Documentation can be found at http://tcllib.sourceforge.net/doc/queue.html .
This module of the tcllib data structures collection provides the data structure portion of a queue.
See Stacks and Queues for a description about what a queue is.
SEH 10 Dec 04 -- I have found out to my regret that it is not really possible to use [queue] in loop structures, because the "peek" and "get" commands acts differently when the queue size is 1 than when it is any number > 1.
It would be nice to be able to do something like:
foreach item [$queue peek [$queue size]] {<do stuff>}but if [$queue size] is 1, then the value is returned as a string value, whereas if it's 2, the values are returned as a list. So you can't use the above construction unless you know all queue values will look the same as strings or lists. For example:
%set q [struct::queue]
%$q put "a b"
%foreach item [$q peek [$q size]] {puts $item}
a
b
%$q put "c d"
%foreach item [$q peek [$q size]] {puts $item}
a b
c dThis behavior is documented and hence not actually a bug, but as a practical matter it makes the [queue] structure useless to me.
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