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lang-java
sqrt(x)example it should always be equal or above 0. But say that it isn't, then it is a programming error and most likely an edge case that should be added to the test suite. I think what I am after is that when it comes to programming errors you should fail in the test stage, not in runtime or worse, in productionsqrt(2)is -1 something is for 100% sure off. Going on from this point will not lead to anything good (other than avoiding an error message)