Regex for accepting only braces

[unborn brook]

Hi everyone, I just started to learn go and came across this challenge on how to check if braces are valid or not.
example:
([{}]) -> true
((]}) -> false
{{}) -> false
(){}[()] -> true
I kinda get the idea on how I'm going to make the function. But, first of all I need to check if the input string are valid (means it only contains braces). I've red the documentation about go regex, but could not fully understand it yet. How do you translate this -> "only (, {, [, ], }, ) are allowed" into go regex?

[pine topaz]

i would think about the problem a bit more deeply because you definitely do not need regex for this

in fact i would go as far to say that it is the incorrect solution

[unborn brook]

I actually solved it without regex, but then I'm just curious about regex in go 😄

[pine topaz]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes

is what you want

[unborn brook]

isn't this javascript?

[pine topaz]

the regex is the same

[unborn brook]

it's a bit different from what i've read in go documentation

[pine topaz]

more or less

the important bits you need here are the same

https://www.regular-expressions.info/charclass.html

that allows you to say "the set of these characters"

[unborn brook]

I will look into this, thankyou for sharing this

[pine topaz]

^ at the beginning says "begins with"

$ at the end says "ends with"

then (x)+ says 1 or more of x capture group (your character set

[unborn brook]

i get it now. here is the code I came up with
var text = "[{()}]9"
var regex, _ = regexp.Compile(^[\[\{\(\)\}\]]*$)
var isMatch = regex.MatchString(text)
fmt.Println(isMatch)

thank you for your support! really appreciate it

[pine topaz]

is an empty string valid

[unborn brook]

owh.. empty string still valid tho 😕

need to read it again

[pine topaz]

* is 0 or more

[unborn brook]

oh I see.. it's good now. thank you

[pine topaz]

https://regexr.com/

[unborn brook]

this tool makes it a lot more easier to understand

[pine topaz]

sorry you actually want https://regex101.com/

and set it to golang