simple string comparing

[vertigo]

Hello
How can i check if $mystring is exactly equal to "."
Where "." means one character (comma) ?


Thanx
Michal

 

[Jürgen Exner]

How can i check if $mystring is exactly equal to "."
Where "." means one character (comma) ?

Did you check "perldoc perlop", section "Equality Operators"?

jue

 

[Jim Gibson]

Hello
How can i check if $mystring is exactly equal to "."
Where "." means one character (comma) ?

If you only want a comma, use

if( $mystring eq ',' ) {
# do something if it's a comma
}

If you want any one-character string:

if( $mystring =~ m/^.$/ ) {
# do something if it's one character
}

or even better

if( length($mystring) == 1 ) {
# it's one character
}

Note the different comparison operators:

eq for string compare
=~ for pattern match
== for numerical compare

Thanx
Michal

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