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Why?
Message
From
11/01/1999 14:05:01
 
 
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Title:
Re: Why?
Miscellaneous
Thread ID:
00174204
Message ID:
00174741
Views:
34
>>They why is simple - the '.' delimiter in the property expression terminates the macro expansion before the property expression is seen. It's much the same reason you can't macro expand a field in the notation < tablealias >.< fieldname
>
>Ed,
>
>I'm jumping into this thread in the middle, so maybe I missed something, but you can in fact macro expand a field name in the notation you give above. You're right about the period terminating the expansion, of course, but the following works fine:
>
>
>local lcTableName, lcFieldName
>lcTableName = 'alfalist'
>lcFieldName = 'cName'
>?&lcTableName..&lcFieldName.    && trailing period is optional
>
And you could probably expand an object reference via &objectname..&propertyname, but again, why, when name expansion is faster and isn't delimiter-sensitive?

>
>>
>>>
>>>>>can I do this:
>>>>>
>>>>>this.cView = 'ViewName'
>>>>>lcView = this.cView
>>>>>
>>>>>REPLACE &lcView..FieldName WITH value
>>>>>
>>>>>and not this:
>>>>>
>>>>>REPLACE &this.cView..FieldName WITH value?
>>>>>
>>>>>
>>>>
>>>>Macro substitution doesn't work properly on properties. Why not:
>>>>
>>>>REPLACE (lcView + '.FieldName') WITH VALUE
>>>>
>>>>and
>>>>
>>>>REPLACE (this.cView + '.Fieldname') WITH VALUE
>>>>
>>>>which should always work...and is faster, too.
>>>>
>>>>>Thanks in advance.
EMail: EdR@edrauh.com
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