How to get Substring before Specific Character in Go - Step by Step Examples

How to get Substring before Specific Character in Go ?

Answer

To get the substring before a specific character in Go, you can use the strings.Split function along with array indexing. The strings.Split function takes the string and delimiter as arguments, and splits the string by the delimiter. Pass the given string as the first argument, and the specific character as the delimiter string. After the split is done, the first element of the returned array is our required substring.

✐ Examples

1 Substring Before '/' in "https://example.com/page"

In this example,

We import the strings package.
We create a variable named url with a value of "https://example.com/page".
We use the strings.Split function with '/' as the separator to split the string.
Finally, we access the first element of the resulting array to get the substring before the specified character.

Go Program

package main

import (
    "fmt"
    "strings"
)

func main() {
    url := "https://example.com/page"
    parts := strings.Split(url, "/")
    fmt.Println("Substring before '/':", parts[0])
}

Output

Substring before '/': https:

2 Substring Before ',' in "Hello,World"

In this example,

We import the strings package.
We create a variable named str with a value of "Hello,World".
We use the strings.Split function with ',' as the separator to split the string.
Finally, we access the first element of the resulting array to get the substring before the specified character.

Go Program

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "Hello,World"
    parts := strings.Split(str, ",")
    fmt.Println("Substring before ',':", parts[0])
}

Output

Substring before ',': Hello

Summary

In this tutorial, we learned how to get Substring before a Specific Character in Go language, using strings.Split function, with well detailed examples.

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How to get Substring before Specific Character in Go - Step by Step Examples