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Building a string
Message
From
05/04/2010 15:11:51
 
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
VFP 9 SP2
Miscellaneous
Thread ID:
01458765
Message ID:
01458799
Views:
51
I see that - I ran a test with larger strings/more fields and indeed the disk file option starts to become a better contender than handling the large strings in memory. Thanks!


>Yes my suggestion is for a large string.
>
>>Sergey, I have done some tests. Your suggestion is much slower (17.2 sec) compared to building a string (0.75 sec) or using TEXTMERGE (0.8 sec). It would seem that for the file size I am using that building the string is a good option.
>>
>>UPDATE: I am using 10,000 records and combining 3 fields.
>>
>>
>>>It has been proven that writing to a file line by line could be faster than building string in a memory.
>>>I would try
>>>
>>>lcFileName = "..."
>>>ERASE(lcFileName) 
>>>SCAN 
>>>
>>>lcLine = myTable.Field1 + CHR(9) + myTable.Field2 + CHR(9) + CHR(13)
>>>
>>>STRTOFILE(lcLine , lcFileName, .T.)
>>>
>>>ENDSCAN
>>>cMyString = FILETOSTR(lcFileName)
>>>
>>>
>>>>I need to add extra formatting text between fields and dependent on field contents. So simple COPY will not work. Do you think using SET TEXTMERGE TO VARIABLE will be faster?
>>>>
In the End, we will remember not the words of our enemies, but the silence of our friends - Martin Luther King, Jr.
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