How to Efficiently Remove Leading and Trailing Whitespace from Strings in Go?

Removing Leading and Trailing White Spaces from Strings in Go

When handling string variables, it is often necessary to remove any leading (left) or trailing (right) white spaces to ensure data integrity. This process is crucial for maintaining data consistency and avoiding errors in subsequent processing.

Efficient Trimming Using 'strings.TrimSpace'

To effectively trim both leading and trailing white spaces in Go, the built-in strings.TrimSpace function is highly recommended. It returns a new string with all leading and trailing white spaces removed, while leaving the original string untouched.

Example

To illustrate its usage, let's consider the following code snippet:

package main

import (
    "fmt"
    "strings"
)

func main() {
    s := "\t Hello, World\n "
    fmt.Printf("%d %q\n", len(s), s)
    t := strings.TrimSpace(s)
    fmt.Printf("%d %q\n", len(t), t)
}

Output:

16 "\t Hello, World\n "
12 "Hello, World"

As you can see, the input string s contains leading (t) and trailing (n ) white spaces, with a length of 16 characters. After using strings.TrimSpace, we obtain a new string t of length 12, with all white spaces removed.

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