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20 lines
306 B
ObjectPascal
20 lines
306 B
ObjectPascal
{$mode objfpc} {$modeswitch typehelpers}
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type
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BoolHelper = type helper for boolean
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function ToChar: char;
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end;
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function BoolHelper.ToChar: char;
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begin
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result := pChar('-+')[ord(self)];
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end;
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var
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x: uint32;
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begin
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writeln((@x = @x).ToChar);
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if (@x = @x).ToChar<>'+' then
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halt(1);
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end.
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