Hi developers! I am self-studying Go (Golang). Could you please give me some advice on how to fully understand functions? Also, where can I find practice problems on this topic?
Additionally, could you provide a roadmap for learning backend development using the Gin library? My goal is to get a job as quickly as possible to earn money for my university tuition. Any advice you share will be incredibly helpful to me!
First use oficial docs: A Tour of Go
Try Python Tutor to see running line by line, or try use debugger to understand functions.
Maybe can help this small piece of code
```
#include <stdio.h> // This call a lib with function printf
// in Go you don’t need this lib, because print it is inside standard.
// This is MyFunction and return a int
int MyFunction(int x) {
// Now we are inside this block of code, only to organize
return x;
}
// main it is the heart, all begins here
int main() {
printf(“let’s start the code”);
// Now to organize all code, I separate some code inside a group of code,
// and call as MyFunction
MyFunction(2); // Now you are inside this function
// Program finish
return 0;
}
```
Paste C code in link below and run
Hi 
Once you’re comfortable with Go syntax and data types (strings/runes, slices vs arrays, maps, structs), functions start to make more sense because you understand what you’re passing around.
Focus on:
* named vs unnamed returns
* functions that take/return other functions
* methods vs functions (methods attach to structs)
* pointers in function params (when you need to modify data)
For practice, just build small things:
* calculator
* string utilities (reverse, palindrome, count chars)
* slice helpers (filter/map-style functions)
* a simple CLI like a result/grade calculator using structs or maps
which takes the students name and score from the cli and gives a grade based on the score
For practice platforms: Exercism, Codewars, LeetCode (easy problems).
Also, don’t only do exercises—building small projects helps it click faster, roadmap.sh is a place to find great projects.
For Gin, I’m still practicing REST APIs manually before fully relying on frameworks.
-–