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Function InStr
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Returns the position of the first occurrence of one string within another.
Native to VB5 and VB6 (actually to all versions of VB, even to all versions of BASIC, AFAIK).
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VBspeed's Declaration:
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InStr(sCheck, sMatch[, Start[, Compare]])
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VB's native Declaration:
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VB's InStr, of course, looks like this (with the optional Start parameter as the first argument, a weird setup if you ask me):
InStr([Start, ]sCheck, sMatch[, Compare])
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Arguments:
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sCheck | Required. String expression being searched.
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sMatch | Required. String expression being searched for.
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Start | Optional. Numeric expression that sets the starting position for each search. If omitted, search begins at the first character position (Start = 1).
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Compare | Optional. Numeric value indicating the kind of comparison to use when evaluating substrings. If omitted, a binary comparison is performed.
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Return Values:
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Typical cases:
InStr("abc", "a") => 1
InStr("abc", "b") => 2
Special cases:
sCheck is zero-length => 0
sMatch is zero-length => start
sMatch is not found => 0
Start > Len(sMatch) => 0
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Roll your own
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If you want to have a go at InStr yourself, use this function (VB5/6-compatible) to verify the correctness of your code.
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