golang how does the rune() function work

by

rune is a type in Go. It’s just an alias for int32, but it’s usually used to represent Unicode points. rune() isn’t a function, it’s syntax for type conversion into rune. Conversions in Go always have the syntax type() which might make them look like functions.

The first bit of code fails because conversion of strings to numeric types isn’t defined in Go. However conversion of strings to slices of runes/int32s is defined like this in language specification:

Converting a value of a string type to a slice of runes type yields a
slice containing the individual Unicode code points of the string.
[golang.org]

So your example prints a slice of runes with values 102, 111 and 111

More Related Contents:

  1. Pre-processor directive in Go like in C [duplicate]
  2. Golang ascending order
  3. Convert map values to plain strings without brackets? [closed]
  4. Golang libphonenumber [closed]
  5. What are the use(s) for tags in Go?
  6. is there a way to create an instance of a struct from a string?
  7. How to avoid annoying error “declared and not used”
  8. How to broadcast message using channel
  9. Splitting client/server code
  10. What is a concise way to create a 2D slice in Go?
  11. How to wait for all goroutines to finish without using time.Sleep?
  12. How to list installed go packages
  13. Go template.ExecuteTemplate include html
  14. Accessing local packages within a go module (go 1.11)
  15. How to iterate through a map in Golang in order?
  16. Why Golang cannot generate json from struct with front lowercase character?
  17. generic map value
  18. Why do these two float64s have different values?
  19. Go template name
  20. Strange type definition syntax in Golang (name, then type, then string literal)
  21. time.Since() with months and years
  22. How to pad a number with zeros when printing?
  23. Pass slice as function argument, and modify the original slice
  24. Function signature with no function body
  25. How to clone a structure with unexported field?
  26. Closing channel of unknown length
  27. Testing a gRPC service
  28. Convert an integer to a byte array
  29. Force priority of go select statement
  30. Go exec.Command() – run command which contains pipe

Leave a Comment