In Go, we have the strings package for string manipulation. Some common string manipulation operations:

String Replacement#

The strings.Replace function is used to replace occurrences of a substring within a string. It takes four arguments: the original string, the substring to be replaced, the replacement substring, and the maximum number of replacements to make.

package main

import (
    "fmt"
    "strings"
)

func stringsII() {
    // Define first and last names
    firstName := "Rabi"
    lastName := "Siddique"

    // Replace 'i' with 'ee' in firstName (up to 2 occurrences)
    a := strings.Replace(firstName, "i", "ee", 2)
    // Replace 'Si' with 'Sa' in lastName (up to 1 occurrence)
    b := strings.Replace(lastName, "Si", "Sa", 1)

    // Print the original and modified strings
    fmt.Println(firstName + " " + lastName) // Output: Rabi Siddique
    fmt.Println(a + " " + b)                // Output: Rabee Saddique
}

func main() {
    stringsII()
}

String Builder#

For efficient string concatenation, Go provides the strings.Builder type. This type is optimized for building strings by minimizing memory reallocations.

package main

import (
    "fmt"
    "strings"
)

func stringsII() {
    // Create a new strings.Builder
    var builder strings.Builder

    // Write strings to the builder
    builder.WriteString("Hello")
    builder.WriteString(" ")
    builder.WriteString("World")

    // Convert the builder contents to a string and print it
    fmt.Println(builder.String()) // Output: Hello World
}

func main() {
    stringsII()
}