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69 lines
1.5 KiB
Markdown
69 lines
1.5 KiB
Markdown
[LSET](LSET) left-justifies a fixed length string expression based on the size of the [STRING](STRING) variable and string expression.
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## Syntax
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> [LSET](LSET) {stringVariable = stringExpression | stringExpression1 = stringExpression2}
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## Description
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* If the string expression is longer than a fixed length string variable the value is truncated from the right side in LSET or [RSET](RSET).
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* If the LSET string expression is smaller, spaces will occupy the extra positions to the right in the string.
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* LSET can be used with a [FIELD](FIELD) or [TYPE](TYPE) definition to set the buffer position before a [PUT](PUT).
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## Example(s)
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Using LSET with a [FIELD](FIELD) definition. Note: May create an empty (unchanged) file that can be deleted.
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```vb
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OPEN "testfile.dat" FOR RANDOM AS #1 LEN = 15
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FIELD 1, 6 AS a$, 9 AS other$
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FIELD 1, 2 AS b$, 13 AS another$
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LSET a$ = "1234567890"
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LSET other$ = "1234567890"
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PRINT a$, b$, other$, another$
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CLOSE #1
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```
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```text
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123456 12 123456789 3456123456789
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```
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How LSET can define two different string length values in one statement.
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```vb
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TYPE ninestring
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head AS STRING * 9
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END TYPE
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TYPE fivestring
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head AS STRING * 5
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END TYPE
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DIM me AS ninestring, you AS fivestring
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me.head = "ACHES NOT"
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CLS
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LSET you.head = me.head
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PRINT "me.head: "; me.head
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PRINT "you.head: "; you.head
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```
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```text
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me.head: ACHES NOT
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you.head: ACHES
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```
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## See Also
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* [RSET](RSET), [RTRIM$](RTRIM$)
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* [FIELD](FIELD), [TYPE](TYPE)
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