ForExpr

2011-04-20T10:07:12Z

203.92.44.228: /* Tests */

[[ForExpr]] is a [[nonkernel]] node which executes code for each element in a collection or other object implementing [[:Category:Message iterate/1|iterate/1]].

"for" (<var>optKeyPattern</var> "=>")? <var>valuePattern</var> "in" <var>collection</var> "{" <var>body</var> "}" ({<var>optBreakCatch</var> an EMatcher}: "catch" ''pattern'' "{" ''expr'' "}")?

{{XXX|We need to formalize the grammar definitions used in our spec}}

== Fields ==

* <var>optKeyPattern</var> :[[nullOk]]<nowiki>[</nowiki>[[Pattern]]]
* <var>valuePattern</var> :[[Pattern]]
* <var>collection</var> :[[nullOk]]<nowiki>[</nowiki>[[EExpr]]]
* <var>body</var> :[[EExpr]]
* <var>optBreakCatch</var> :[[nullOk]]<nowiki>[</nowiki>[[EMatcher]]]

== Expansion ==

{{XXX|Define the expansion of ForExpr}}

== Static constraints ==

* <var>collection</var> may not use nouns bound by <var>optKeyPattern</var> or <var>valuePattern</var>, or vice versa.

C9KOXf Got it! Thanks a lot again for hlepnig me out!

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ForExpr