How does Lexical Scoping in Mojo 🔥 works (under 3 minutes)

Key Takeaways

so this is a snippet of modu code I want you to take a look just for a second pause this video if you have to and tell me what you think this script is going to print when I run it so first of all we have a variable X that I'm declaring and I'm using int 32 as the type of that variable however I'm assigning the value hello to an INT anytime you try to assign a string to an INT 32 by variable if that string is empty then the variable will get the value zero if the string has a value like in this case is hello then X is going to get the value one so here the first print statement should print the value one now I have a condition here and I'm saying if x and if you know python you know that in this case X is going to be true because the value of x is one therefore this is the class of condition that is going to execute inside I'm red declaring the variable X this is something that's new in modu is called shadowing a variable because this new X now is valid within this scope of this condition this x is going to die after the condition is over and this x is just a completely new variable it's not the same as the outer X now this new X I'm assigning a value of the outer X I'm referencing the outer X right here plus 10 because the outer X has the value of one this x here now is going to have the value of 11 right it's going to be 1 + 10 that will be 11 now remember this declaration of X is going to die as soon as I get out of that condition therefore this line should be referencing the outer X which has a value of one so if I execute this code right now we should see 11 111 on the screen let's see if this is true if I'm not drunk and 111 I hope that makes sense