delphi 检测是否包含字符
function CharInString (S: string; Ch: Char): Boolean;
var
I: Integer;
begin
Result := False;
for I := Low (S) to High (S) do
if (S[I]) = Ch then
begin
Result := True;
Exit;
end;
end;
function CharInString2 (S: string; Ch: Char): Boolean;
var
I: Integer;
begin
Result := False;
for I := Low (S) to High (S) do
if (S[I]) = Ch then
Exit (True);
end;
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