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#133391 - 2005-02-05 04:39 PM SetOption('CaseSensitivity','on')
Les Les KiX Master Registered: 2001-06-11 Posts: 12734 Loc: fortfrances.on.ca	I don't see much use of SetOption('CaseSensitivity','on') but I sometimes see strings converted with UCase(). Now we know that KiX by default, is case insensitive and that it can be made case sensitive either with SetOption('CaseSensitivity','on') or by doubling up == on compares. The question that begs to be asked is what would be considered "best practice"? If using string compares in a UDF, do you assume that 'CaseSensitivity' is 'off'; do you save/set/restore the SetOption; or do you convert all strings used in compares with UCase() or LCase()? We know that other SetOption()s like 'Explicit' and 'NoVarsInStrings' can either break UDFs or if used carelessly in the UDF, cause calling scripts to fail. I know that if we add this to the list, the UDF "Standards Police" may have a hayday pestering contributors but still, it deserves a mention. _________________________ Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.
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#133392 - 2005-02-05 06:35 PM Re: SetOption('CaseSensitivity','on')
Sealeopard Sealeopard KiX Master Registered: 2001-04-25 Posts: 11165 Loc: Boston, MA, USA	As case sensitivity of off by default, I'd keep that as a standard. If case sensitivity is required for e.g. string comparisons, then either use '==' or switch it on temporarily. While NoVarsInStrings and Explicit have usage with regards to the cleanliness of coding in general, CaseSensitivity is more "esoteric" as it applies to just a specific situation of string comparisons. _________________________ There are two types of vessels, submarines and targets.
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#133393 - 2005-02-07 09:53 AM Re: SetOption('CaseSensitivity','on')
Richard H. Richard H. Administrator Registered: 2000-01-24 Posts: 4946 Loc: Leatherhead, Surrey, UK	I think generally the guideline should be something like: Submitted UDFs may be written to assume that case sensitivity is "OFF" and need not advertise this as a requirement. Submitted UDFs which require case sensitivity to be "ON" may change the setting within the UDF, but only if the setting is guaranteed to revert to it's previous state on exit in all cases. Use of the case sensitive operator "==" to explicitly mark case sensitive comparisons is encouraged. Having case sensitivity "ON" is such an unusual state that I think it is reasonable to require "ON" scripts to reset the state before calling UDFs where the coder wants the UDF to behave as case insensitive.
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#133394 - 2005-02-08 05:17 PM Re: SetOption('CaseSensitivity','on')
masken masken MM club member Registered: 2000-11-27 Posts: 1222 Loc: Gothenburg, Sweden	I think case sensitivity brings ALOT of learning steps and unnessesary complexity to KiX. Part of KiX's magic is it's easyness and low learing threshold, and therefore I think that case sensitivity should be banned unless absolutely necessary... _________________________ The tart is out there
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#133395 - 2005-02-08 06:19 PM Re: SetOption('CaseSensitivity','on')
Les Les KiX Master Registered: 2001-06-11 Posts: 12734 Loc: fortfrances.on.ca	I never did understand why Ruud put it in there. Especially when it is so easy to use the case sensitive operator "==" but then maybe I am just myopic and it has further reaching implications with functions like AScan(). _________________________ Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.
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#133396 - 2005-02-09 05:50 AM Re: SetOption('CaseSensitivity','on')
Sealeopard Sealeopard KiX Master Registered: 2001-04-25 Posts: 11165 Loc: Boston, MA, USA	The problem starts when you have to evaluate expressions like Code: IF 'AA'<'aa' ENDIF e.g. as part of a sorting routine. Without case sesitivity, this would not evaluate to TRUE. _________________________ There are two types of vessels, submarines and targets.
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#133397 - 2005-02-09 09:23 AM Re: SetOption('CaseSensitivity','on')
Richard H. Richard H. Administrator Registered: 2000-01-24 Posts: 4946 Loc: Leatherhead, Surrey, UK	Yup. Also applies to things like InStr().
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#133398 - 2005-02-09 03:31 PM Re: SetOption('CaseSensitivity','on')
Les Les KiX Master Registered: 2001-06-11 Posts: 12734 Loc: fortfrances.on.ca	I knew I was putting my foot in my mouth and am looking for a way to extract it now. This then leads back to my first question about "best practice". Do we convert case with LCase()/UCase() to be safe, save/set/restore CaseSensitivity, warn users that we ignore it, or just turn a blind eye to it? _________________________ Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.
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#133399 - 2005-02-10 09:28 AM Re: SetOption('CaseSensitivity','on')
Richard H. Richard H. Administrator Registered: 2000-01-24 Posts: 4946 Loc: Leatherhead, Surrey, UK	Quote: This then leads back to my first question about "best practice". Do we convert case with LCase()/UCase() to be safe, save/set/restore CaseSensitivity, warn users that we ignore it, or just turn a blind eye to it? I refer m'learned friend to my first reply, post#3, which preserves the status quo.
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