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utils.pair.pas
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94 lines (79 loc) · 3.47 KB
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(******************************************************************************)
(* PascalUtils *)
(* delphi and object pascal library of utils data structures *)
(* *)
(* Copyright (c) 2020 Ivan Semenkov *)
(* https://github.com/isemenkov/pascalutils ivan@semenkov.pro *)
(* Ukraine *)
(******************************************************************************)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"), *)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included in *)
(* all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(******************************************************************************)
unit utils.pair;
{$IFDEF FPC}
{$mode objfpc}{$H+}
{$ENDIF}
{$IFOPT D+}
{$DEFINE DEBUG}
{$ENDIF}
interface
uses
SysUtils;
type
{ Contains pair of values like in C++ language. }
{$IFDEF FPC}generic{$ENDIF} TPair<T1, T2> = class
public
type
TSelfPair = {$IFDEF FPC}specialize{$ENDIF} TPair<T1, T2>;
protected
FFirst : T1;
FSecond : T2;
public
{ Create pair with default values of T1 and T2 }
constructor Create; overload;
{ Create pair with defined values. }
constructor Create (AFirst : T1; ASecond : T2); overload;
{ Create pair from exiting pair. }
constructor Create (APair : TSelfPair); overload;
{ Pair first value. }
property First : T1 read FFirst write FFirst;
{ Pair second value. }
property Second : T2 read FSecond write FSecond;
end;
implementation
{ TPair generic }
constructor TPair{$IFNDEF FPC}<T1, T2>{$ENDIF}.Create;
begin
FFirst := Default(T1);
FSecond := Default(T2);
inherited Create;
end;
constructor TPair{$IFNDEF FPC}<T1, T2>{$ENDIF}.Create (AFirst : T1; ASecond :
T2);
begin
FFirst := AFirst;
FSecond := ASecond;
end;
constructor TPair{$IFNDEF FPC}<T1, T2>{$ENDIF}.Create (APair : TSelfPair);
begin
FFirst := APair.First;
FSecond := APair.Second;
end;
end.