Is ternary operator faster than if?
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Ternary is faster then if/else as long as no additional computation is required to convert the logic to us ternary. When it is a simply ternary operation, it has better readability as well. If only statement is faster than if/else, so if the logic doesn't require an else statement, do use it.
Thereof, is else if faster than if?
In general, "else if" style can be faster because in the series of ifs, every condition is checked one after the other; in an "else if" chain, once one condition is matched, the rest are bypassed.
Similarly, is ternary operator bad practice?
Ternary operators are not “bad”. They simply are. They very easily allow for very sloppy and difficult to maintain code. Very sloppy and difficult to maintain code is bad.
Conclusion. Use ternary operators to set a value to a variable, or to reduce code if necessary. Use if-else statements for everything else.