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Golang strings.TrimLeft() Function with Examples

Golang | strings.TrimLeft() Function: Here, we are going to learn about the TrimLeft() function of the strings package with its usages, syntax, and examples.
Submitted by IncludeHelp, on August 23, 2021

strings.TrimLeft()

The TrimLeft() function is an inbuilt function of strings package which is used to get a string with all specified leading Unicode code points removed. It accepts two parameters – a string and a cutset string, and returns trimmed string.

Syntax:

func TrimLeft(str, cutset string) string

Parameter(s):

  • str : The string in which we have to remove leading Unicode code points.
  • cutset : The string (a set of characters / Unicode code points) to be trimmed.

Return Value:

The return type of TrimLeft() function is a string, it returns a string with all specified leading Unicode code points removed.

Example 1:

// Golang program to demonstrate the
// example of strings.TrimLeft() Function

package main

import (
	"fmt"
	"strings"
)

func main() {
	fmt.Println(strings.TrimLeft("  Hello, world  ", " "))
	fmt.Println(strings.TrimLeft("  Hello,   world  ", " "))
	fmt.Println(strings.TrimLeft("...Hello, world...", "."))
	fmt.Println(strings.TrimLeft("###Hello, world!!!", "#"))
	fmt.Println(strings.TrimLeft("###Hello, world!!!", "!"))
	fmt.Println(strings.TrimLeft("###Hello, world!!!", "#!"))
}

Output:

Hello, world  
Hello,   world  
Hello, world...
Hello, world!!!
###Hello, world!!!
Hello, world!!!

Example 2:

// Golang program to demonstrate the
// example of strings.TrimLeft() Function

package main

import (
	"fmt"
	"strings"
)

func main() {
	var str string
	var result string

	str = "***Hi, there! How are you?"
	result = strings.TrimLeft(str, "*")
	fmt.Println("Actual string :", str)
	fmt.Println("Trimmed string:", result)

	str = "'Hi, how are you?"
	result = strings.TrimLeft(str, "'?")
	fmt.Println("Actual string :", str)
	fmt.Println("Trimmed string:", result)

	str = "¡¡¡Hello, world!!!"
	result = strings.TrimLeft(str, "¡!")
	fmt.Println("Actual string :", str)
	fmt.Println("Trimmed string:", result)
}

Output:

Actual string : ***Hi, there! How are you?
Trimmed string: Hi, there! How are you?
Actual string : 'Hi, how are you?
Trimmed string: Hi, how are you?
Actual string : ¡¡¡Hello, world!!!
Trimmed string: Hello, world!!!

Golang strings Package Functions »


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