> it’s code already written and tested by > 1 person, edge cases already figured out. It is tested? Edge cases figured out? Essentially for this code?: re

> it’s code already written and tested by > 1 person, edge cases already figured out. It is tested? Edge cases figured out? Essentially for this code?: return start + val * (end - start); Sure, if its running in hostile environment, you might need to do those sanity checks for your parameters - but I have hard time imagining such situation. If you actually need to "Map a number in the range of 0-1 to a new value with a given range" in your own code, can't you guarantee that the variables are all numbers? Its your responsibility as a developer to know your code, and the data your code is handling. > Saves you time. There is something really wrong if finding a package to do this niche thing is faster and more optimal that just writing out that one line of code.