Difference between revisions of "EVAL TEXT"

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|description=Evaluate any variables stored in a text variable and save the resulting text back to the variable.
 
|description=Evaluate any variables stored in a text variable and save the resulting text back to the variable.
 
:You need to use this command if you are building up a string variable using the same variable with different values.
 
:You need to use this command if you are building up a string variable using the same variable with different values.
 +
:Any variables used inside the contents of a string variable are only converted from numbers to text when the string variable
 +
:is used to write to a file, passed to another macro or displayed on a dialog.
  
 
|param1=<string variable>|param1_desc={{string variable}}
 
|param1=<string variable>|param1_desc={{string variable}}
Line 9: Line 11:
  
 
===Example===
 
===Example===
:i = 1
+
:i = 123
 
:a$ = "i = %i"
 
:a$ = "i = %i"
:i = 2
+
:i = 246
 
:a$ = a$ + " and now i = %i"
 
:a$ = a$ + " and now i = %i"
:Message a$  ( this will display the text "i = 2 and now i = 2"
+
:Message a$  ( this will display the text "i = 246 and now i = 246"
 
:<br>
 
:<br>
:i = 1
+
:i = 123
 
:a$ = "i = %i"
 
:a$ = "i = %i"
 
:EVAL_TEXT a$
 
:EVAL_TEXT a$
:i = 2
+
:i = 246
 
:a$ = a$ + " and now i = %i"
 
:a$ = a$ + " and now i = %i"
:Message a$  ( this will display the text "i = 1 and now i = 2"
+
:Message a$  ( this will display the text "i = 123 and now i = 246"
 
:<br>
 
:<br>
 
:For an example macro see [[Process_Data]]
 
:For an example macro see [[Process_Data]]
 
[[Category:Miscellaneous]]
 
[[Category:Miscellaneous]]

Revision as of 15:45, 18 August 2010

Up

Command

EVAL_TEXT <string variable>


Evaluate any variables stored in a text variable and save the resulting text back to the variable.

You need to use this command if you are building up a string variable using the same variable with different values.
Any variables used inside the contents of a string variable are only converted from numbers to text when the string variable
is used to write to a file, passed to another macro or displayed on a dialog.

Parameters

<string variable>
a string variable, for example a$

Example

i = 123
a$ = "i = %i"
i = 246
a$ = a$ + " and now i = %i"
Message a$ ( this will display the text "i = 246 and now i = 246"

i = 123
a$ = "i = %i"
EVAL_TEXT a$
i = 246
a$ = a$ + " and now i = %i"
Message a$ ( this will display the text "i = 123 and now i = 246"

For an example macro see Process_Data