Usefull Hints

Key exists in map

if versionString, ok := pathSections["key"]; ok {
  // Do something
}

Using panic() instead of log.Fatal displays a helpful stacktrace in the console

Equiv of php substr()

// You can edit this code!
// Click here and start typing.
package main

import "fmt"

func main() {
	s1 := "This is a string"
	s2 := s1[0:7] + " the second " + s1[10:16]
	fmt.Println(s1)
	fmt.Println(s2)
}

Declaring static maps and a useful library for humanizing things: https://github.com/dustin/go-humanize/blob/master/bytes.go

You can install the following tools with this command

apt-get install linux-tools-common linux-tools-generic linux-tools-moby

To get the latency of the scheduler intervals (might be useful if you're running too many goroutines as this will slow the code down as it will be doing more context switching that running the actual application

perf sched

You can use strace to get the syscalls that your application makes

strace -c ./your-binary

Get what libraries the binary links to. Will also return if its a statically compiled binary.

ldd ./your-binary

Testing Article:

https://medium.com/@povilasve/go-advanced-tips-tricks-a872503ac859