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GeneralRe: Converting Alphabet to corresponding number Pin
Rob Philpott16-Feb-15 10:28
Rob Philpott16-Feb-15 10:28 
GeneralRe: Converting Alphabet to corresponding number Pin
Wastedtalent19-Feb-15 5:55
professionalWastedtalent19-Feb-15 5:55 
AnswerRe: Converting Alphabet to corresponding number Pin
PIEBALDconsult16-Feb-15 6:47
mvePIEBALDconsult16-Feb-15 6:47 
GeneralRe: Converting Alphabet to corresponding number Pin
Tetra104416-Feb-15 7:12
Tetra104416-Feb-15 7:12 
AnswerRe: Converting Alphabet to corresponding number Pin
BillWoodruff16-Feb-15 13:59
professionalBillWoodruff16-Feb-15 13:59 
GeneralRe: Converting Alphabet to corresponding number Pin
Rob Philpott17-Feb-15 0:21
Rob Philpott17-Feb-15 0:21 
QuestionWhy is Array.Sort() slower if I use my own comparer? Pin
robinsc16-Feb-15 2:09
robinsc16-Feb-15 2:09 
AnswerRe: Why is Array.Sort() slower if I use my own comparer? Pin
Rob Philpott16-Feb-15 3:06
Rob Philpott16-Feb-15 3:06 
Interesting question. I've taken your code and come to the same findings.

My suspicion is that because you are using a primitive type 'long' as the thing to sort, .NET has its own optimized method of sorting these effectively bypassing the whole IComparer/IComparable mechanism as a specific performance tuned operation.

What I mean by that is that it knows what a long is, so when sorting without a comparer specified it can use a dedicated long sort rather than something that repeatedly calls IComparer.Equals.

In your example, it gets called around about 300 million times...
Regards,
Rob Philpott.

GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
robinsc16-Feb-15 3:20
robinsc16-Feb-15 3:20 
GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
Rob Philpott16-Feb-15 3:26
Rob Philpott16-Feb-15 3:26 
GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
robinsc16-Feb-15 3:35
robinsc16-Feb-15 3:35 
SuggestionRe: Why is Array.Sort() slower if I use my own comparer? Pin
Richard Deeming16-Feb-15 9:20
mveRichard Deeming16-Feb-15 9:20 
GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
Rob Philpott16-Feb-15 9:22
Rob Philpott16-Feb-15 9:22 
GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
robinsc16-Feb-15 22:57
robinsc16-Feb-15 22:57 
AnswerRe: Why is Array.Sort() slower if I use my own comparer? Pin
Dave Kreskowiak16-Feb-15 3:56
mveDave Kreskowiak16-Feb-15 3:56 
GeneralRe: Why is Array.Sort() slower if I use my own comparer? Pin
robinsc16-Feb-15 4:23
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QuestionConsuming SAP Web Service in C# Pin
Amoxtli15-Feb-15 23:40
Amoxtli15-Feb-15 23:40 
GeneralRe: Consuming SAP Web Service in C# Pin
Richard MacCutchan16-Feb-15 0:05
mveRichard MacCutchan16-Feb-15 0:05 
GeneralRe: Consuming SAP Web Service in C# Pin
Amoxtli16-Feb-15 0:18
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GeneralRe: Consuming SAP Web Service in C# Pin
Richard MacCutchan16-Feb-15 0:35
mveRichard MacCutchan16-Feb-15 0:35 
GeneralRe: Consuming SAP Web Service in C# Pin
Amoxtli16-Feb-15 0:41
Amoxtli16-Feb-15 0:41 
GeneralRe: Consuming SAP Web Service in C# Pin
Amoxtli16-Feb-15 2:18
Amoxtli16-Feb-15 2:18 
GeneralRe: Consuming SAP Web Service in C# Pin
Richard MacCutchan16-Feb-15 2:20
mveRichard MacCutchan16-Feb-15 2:20 
GeneralRe: Consuming SAP Web Service in C# Pin
Amoxtli16-Feb-15 2:25
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QuestionCan PdfFileWriter Support Chinese? Pin
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