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GeneralStonewall
Magician
Joined: 02 Feb 2004
Posts: 364
Location: USA
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 Posted: Tue Jul 06, 2010 6:08 am
Alternative methods of concatting a function name?
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In the following example, on the last line, is there any way to get rid of the %eval function? I do need to use the value of @prefix as part of the functions name.
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#var prefix "test"
#var testvar "variable"
#function testfunction "#return function"
#print @{%concat(@prefix, "var")}
#print %eval(@%concat(@prefix, "function()")) |
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shalimar
GURU
Joined: 04 Aug 2002
Posts: 4701
Location: Pensacola, FL, USA
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Posted: Tue Jul 06, 2010 7:35 am
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$test=%concat("@", @prefix, "function()")
#PRINT $test
Untested, but it seems sound to me |
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Discord: Shalimarwildcat |
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GeneralStonewall
Magician
Joined: 02 Feb 2004
Posts: 364
Location: USA
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Posted: Tue Jul 06, 2010 7:38 am
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Nope, that simply prints out '@testfunction()'
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shalimar
GURU
Joined: 04 Aug 2002
Posts: 4701
Location: Pensacola, FL, USA
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Posted: Tue Jul 06, 2010 7:46 am
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#EXEC {#PRINT @%concat(@prefix, "function()")}
#EXEC {#PRINT @@{prefix}function()} |
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Discord: Shalimarwildcat |
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GeneralStonewall
Magician
Joined: 02 Feb 2004
Posts: 364
Location: USA
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Posted: Tue Jul 06, 2010 8:21 am
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Hrm, that indeed works. Not sure that's any better than %eval, though.
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Rahab
Wizard
Joined: 22 Mar 2007
Posts: 2320
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Posted: Tue Jul 06, 2010 2:09 pm
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No, this is one of the few situations that you actually need to use %eval or #exec.
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Zugg
MASTER
Joined: 25 Sep 2000
Posts: 23379
Location: Colorado, USA
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Posted: Tue Jul 06, 2010 5:00 pm
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Yeah, no way to avoid some sort of %eval or exec in this case. Since CMUD can't know the name of the function at compile time, it needs %eval to get it at runtime.
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