Golang : Extract sub-strings
To extract sub-strings from a string in Golang, it can be done by determining a common delimiter and tokenize each sub-string based on the delimiter or telling Golang to extract the sub-strings based on the character position.
For example :
package main
import (
"fmt"
"strings"
)
func main() {
str := "this is a string"
// extract each word from str
parts := strings.SplitN(str, " ", 4)
fmt.Println(parts[0])
fmt.Println(parts[1])
fmt.Println(parts[2])
fmt.Println(parts[3])
// now we want to extract based on number of characters/positions
subStr1 := str[:4] // this. REMEMBER start from zero....
fmt.Println(subStr1)
subStr2 := str[5:7] // is
fmt.Println(subStr2)
subStr3 := str[8:9] // a
fmt.Println(subStr3)
subStr4 := str[10:] // string
fmt.Println(subStr4)
subStr5 := str[2:12] // string
fmt.Println(subStr5)
}
See also : Find and replace a character in a string in Go
By Adam Ng
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