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...?

_________________________________________________________________

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 supplied 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 construction 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