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POoverload operator and conversion type
 

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    <p>i have a problem about conversion of type using overload of operator, here i have an full example code:</p> <pre><code>program OVerloads; {$APPTYPE CONSOLE} {$R *.res} uses System.SysUtils; type TMyRange = record private type TMyRangeEnum = 1 .. 90; var FMyRangeEnum: TMyRangeEnum; public class operator Implicit(const Value: Integer): TMyRange; class operator Implicit(const Value: TMyRange): Integer; class operator Explicit(const Value: Integer): TMyRange; class operator Explicit(const Value: TMyRange): Integer; end; class operator TMyRange.Implicit(const Value: Integer): TMyRange; begin Result.FMyRangeEnum := Value; end; class operator TMyRange.Implicit(const Value: TMyRange): Integer; begin Result := Value.FMyRangeEnum; end; class operator TMyRange.Explicit(const Value: Integer): TMyRange; begin Result.FMyRangeEnum := Value; end; class operator TMyRange.Explicit(const Value: TMyRange): Integer; begin Result := Value.FMyRangeEnum; end; var MyValue: TMyRange; MyVar: TMyRange; // (or Integer, not change nothing) MyArr: array[1..90] of TMyRange; // (or Integer, not change nothing) begin try { TODO -oUser -cConsole Main : Insert code here } MyValue := 90; Writeln(MyValue); // [1] Not work, error: E2054 Illegal in Write/Writeln statement Writeln(Integer(MyValue)); // Work MyVar := MyArr[MyValue]; // Not work, error: E2010 Incompatible types: 'Integer' and 'TMyRange' MyVar := MyArr[Integer(MyValue)]; // work except on E: Exception do Writeln(E.ClassName, ': ', E.Message); end; Readln; end. </code></pre> <p>Probably i have forgotten something, but as i can solve problem [1] in mnode that not need explicit all time Integer(myValue) ? Thanks again, very much.</p>
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    1. COSee this answer [implicit-cast-for-overloaded-record-in-delphi-as-a-parameter-in-a-const-array](http://stackoverflow.com/a/7287855/576719) about why this is happening.
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    2. COok thanks :) in this case i have used the explicit conversion too Maybe me not understood well? In general i understood becouse it, but wanted to try to understand better if can solve writing: writeln(MyValue) to place of: writeln(integer(MyValue) or: MyVar := MyArr[MyValue] to place of: MyVar := MyArr[integer(MyValue)]; in general it not big problem of course; but in a procedure/function look much Integer(MyValue) i don't know, i have impression that not correct, that there is a better solution. Just it.
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