マジックナンバー
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Meanings
1
In sports, the combination of wins by the leading team and losses by the trailing team that clinches a championship or playoff spot.
If we win today's game, the magic number will decrease by one.
2
In computing, a constant numerical or string value used to identify a file format or protocol; also used for unexplained numerical constants in code.
A magic number is placed at the beginning of this file.