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Author Topic: TFPGMap sort on data  (Read 370 times)

apeoperaio

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TFPGMap sort on data
« on: February 06, 2023, 06:05:17 pm »
How can I sort a TFPGMap on data instead of on keys?
How should I use OnDataCompare and Sort?

Thanks.
Andrea
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Thaddy

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Re: TFPGMap sort on data
« Reply #1 on: February 06, 2023, 06:56:31 pm »
Sorting on data is useless. Be more specific.
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marcov

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Re: TFPGMap sort on data
« Reply #2 on: February 06, 2023, 08:59:53 pm »
If you need data sorted on multiple keys, use multiple maps and define some procedure/methods that check them both for removal/addition.
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apeoperaio

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Re: TFPGMap sort on data
« Reply #3 on: February 06, 2023, 09:04:02 pm »
@Thaddy, I am using TFPGMap as a dictionary <integer, integer> and I need to sort by Data and not by Key. Why should be useless?

Should I use a different class? Why the method OnDataCompare is available if it is considered useless?
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marcov

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Re: TFPGMap sort on data
« Reply #4 on: February 06, 2023, 09:16:57 pm »
fpSmap seems to have an indexdata method. That seems the only place it is used, but it is an iteration, not a map.
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