hiya, is there any way to quickly get number of de...

# getting-started

[Chris]

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.

[robin]

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

[Chris]

thx

[karelpeeters]

Also Nan, inifnity, scientific notation, ...

[robin]

Yup, all that too