7.6 - Go Strings

Strings

• Indexing a string gives us the UTF-8 representation of each character
• Underlying elements in a string is an array of bytes
  • Which is always why the length of a string is the number of bytes, not the number of characters

Solved with runes

• We can cast the string into an array of runes
• Runes are an alias for int32

String concatenation

• Strings are immutable
• We can create a string using var strSlice = []string{"H", "i"}
• O(n^2) operation since we are creating a new string every time we concatenate 2 strings
  • This is solved using StringBuilding from the strings package from Go
  • type: strings.Builder
  • Methods:
    • .WriteString(“a”) ⇒ appends a
    • .String() ⇒ create the new string