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NSLog の出力先を変更する

Last updated at Posted at 2012-12-26

NSLog は標準エラーに出力される。
C言語のfreopen関数を使うとstderrの出力先を変更することが出来るので、NSLog の出力も別の場所に変更(ファイル化)することができる。エラーを抑制するなりファイルに書き出すなり。

char *filePath = (char*)[@"/path/to/file.txt" UTF8String];
freopen(filePath, "a+", stderr);
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