Regularexpression for check specialchars

Ruby
1

Hi friends,
I want to check the string contains only specialchars or not
Can anyone help

2

Hi,

What do you mean by “specialchars”? You have to be more specific.

3

Try looking at character classes

[[:print:]]
[[:graph:]]

and their negations

[^[:print:]]
[^[:graph:]]

4

Brian C. wrote in post #1055059:

Try looking at character classes

[[:print:]]
[[:graph:]]

and their negations

[^[:print:]]
[^[:graph:]]

I mean anyspecialchars like !@#$%^&*()_+,./:
I have one variable for example

message = “hello”
Here message contains only characters

message="@#$%^"
In this case i have only specialchars I want to check the case like
these

5

If you only consider ASCII specialchars, you can simply enumerate them
in a character class:

/\A[!-/:-@[-`{-~]*\z/

This matches any string that is empty or consists only of the characters

!"#$%&'()*+,-./:;<=>?@[]^_`{|}~

However, since this regex is hard to read and requires knowledge of the
ASCII table, it’s probably better to use the POSIX classes mentioned by
Brian or property classes (\p{} syntax):

/\A[\p{ASCII}&&\p{Graph}&&\p{^Alnum}]*\z/

The “&&” means intersection and the “^” means negations. That is, you’re
selecting all ASCII characters which are visible (Graph property), but
not alphanumeric.

See Class: Regexp (Ruby 1.9.3) for explanations of
the syntax.