lambda(3tcl)					     Utility commands for anonymous procedures					      lambda(3tcl)

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NAME

       lambda - Utility commands for anonymous procedures

SYNOPSIS

       package require Tcl  8.5

       package require lambda  ?1?

       ::lambda arguments body ?arg...?

       ::lambda@ namespace arguments body ?arg...?

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DESCRIPTION

       This  package  provides	two convenience commands to make the writing of anonymous procedures, i.e. lambdas more proc-like. Instead of, for
       example, to write

		   set f {::apply {{x} {
		      ....
		   }}}

       with its deep nesting of braces, or

		   set f [list ::apply {{x y} {
		      ....
		   }} $value_for_x]

       with a list command to insert some of the arguments of a partial application, just write

		   set f [lambda {x} {
		      ....
		   }]

       and

		   set f [lambda {x y} {
		      ....
		   } $value_for_x]

COMMANDS

       ::lambda arguments body ?arg...?
	      The command constructs an anonymous procedure from the list of arguments, body script and (optional) predefined argument values  and
	      returns a command prefix representing this anonymous procedure.

	      When  invoked  the  body is run in a new procedure scope just underneath the global scope, with the arguments set to the values sup-
	      plied at both construction and invokation time.

       ::lambda@ namespace arguments body ?arg...?
	      The command constructs an anonymous procedure from the namespace name, list of arguments,  body  script  and  (optional)	predefined
	      argument values and returns a command prefix representing this anonymous procedure.

	      When  invoked  the body is run in a new procedure scope in the namespace, with the arguments set to the values supplied at both con-
	      struction and invokation time.

AUTHORS

       Andreas Kupries

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the  category  lambda
       of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have for
       either package and/or documentation.

SEE ALSO

       apply(3tcl), proc(3tcl)

KEYWORDS

       anonymous procedure, callback, command prefix, currying, lambda, partial application, proc

CATEGORY

       Utility

COPYRIGHT

       Copyright (c) 2011 Andreas Kupries, BSD licensed

lambda									 1							      lambda(3tcl)