Golang : Get sub string example
Getting sub string is a common task in extracting details from a larger set of information. Here is a quick and simple example on how to get sub strings easily in Golang.
NOTE : Golang does not provide a sub string method. However, Go will treat a string as a slice and we can get sub strings based on a given indexes - such as first and last index. If the given indexes are invalid. Go will throw panics. To prevent panics, you can check the length of a string with the builtin len()
function before proceeding to extract the sub string with first and last index.
Here you go!
package main
import "fmt"
func main() {
str := "sam,jenny,paul"
// Get substring from index 4(position starts from 0) to length of str.
substring := str[4:len(str)]
fmt.Println(substring)
// same as above
substring = str[4:]
fmt.Println(substring)
// get sam only
samstring := str[0:3]
fmt.Println(samstring)
}
Output :
jenny,paul
jenny,paul
sam
Play at : http://play.golang.org/p/x9UMI3eTfS
See also : Golang : How to check if a string contains another sub-string?
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+12.1k Golang : How to get a user home directory path?
+39k Golang : How do I convert int to uint8?
+7.2k Golang : Routes multiplexer routing example with regular expression control
+20.8k Golang : Print leading(padding) zero or spaces in fmt.Printf?
+4.5k Golang : Frobnicate or tweaking a string example
+25.1k Golang : Convert file content into array of bytes
+6.2k Golang : Check if one string(rune) is permutation of another string(rune)
+21.2k Golang : Read a file into an array or slice example
+5.8k Golang : Check if password length meet the requirement
+8.2k Golang : Create and shuffle deck of cards example
+19.8k Golang : How to read float value from standard input ?
+13.4k Golang : How to shuffle elements in array or slice?