regexp assistance

[mike]

Hi,

I am trying to get files that looks like:

xxxInds.java
yyyReset.java
zzzRespone.java

I am using the following regexp:

return unless -f $File::Find::name;
/^.*Inds|Reset|Response\.java\z/s

I get files with another file extension than java.

Is \z not to match at the end of a string?

br,

//mike

 

[Jürgen Exner]

/^.*Inds|Reset|Response\.java\z/s

'z' isn't special in a RE, therefore the backslash is redundant.

I get files with another file extension than java.

Is \z not to match at the end of a string?

No, what gave you that idea?
See 'perldoc perlre' and probably 'perldoc perlretut'.

jue

 

[mike]

'z' isn't special in a RE, therefore the backslash is redundant.



No, what gave you that idea?
http://www.somacon.com/p127.php

See 'perldoc perlre' and probably 'perldoc perlretut'.

jue

 

[mike]

It's in table 5.7 (Alphanumeric Regex Metasymbols) of the camel book!

BugBear

My question is still not answered...

//mike

 

[sreservoir]

Hi,

I am trying to get files that looks like:

xxxInds.java
yyyReset.java
zzzRespone.java

I am using the following regexp:

return unless -f $File::Find::name;
/^.*Inds|Reset|Response\.java\z/s

this gets:
anything with Inds in it
anything with Reset in it
anything that ends with Response.java

I get files with another file extension than java.

Is \z not to match at the end of a string?

Yes, though you might get "Response.java\n", iirc.

Which probably still doesn't aswer your implicit question, but you
didn't ask.

 

[Marc Girod]

        /^.*Inds|Reset|Response\.java\z/s

Parentheses?

/^.*(Inds|Reset|Response)\.java\z/s

Marc

 

[Ramon F Herrera]

Parentheses?

/^.*(Inds|Reset|Response)\.java\z/s

Marc

Parentheses will be the bane of me. I always seem to have too few or
too many. The crux of such problem is that parentheses have two
distinct purposes in regexes:

(1) The normal grouping used in math and programming languages.

(2) The "grab this part" function.

Who invented regexes anyway, was it Larry Wall? I would have used
angle brackets for the functionality (2) above.

-Ramon

 

[sln]

Hi,

I am trying to get files that looks like:

xxxInds.java
yyyReset.java
zzzRespone.java

I am using the following regexp:

return unless -f $File::Find::name;
/^.*Inds|Reset|Response\.java\z/s

/^.*(?:Inds|Reset|Response)\.java$/s
-sln

 

[sln]

/^.*(?:Inds|Reset|Response)\.java$/s

/^.*(?:Inds|Reset|Response)\.java$/
-sln

 

[sln]

The difference is important. /$/ will match before a newline at the end
of the string; /\z/ will not. When you are certain your strings won't
contain newlines, there is no difference, but once you start considering
using /m and /s you should also consider whether you need /\z/ instead
of /$/.

Ben

I guess \A\Z\z in multiple lines, mean "only" to be once.

-sln

 

[Peter J. Holzer]

No, what gave you that idea?
See 'perldoc perlre' and probably 'perldoc perlretut'.

Please open 'perldoc perlre' and search for \z.

hp

 

[Jürgen Exner]

It's in table 5.7 (Alphanumeric Regex Metasymbols) of the camel book!

I stand corrected. It is listed in perlre in the zero-width assertions
category.

jue

 

[Justin C]

Is \z not to match at the end of a string?

No, $ matches end of string. /^string$/

Justin.

 

[Randal L. Schwartz]

Peter> Please open 'perldoc perlre' and search for \z.

"I keep searching for \z, but all I find is the end of string!"

 

[Steve C]

Peter> Please open 'perldoc perlre' and search for \z.

"I keep searching for \z, but all I find is the end of string!"

My problem is that I've been searching for $ for years and never
find enough.