatever');

utils.waitForResults([rejected, delay])
.fail(function(reason) {
//arrives here after 100ms with reject reason whatever
});
``