Applying Strings, Arrays and Slices
Explore how to apply strings, arrays, and slices in Go through practical techniques such as converting strings to byte and rune slices, extracting substrings, and handling immutability. Learn sorting and searching methods using Go's standard library, simulate common slice operations like append and delete, and understand slice memory management to write efficient Go programs.
Making a slice of bytes or runes from a string
A string in memory is, in fact, a 2 word-structure consisting of a pointer to the string data and the length. The pointer is completely invisible in Go-code. For all practical purposes, we can continue to see a string as a value type, namely its underlying array of characters.
If s is a string (so also an array of bytes), a slice of bytes c can immediately be made with
c:=[]byte(s)
This can also be done with the copy-function:
copy(dst []byte, src string)
The for range can also be applied as ...