Tip number 1 for future Alessandro
· 1 minute read
This is a public service announcement: I got burned by a coding mistake that I failed to notice in a ~250 lines function, I am writing this down for future Alessandro to remember what happens (and some public shaming too, I guess that is well deserved here). And maybe it’ll be helpful to someone else, who knows!
Here comes the question:
What if you forget to assign a value to a variable which gets printed in the middle of a function being executed?
The answer is: absolutely nothing, and you get burned if you don’t notice it.
Let’s have a quick example:
Can you tell what value will
fun() return when called?
If you do, hats off: I could guess, but I wasn’t so sure and I had to check it out.
If you don’t, here is the answer:
##  1
The missed assignment is lost in the ether, and nothing is printed when executing
x + 1 as all prints are suppressed by default within a function.
Future Alessandro: if you read this, you let me down. How could you repeat the same silly mistake and end up here all over again?