hiya, is there any way to quickly get number of decimal digits from

Double

? I would like the exact number of deciaml digits, ie. 424.234 would return 3 or “234” (either would be good) thanks in advance.

Most obvious way would be to get the String representation, remove the decimal point and everything in front of it, and count the characters of what's left:

d.toString().split('.')[1].length

. Problem is this can quickly give unexpected results because of precision errors with the double type. For example

(0.1 + 0.2).toString().split('.')[1].length

will yield

17

, when it should intuitively be

1

, because of rounding errors. Better to go to using BigDecimals for this kind of job

thx

Also

Nan

, inifnity, scientific notation, ...

Yup, all that too