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- Synopsis:
- switch (<control text>) { (<switch>) { <body> } }
-
- Description:
- SWITCH is similar to C's switch statement. It allows for multiple
- alternatives to a given "control" statement where more than two
- possible values exist. It is functionally similar to IF except it
- doesn't require excessive nesting for multiple alternatives.
-
- Whitespace is not significant any any part of SWITCH. Braces may
- appear anywhere, and multiple switches may appear on the same line
- or on individual lines. No logic takes place inside the switch, only
- string comparisons. For this reason, the expression parser is not
- needed (nor allowed), as everything is assumed to be a string, and
- variables are expanded.
-
- Examples:
- A simple switch that checks the value of an arbitrary input:
- switch ( $0 ) {
- ( foo ) {
- <do action for "foo">
- }
- ( bar ) ( blah ) {
- <do action for "bar" or "blah">
- }
- ( * ) {
- <do action for everything else>
- }
- }
-
- See Also:
- if(5); fe(5); fec(5)
-
- Restrictions:
- EPIC does not support a break-like mechanism, as one would find in C.
- This makes it impossible to implicitly simulate C's "fall-through"
- capability. FE is better suited to the task of matching multiple
- independent strings.
-
-