Golang : How to check if input string is a word?
Problem :
I'm writing a parser and I need to determine if the user input is a word or something else? How to do that?
Solution :
Use the IsWordChar()
function from syntax/regexp
package. For example :
NOTE : This solution is for ASCII-only: the word characters are [A-Za-z0-9_].
package main
import (
"fmt"
"regexp/syntax"
)
func main() {
word1 := []rune("alpha")
word2 := rune('吃') // no need for array if for single rune
word3 := []rune("1234")
word4 := []rune(" $#$^@#$ ")
ok := syntax.IsWordChar(word1[0])
fmt.Printf("%v is a word ? : %v \n", string(word1), ok)
ok = syntax.IsWordChar(word2)
fmt.Printf("%v is a word ? : %v \n", string(word2), ok)
ok = syntax.IsWordChar(word3[0])
fmt.Printf("%v is a word ? : %v \n", string(word3), ok)
ok = syntax.IsWordChar(word4[0])
fmt.Printf("%v is a word ? : %v \n", string(word4), ok)
}
Output :
alpha is a word ? : true
吃 is a word ? : false
1234 is a word ? : true
$#$^@#$ is a word ? : false
Reference :
https://www.socketloop.com/references/golang-regexp-syntax-iswordchar-function-example
See also : Golang : How to tokenize source code with text/scanner package?
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
+19.4k Golang : How to Set or Add Header http.ResponseWriter?
+9k Golang : Get curl -I or head data from URL example
+13.6k Golang : Image to ASCII art example
+4.4k Java : Generate multiplication table example
+7.7k Golang : Example of how to detect which type of script a word belongs to
+14.5k Golang : Missing Bazaar command
+18.7k Unmarshal/Load CSV record into struct in Go
+4.2k Javascript : How to show different content with noscript?
+15.1k Golang : How to add color to string?
+20.7k Golang : Underscore or snake_case to camel case example
+16.8k Golang : How to generate QR codes?
+5k Golang : PGX CopyFrom to insert rows into Postgres database