Tutorial: String Variables 5

From GECK

This is the fifth article in a tutorial series on string variables.

Checking String Variables

With 'if eval' syntax, checking whether a string var is the same as another, or the same as a string, is as simple as:

if eval my_stringvar == "some string"
...
if eval my_stringvar1 == my_stringvar2
...

and you can use != too for inequality.

Before eval, you had to check the int value returned by the Sv_Compare function if you wanted to compare a string var to a string:

if 0 == sv_compare "some string" FormatSpecVars sv_stringvar bCaseSensitiveComparebool
   ; they are the same
elseif 1 == sv_compare "some string" FormatSpecVars sv_stringvar bCaseSensitiveComparebool
   ; the string var's string occurs before the string, alphabetically speaking
elseif -1 == sv_compare "some string" FormatSpecVars sv_stringvar bCaseSensitiveComparebool
   ; the string var's string occurs after the string, alphabetically speaking
elseif -2 == sv_compare "some string" FormatSpecVars sv_stringvar bCaseSensitiveComparebool
   ; none of the above, the compare 'fails'
endif

Not much point in using sv_compare, now that we have the "if eval" alternative, except if you're really interested in the alphabetical comparison. These comparisons are case-insensitive, unless you use that bool with sv_compare.


Tutorial part 6: Passing String Vars as parameters

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