Is there a (cheap, i.e no list allocations) way to...

# announcements

[Dominaezzz]

Is there a (cheap, i.e no list allocations) way to get the size of a range? Like (1..5).size ?

[hho]

val IntRange.size: Int
	get() = endInclusive - start + 1

[hho]

I believe it's not in the stdlib because it wouldn't work for uncountable ranges.

[Dominaezzz]

Some ranges are countable though. Hmmph.

[hho]

It's a bit weird: There's a special ClosedFloatingPointRange but no special for countable ranges (which, if it existed, would be a great place for that size property)

[ilya.gorbunov]

Also note that some ranges like Int.MIN_VALUE..Int.MAX_VALUE cannot have their size expressed as Int.

[Dominaezzz]

Pesky. But I get it.