sqrt("four") eq "two"

Seriously, it's a question of being willing to pay the price of validating the input yourself. In many cases you have to do it anyway; for example, for square roots even if you can trust the compiler that you are getting a number, you have to make sure that it is not negative (unless your sqrt function deals with complex numbers).

In reply to Re^2: Static typing is mostly a waste of time by itub
in thread Static typing is mostly a waste of time by johnnywang

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