Created
January 13, 2015 15:36
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Performance comparison between my repeatFunction and WorksheetFunction.Rept
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| ' << RESULT >> | |
| ' ? repeatString("abc", 10) | |
| ' abcabcabcabcabcabcabcabcabcabc | |
| ' | |
| ' My repeat() 0.2460938 | |
| ' WS.Rept() 1.547852 | |
| Function repeatString$(ByVal repeated$, ByVal count&) | |
| If count < 1 Then Exit Function | |
| Do While True | |
| If (count And 1) = 1 Then | |
| repeatString = repeatString & repeated | |
| count = count - 1 | |
| End If | |
| count = count / 2 | |
| If count = 0 Then Exit Function | |
| repeated = repeated & repeated | |
| Loop | |
| End Function | |
| Sub testRepeat() | |
| Dim s, e | |
| Dim i& | |
| s = Timer | |
| For i = 0 To 100000 | |
| repeatString "abcd", 1000 | |
| Next | |
| e = Timer | |
| Debug.Print "My repeat()", e - s | |
| s = Timer | |
| For i = 0 To 100000 | |
| WorksheetFunction.Rept "abcd", 1000 | |
| Next | |
| e = Timer | |
| Debug.Print "WS.Rept()", e - s | |
| End Sub |
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