The compiler assigns offsets to all members, and includes these in all load/store operations on members: struct foo { uint32_t bar; uint32_t baz; uint32_t get_baz() { return baz; } }; uint32_t get_baz_from_foo(foo *f) { return f->baz; } becomes (ARM assembler code used for simplicity): foo__get_baz: ; calling convention: this pointer in r3 ; load 32 … Read more
Observe the difference between parameters and arguments: return factorial(n) / (factorial(k) * factorial(n-k)); Here the first n is an argument – a value passed to the function being called. private int factorial(int n) Here n is a parameter – a placeholder to use in defining what the function should do when being called with an … Read more
Out-of-bound errors means you’re probably not accessing indices right, so check which of your data structures are vulnerable to that. Study the error message you get because that at least shows the line where the error happens (would have been better if it was included in the post). It seems the second for-loop in the … Read more
I’m not sure why people are so opposed to just answering the question. It’s a ternary operation. It’s a shortcut for an if/else clause. For this particular operation, Is x equivalent (===) to images.length-1? If so, set X to 0. Otherwise, set X to x + 1. This pattern is likely used to endlessly iterate … Read more
This more a Server Fault kind of question, but try running psql like this: sudo -u postgres psql When you install PostgreSQL, there’s no user account created for your current user, so you’d have to create one. That can be achieved like this (where masi is the wanted username): sudo -u postgres createuser -sdrPE masi … Read more