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64 lines
1.7 KiB
Plaintext
64 lines
1.7 KiB
Plaintext
[[LSET]] left-justifies a fixed length string expression based on the size of the [[STRING]] variable and string expression.
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{{PageSyntax}}
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: [[LSET]] {stringVariable = stringExpression | stringExpression1 = stringExpression2}
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{{PageDescription}}
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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]].
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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]] or [[TYPE]] definition to set the buffer position before a [[PUT]].
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{{PageExamples}}
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''Example 1:'' Using LSET with a [[FIELD]] definition. Note: May create an empty (unchanged) file that can be deleted.
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{{CodeStart}}
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'' ''
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{{Cl|OPEN}} "testfile.dat" FOR {{Cl|RANDOM}} AS #1 {{Cl|LEN}} = 15
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{{Cl|FIELD}} 1, 6 {{Cl|AS}} a$, 9 {{Cl|AS}} other$
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{{Cl|FIELD}} 1, 2 {{Cl|AS}} b$, 13 {{Cl|AS}} another$
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{{Cl|LSET}} a$ = "1234567890"
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{{Cl|LSET}} other$ = "1234567890"
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{{Cl|PRINT}} a$, b$, other$, another$
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{{Cl|CLOSE}} #1
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{{CodeEnd}}
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{{OutputStart}}
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123456 12 123456789 3456123456789
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{{OutputEnd}}
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''Example 2:'' How LSET can define two different string length values in one statement.
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{{CodeStart}}
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{{Cl|TYPE}} ninestring
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head {{Cl|AS}} {{Cl|STRING}} * 9
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{{Cl|END TYPE}}
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{{Cl|TYPE}} fivestring
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head AS {{Cl|STRING}} * 5
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{{Cl|END TYPE}}
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{{Cl|DIM}} me {{Cl|AS}} ninestring, you {{Cl|AS}} fivestring
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me.head = "ACHES NOT"
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{{Cl|CLS}}
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{{Cl|LSET}} you.head = me.head
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{{Cl|PRINT}} "me.head: "; me.head
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{{Cl|PRINT}} "you.head: "; you.head
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{{CodeEnd}}
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{{OutputStart}}
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me.head: ACHES NOT
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you.head: ACHES
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{{OutputEnd}}
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{{PageSeeAlso}}
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* [[RSET]], [[RTRIM$]]
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* [[FIELD]], [[TYPE]]
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{{PageNavigation}}
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<
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