Integer Math in JavaScript

• nanbox

  2 17 8.4 JavaScript

  Encode non-numerical data as NaNs

https://github.com/philihp/nanbox

You don't even need a Double, you can use a Float NaN to encode strings:

> IEEE 754 encodes 32-bit floating points with 1 bit for the sign, 8 bits for the exponent, and 23 bits for the number part (mantissa). (...)

> 23 bits isn't much space, but conveniently the max size of a Unicode codepoint is 0x10FFFF, making it a 22-bit charset. When you encode your strings in UTF-32, you're only going to be using 22 of those bits, so masking the top portion with the NaN signature makes all of your characters NaNs.

• proposal-decimal

  16 412 7.8 HTML

  Built-in decimal datatype in JavaScript

  

given the popularity of javascript, it's about time we had better native tools for dealing with numbers in general, but it seems like the discussion is very slow on this front. for instance, the decimal proposal is still at stage 1 [1]. and no, BigInt does not solve that.

[1] https://github.com/tc39/proposal-decimal

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