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Newcomers DBPro Corner / Declaring a variable as constant

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schoenhs
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Joined: 29th Nov 2003
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Posted: 26th Dec 2003 12:37
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hey im sure that there must be a really easy way to do this, i just havnt figured it out yet, please help
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ReD_eYe
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Joined: 9th Mar 2003
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Posted: 26th Dec 2003 14:27
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in dbp its:
#constant <variable>
i not usre if dbc can do them though


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schoenhs
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Posted: 26th Dec 2003 14:37
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ok thanks but i have two questions, firstly i assume that when i use the #constant flag the variables are global right and secondly i have one constant that i declare like this,
#constant Preferences$ = "Preferences.dat"
but it gives me the error that i can only use alphanumeric charicters... what is wrong with this?
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ReD_eYe
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Posted: 26th Dec 2003 14:42
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yup i think they are global, i get the same error as you for that line as well,
#constant Preferences as string = "Pref.dat"
that however does work


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schoenhs
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Posted: 26th Dec 2003 14:55
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ahh rite thanks for all the help btw when i try to use it like
if file exist(Preferences)
it gives me the error of
"could not determine parameter type of 'as string' at line 43"

sorry for all of the trouble
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the_winch
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Joined: 1st Feb 2003
Location: Oxford, UK
Posted: 26th Dec 2003 18:24
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Use #constant Preferences = "Pref.dat"

#constants in dbpro arn't actual constants, they are more like macros in c.
eg.


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schoenhs
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Posted: 26th Dec 2003 19:11
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ahhh alrite thanks alot this works perfectly
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