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The \n escape sequence allows for shorter code by specifying the newline in the string literal, and for faster runtime by eliminating the text formatting operation. Also, the compiler can map the escape sequence to a character encoding system other than ASCII and thus make the code more portable.
Because the expression 0 will always evaluate to false, the code inside the if statement can never be executed, and dead-code elimination would remove it entirely from the optimized program. This technique is common in debugging to optionally activate blocks of code; using an optimizer with dead-code elimination eliminates the need for using a ...
In computer programming, a code smell is any characteristic in the source code of a program that possibly indicates a deeper problem. [1] [2] Determining what is and is not a code smell is subjective, and varies by language, developer, and development methodology.