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How Can I Efficiently Remove Whitespace from a String in Go?

Patricia Arquette
Release: 2024-11-13 08:13:02
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How Can I Efficiently Remove Whitespace from a String in Go?

Efficient Whitespace Removal in Go

In Go, processing strings often involves manipulating whitespace to improve readability or data accuracy. This brings us to the task of removing all whitespace from a given string.

Traditional Approach

A common approach is to chain the strings.Fields and strings.Join functions:

response = strings.Join(strings.Fields(response), "")
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While this method is effective, it can be inefficient for long strings with significant whitespace.

Optimal Solution

The optimal solution for stripping all whitespace from a string is to leverage the strings.ReplaceAll function:

randomString := "  hello      this is a test"
fmt.Println(strings.ReplaceAll(randomString, " ", ""))

// Output:
// hellothisisatest
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In this example, the ReplaceAll function replaces every occurrence of the whitespace character (" ") with an empty string (""). This effectively removes all whitespace, resulting in the stripped string.

Note:

It's important to remember that this approach only removes the whitespace character. To remove other types of whitespace, such as tabs or newlines, multiple calls to strings.ReplaceAll with the corresponding whitespace character would be necessary.

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