According to Nim manual: [https://nim-lang.org/docs/manual.html#statements-and-expressions-if-statement](https://nim-lang.org/docs/manual.html#statements-and-expressions-if-statement)
_In if statements new scopes begin immediately after the if /elif/else keywords
and ends after the corresponding then block._
For example:
if true:
let foo = 1
# Error: undeclared identifier: 'foo'
echo foo
Run
You can write shorter code by using if expression and tuple unpacking
[https://nim-lang.org/docs/manual.html#statements-and-expressions-if-expression](https://nim-lang.org/docs/manual.html#statements-and-expressions-if-expression)
[https://nim-lang.org/docs/manual.html#statements-and-expressions-tuple-unpacking](https://nim-lang.org/docs/manual.html#statements-and-expressions-tuple-unpacking)
proc f(size=1) =
let (widFrame, hiFrame) = if size == 1: (320, 200) else: (3200, 2000)
echo (widFrame, hiFrame)
f(1)
f(2)
Run
