Even though I really don't want new null-coalescing operators, I really appreciate the ternary operator in Python (or in C).
On Wed, Nov 2, 2016 at 12:38 PM, Mikhail V firstname.lastname@example.org wrote:
result = a > b ? x : y
is IMHO a syntactical herecy. Such things disgust me from programming. Why on earth one cannot just wrap it in function c = nicefunc(a,b)
The problem here is that the general form isn't ONLY to return 'x' or 'y' but the decide between arbitrary values. Hard-coding the variables into the function loses 90%+ of the point.
So the general function would need a signature like:
c = nicefunc(a, b, x, y)
The problem here is that this call might be:
c = nicefunc(a, b, run_for_hours(), has_side_effects())
We only want ONE of 'x' and 'y' to eagerly evaluate. In the C or Python ternary we get exactly that. Obviously, that also happens in your fully spelled out if/else block too, but that's multiline and needs to setup variables not just be used as an expression.