Function return type of size_t doesn't compile about nbind HOT 3 CLOSED

This is probably because size_t is a 64-bit integer on your system and JavaScript has no equivalent type. There are 3 options to convert to on the JavaScript side:

• Double, dropping the low bits. That still gives you 53 bits so in many real-world cases it would never get rounded.
• 32-bit integer, dropping the high bits.
• An object holding two 32-bit parts and a toString method outputting the 64-bit number in base 10.

All of these have their own dangers and inefficiencies. Best might be to allow setting a global policy and overriding it per-function in the bindings. It will take a while to do. Maybe for now it would be best to convert to double and warn about it?

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Good point!
I'll switch to uint32_t and will check that my size_t values never exceed its MAX.

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Nowadays size_t should be supported, see 64-bit integers.

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