chan - Manipulate channels
http://purl.org/tcl/home/man/tcl8.5/TclCmd/chan.htm
chan option ?arg arg ...?
This command (introduced in Tcl 8.5) provides several operations on a channel, including many that have been available using a mix of other commands. Option indicates what to do with the channel. Any unique abbreviation for option is acceptable. The valid options are: (see complete man page; here's only notes on selected options).
Why was thing thing called 'chan' instead of 'channel'? schlenk: It's mentioned in the TIP [L1 ], basically same style as interp for interpreter.
I see. Thank you for pointing that out. Pretty lame reasoning when "channel" is much more descriptive. But I'm not the one doing all the work so I'm not complaining!
JYL If you dont like chan you can do 'interp alias {} channel {} chan'
AMG: chan aggregates all the commands you'll need for working with chan blocked channelId
chan close channelId
chan configure channelId ?optionName? ?value? ?optionName value?...
chan copy inputChan outputChan ?options...?
chan create mode cmdPrefix
chan eof channelId
chan event channelId event ?script?
chan flush channelId
chan gets channelId ?varName?
chan names ?globPattern?
chan postevent channelId eventSpec
chan puts ?-nonewline? ?channelId? string
chan read channelId ?numChars?
chan read ?-nonewline? channelId
chan seek channelId offset ?origin?
chan tell channelId
chan truncate channelId ?length?
TIP 287 proposes a [chan available channelId] command to find out how much available input is currently being buffered that could be chan read in. (It would make it safe to use chan gets with sockets since you could introspect and detect someone sending an excessively long line rather than running out of memory first.)
See also chan mode for an example how to extend that ensemble.
[ Category Command of Tcl 8.5 | Category Channel ]