[fpc-pascal] FPImage and GetDataLineStart
florian at freepascal.org
Fri Apr 22 13:35:43 CEST 2011
Am 22.04.2011 13:32, schrieb michael.vancanneyt at wisa.be:
> On Fri, 22 Apr 2011, Florian Klämpfl wrote:
>>> (I suspect this is why it is possible to add type restrictions in the
>>> Delphi/.Net implementations)
>>> 2. If I have my own overloaded version of '+' for a record, the above
>>> means that it
>>> cannot ever be used for generics, while it will be used for all my
>>> other code.
>>> Say I define a type, and decide not to put the operators inside the
>>> for whatever reason. I am happily unaware of generics. Along comes an
>>> afficiniado of generics, and wants to use my type in generics, but hits
>>> the above problem. He is stuck.
>> No. He can define a record helper operator.
> Which then simply repeats what I already had ? Very efficient :-)
Speedwise it makes no difference. The difference is to have simple rules
which symbols are defined during specialization.
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