[fpc-devel] Some questions and proposals about cpstring

[Hans-Peter Diettrich]

Alex Shishkin schrieb:
> 12.10.2011 16:34, Hans-Peter Diettrich пишет:
>> Alex Shishkin schrieb:
>>> 1) Why UTF8String made incompatible with AnsiString(CP_UTF8)
>>> ( UTF8String = type AnsiString(CP_UTF8); )? Why not an alias?
>>
>> An alias allows to assign strings of *any* encoding, with possibly fatal
>> consequences. A strict UTF8String type allows for implicit conversion,
>> whenever required, so that such a string can contain nothing but UTF-8
>> encoded characters.
> So if I declare "MyString : AnsiString(CP_UTF8)" and assign win1251 
> encoded string to it no conversion will be made? It`s strange.

Delphi doesn't allow for such syntax. You'll have to write
   type TMyString = type AnsiString(CP_UTF8); // = UTF8String
   var  MyString: TMyString;
Then all assignments to MyString are converted into UTF-8.

DoDi