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Constructor Parameter Method

Constructor Parameter Method

Constructor Method๋กœ Šค„Šค๋ฅผ ๋งŒ๋“ค๋•Œ, ธ๋ฆฌ๋กœ„˜ฒจค€ ŒŒ๋ผ๋ฉ”„ฐ๋“ค„ ƒˆ๋กญฒŒ ๋งŒ๋“ค–ด„ Šค„Šค๋กœ –ด๋–ปฒŒ ฐ–  ˜ค๋Š”ฐ€? ฐ€žฅ œ —ฐ•œ ๋ฐฉ๋ฒ•€ ฐฐ˜ ๋ณ€ˆ˜— ๋Œ€•ด setter๋“ค„ ๋งŒ๋“ค–ด ฃผ๋Š” ฒƒด๋‹ค. ฆ‰,
~cpp 
class Point
{
/* ... */
	void setX(int x) { /* ... */ }
	void setY(int y) { /* ... */ }
	static Point* makeFromXnY(int x, int y)
	{
		Point* pt = new Point;
		pt->setX(x);
		pt->setY(y);
		return pt;
	}
/* ... */
};
ด๋ ‡ฒŒ ๋˜๋Š”ฒƒด๋‹ค. •˜ง€๋งŒ ๋ณ€ˆ˜ฐ€ ๋งŽ•„งˆˆ˜๋ก setter๋“ค€ „† ๋Š˜–ด๋‚œ‹ค. ด๋Ÿด๋•Œ—๋Š” ๋ชจ๋“  ๋ณ€ˆ˜๋ฅผ •œ๋ฒˆ— set•ฃผ๋Š” •˜๋‚˜˜ ๋ฉ”†Œ๋“œ๋ฅผ ๋งŒ๋“ ‹ค. ธ๋ฆฌ   ‘‘‚ฌ๋ฅผ setœผ๋กœ ๋ช…๋ช…•ฃผ  ๋ณ€ˆ˜˜ ด๋ฆ„„ ๋”ธ๋ ค€๋‹ค.
~cpp 
class Point
{
/* ... */
	static Point* makeFromXnY(int x, int y)
	{
		Point* pt = new Point;
		pt->setXnY(x,y);
		return pt;
	}
	void setXnY(int x, int y) // smalltalk—„œ๋Š” setX:xNum y:yNumด๋ผ๋Š” ๋ฉ”„ง€๋ฅผ ‚ฌšฉ•œ‹ค.
	{
		this->x = x;
		this->y = y;
	}
/* ... */
};

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