LAMBDA(3TCL) - Linux man page online | Library functions
Utility commands for anonymous procedures.
Chapter
1
lambda(3tcl) Utility commands for anonymous procedures lambda(3tcl)
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NAME
lambda - Utility commands for anonymous proceduresSYNOPSIS
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 proce‐ dures, 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 rep‐ resenting 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 com‐ mand 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 prob‐ lems. Please report such in the category lambda of the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist]. Please also report any ideas for enhancements you may have for either package and/or documentation. When proposing code changes, please provide unified diffs, i.e the output of diff -u. Note further that attachments are strongly preferred over inlined patches. Attachments can be made by going to the Edit form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar.SEE ALSO
apply(3tcl), proc(3tcl)KEYWORDS
anonymous procedure, callback, command prefix, currying, lambda, partial application, procCATEGORY
UtilityCOPYRIGHT
Copyright (c) 2011 Andreas Kupries, BSD licensed| This manual | Reference | Other manuals |
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| lambda(3tcl) | referred by | |
| refer to | apply(3tcl) | proc(3tcl) |