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Every language has it's own quirks, some even weirder than JS. The floating point "errors" are common to a hundred programming languages, that's why BigNum classes/extensions exist.



The problem in this case is not floating point approximations. It is that some functionalities (parseFloat vs parseInt, ++, 45.0 being printed 45 in most browsers) makes the user believe that JS has an integer type.


Square peg in a round hole, you wouldn't try to understand Haskell with a Ruby background either.

Since it has no types per se, it doesn't make much sense to think of an 'integer type'. Javascript only has a number primitive, which is a IEEE 754 float.




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