In Go language, strings are different from other languages like Java, C++, Python, etc. It is a sequence of variable-width characters where each and every character is represented by one or more bytes using UTF-8 Encoding. In Go strings, you are allowed to split a string into a slice with the help of following functions. These functions are defined under strings package so, you have to import strings package in your program for accessing these functions:
1. Split: This function splits a string into all substrings separated by the given separator and returns a slice which contains these substrings.
Syntax:
func Split(str, sep string) []string
Here, str is the string and sep is the separator. If str does not contain the given sep and sep is non-empty, then it will return a slice of length 1 which contain only str. Or if the sep is empty, then it will split after each UTF-8 sequence. Or if both str and sep are empty, then it will return an empty slice.
Example:
// Go program to illustrate how to split a stringpackage main import ( "fmt" "strings") // Main functionfunc main() { // Creating and initializing the strings str1 := "Welcome, to the, online portal, of GeeksforGeeks" str2 := "My dog name is Dollar" str3 := "I like to play Ludo" // Displaying strings fmt.Println("String 1: ", str1) fmt.Println("String 2: ", str2) fmt.Println("String 3: ", str3) // Splitting the given strings // Using Split() function res1 := strings.Split(str1, ",") res2 := strings.Split(str2, "") res3 := strings.Split(str3, "!") res4 := strings.Split("", "GeeksforGeeks, geeks") // Displaying the result fmt.Println("\nResult 1: ", res1) fmt.Println("Result 2: ", res2) fmt.Println("Result 3: ", res3) fmt.Println("Result 4: ", res4) } |
Output:
String 1: Welcome, to the, online portal, of GeeksforGeeks String 2: My dog name is Dollar String 3: I like to play Ludo Result 1: [Welcome to the online portal of GeeksforGeeks] Result 2: [M y d o g n a m e i s N a w a b] Result 3: [I like to play Ludo] Result 4: []
2. SplitAfter: This function splits a string into all substrings after each instance of the given separator and returns a slice which contains these substrings.
Syntax:
func SplitAfter(str, sep string) []string
Here, str is the string and sep is the separator. If str does not contain the given sep and sep is non-empty, then it will return a slice of length 1 which contain only str. Or if the sep is empty, then it will split after each UTF-8 sequence. Or if both str and sep are empty, then it will return an empty slice.
Example:
// Go program to illustrate how to split a stringpackage main import ( "fmt" "strings") // Main functionfunc main() { // Creating and initializing the strings str1 := "Welcome, to the, online portal, of GeeksforGeeks" str2 := "My dog name is Dollar" str3 := "I like to play Ludo" // Displaying strings fmt.Println("String 1: ", str1) fmt.Println("String 2: ", str2) fmt.Println("String 3: ", str3) // Splitting the given strings // Using SplitAfter() function res1 := strings.SplitAfter(str1, ",") res2 := strings.SplitAfter(str2, "") res3 := strings.SplitAfter(str3, "!") res4 := strings.SplitAfter("", "GeeksforGeeks, geeks") // Displaying the result fmt.Println("\nResult 1: ", res1) fmt.Println("Result 2: ", res2) fmt.Println("Result 3: ", res3) fmt.Println("Result 4: ", res4) } |
Output:
String 1: Welcome, to the, online portal, of GeeksforGeeks String 2: My dog name is Dollar String 3: I like to play Ludo Result 1: [Welcome, to the, online portal, of GeeksforGeeks] Result 2: [M y d o g n a m e i s N a w a b] Result 3: [I like to play Ludo] Result 4: []
3. SplitAfterN: This function splits a string into all substrings after each instance of the given separator and returns a slice which contains these substrings.
Syntax:
func SplitAfterN(str, sep string, m int) []string
Here, str is the string, sep is the separator, and m is used to find the number of substrings to return. Here, if m>0, then it returns at most m substrings and the last string substring will not split. If m == 0, then it will return nil. If m<0, then it will return all substrings.
Example:
// Go program to illustrate how to split a stringpackage main import ( "fmt" "strings") // Main functionfunc main() { // Creating and initializing the strings str1 := "Welcome, to the, online portal, of GeeksforGeeks" str2 := "My dog name is Dollar" str3 := "I like to play Ludo" // Displaying strings fmt.Println("String 1: ", str1) fmt.Println("String 2: ", str2) fmt.Println("String 3: ", str3) // Splitting the given strings // Using SplitAfterN() function res1 := strings.SplitAfterN(str1, ",", 2) res2 := strings.SplitAfterN(str2, "", 4) res3 := strings.SplitAfterN(str3, "!", 1) res4 := strings.SplitAfterN("", "GeeksforGeeks, geeks", 3) // Displaying the result fmt.Println("\nResult 1: ", res1) fmt.Println("Result 2: ", res2) fmt.Println("Result 3: ", res3) fmt.Println("Result 4: ", res4) } |
Output:
String 1: Welcome, to the, online portal, of GeeksforGeeks String 2: My dog name is Dollar String 3: I like to play Ludo Result 1: [Welcome, to the, online portal, of GeeksforGeeks] Result 2: [M y dog name is Dollar] Result 3: [I like to play Ludo] Result 4: []
