awaitNext

<code>awaitNext</code> can be used within an async or stream coroutine.
When reached, <code>awaitNext</code> will register to receive the next element
from an async or a coroutine object.

Write sequential-looking code that pauses and resumes.
gen() creates a generator, an iterator that returns a
value and pauses each time it reaches a yield() call.
async() creates a promise, which runs until it reaches
a call to await(), then resumes when information is available.
These work similarly to generator and async constructs
from 'Python' or 'JavaScript'. Objects produced are
compatible with the 'iterators' and 'promises' packages.
Version 0.3 supports on.exit, single-step debugging,
stream() for making asynchronous iterators, and
delimited goto() in switch() calls.

Peter Meilstrup

async

Coroutines: Generators / Yield, Async / Await, and Streams

awaitNext function

<dl><dt>strm</dt>
<dd>A channel or stream object.</dd>
<dt>or</dt>
<dd>This argument will be evaluated and returned in the case
the channel closes. If not specified, awaiting on a closed stream
will raise an error with message "StopIteration".</dd>
<dt>err</dt>
<dd>A function to be called if the channel throws an error
condition.</dd></dl>

Arguments

Wait for the next value from a channel or stream. — awaitNext

<dl>

<dt>strm</dt>
<dd>A channel or stream object.</dd>


<dt>or</dt>
<dd>This argument will be evaluated and returned in the case
the channel closes. If not specified, awaiting on a closed stream
will raise an error with message "StopIteration".</dd>


<dt>err</dt>
<dd>A function to be called if the channel throws an error
condition.</dd>

</dl>

awaitNext: Wait for the next value from a channel or stream.

Description

Usage

Value

Arguments