cispy

A callback run when a non-blocking alts operation completes. Th evalue that this function recieves is an object with two properties: the value that the alts operation completed with (either the value taken from the channel in a take operation, or true or false in a puts operation), along with the channel where the operation actually took place. This function need not return anything; any return value is ignored.

An error handling function. This is used to handle exceptions thrown in processes and transducers. The return value of an exception handler is typically put onto a channel; if the exception happened within a process, it will be put to that process's output channel, and if the exception happened in a transducer, it will be put to the channel to which the transducer is attached.

A callback run when a non-blocking channel operation completes. The value that this function receives is identical to what is returned by a blocking call: the value being taken from the channel for a take, or true or false depending on the channel status for a put. It need not return anything; any return value is ignored.

A function that transforms data and can be chained to other transducers. This is handled by separate libraries; the only involvement of this library is as a consumer of transducers. A transducer is stepped through each time a value is taken from a channel.

Transducers work by having step functions that are known via protocol, and it is these step functions that take the data to be transformed as arguments. The arguments to the transducers themselves are other transducers that are then composed into a single transducer, which is then returned. These values should not be a concern of a user of this library; just pass a transducer to chan and everything else will be handled.