Discussion page for [http://dev.crypt.co.za/incubator/doc/tcltm/control/functional-tip.wiki], a proposal for Higher Order Functions in Tcl that is intended to result in a TIP.

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''[escargo] 15 Apr 2010'' - There appears to be some damage to the page in the reference link.  One heading is
'''tr;dr'''.  Headings for "Introduction, Motivation and Goals," "A review of FP and higher order functions in Tcl,"
and "The design of this proposal" appear to be missing.

One feature of the design of the proposal is described like this:

`filter` ''predicate'' ''list'' is a filter over a list, and predicate is a cmdprefix that must return a boolean.

This is somewhat imprecise in that Tcl does not have a boolean data type. More firmly specified would be to say
that cmdprefix must return 0 or 1.

The discussion about optional arguments would be clarified if the distinction between formal arguments and
actual arguments were more clearly drawn.

While proponents of functional programming might know about ''left fold'' and ''right fold'' an explanatory
reference for the rest of us would be welcome.

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[Lars H]: While I certainly agree with the proposal's philosophy that a [command prefix] should be considered the normal Tcl equivalent of an abstract function, I'm somewhat at a loss as to what the [TIP] is supposed to actually propose. The whole thing just looks like a collection of observations.

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