Golang cheat sheet

Go (or Golang) is a programming language that was developed at Google in 2007 and released to the public in 2009. It is designed to be efficient, expressive, and easy to read.

Here is a cheat sheet for Go, along with explanations for each step:

  1. Variables and Constants:
  2. var keyword is used to declare variables.

  3. const keyword is used to declare constants.

  4. Data Types:

  5. int is used to represent integer values.
  6. float64 is used to represent floating-point values.
  7. string is used to represent text.

  8. bool is used to represent boolean values (true or false).

  9. Control Flow:

  10. if statement is used for conditional execution.
  11. for loop is used for repeated execution.

  12. switch statement is used for multi-way branching.

  13. Functions:

  14. func keyword is used to declare a function.
  15. Function parameters are enclosed in parentheses.

  16. The return type of a function is specified after the parameter list.

  17. Arrays and Slices:

  18. Arrays have a fixed length and their elements are of the same type.

  19. Slices are a dynamically-sized, flexible view into the elements of an array.

  20. Pointers:

  21. & operator is used to get the address of a variable.

  22. * operator is used to declare a pointer variable and to dereference a pointer.

  23. Structs:

  24. type keyword is used to define a new data type.
  25. struct keyword is used to define a struct type.

  26. Fields of a struct are accessed using dot notation.

  27. Maps:

  28. map is a built-in type that associates values with keys.

  29. Keys in a map must be of the same type, and values can be of any type.

  30. Interfaces:

  31. interface is a type that defines a set of methods.

  32. A type satisfies an interface if it implements all the methods of that interface.

  33. Error Handling:

  34. Go uses errors as a standard way to handle exceptional situations.

  35. The error type is a built-in interface type.

  36. Concurrency:

  37. Goroutines are lightweight threads of execution in Go.
  38. The go keyword is used to start a new goroutine.

  39. Channels are used for communication and synchronization between goroutines.

  40. Packages:

  41. Go programs are organized into packages.
  42. The import keyword is used to import packages from the standard library or other packages.

Remember, this cheat sheet is just a quick reference guide. It is important to consult the official Go documentation and practice writing code to become proficient in the language.