Hello,
Im trying to understand what the ^ and $ characters do when used in
For example:
/^abc/ =~ "!abc"
/abc$/ =~ "abc!"
Why do these two statements return nil and how does the "anchor" work
Can someone please clarify?
Does this mean that the regex is checking before the C\d+ ?@refdes [0] =~ /^C\d+/
Thanks in advance.
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--http://www.ruby-forum.com/ .
Hi
/^abc/ =~ "!abc"
Just like the definition says ^ is used to mark the beginning of a string:
/abc$/ =~ "abc!"
$ is used to mark the end of a string:
/^I love Ruby$/ will only match the string "I love Ruby" and not "He
CT1
6 July 2007 06:06
3
Hello,
Why do these two statements return nil and how does the "anchor" work
Can someone please clarify?
In addition to the answers already given, maybe you should check out this
I've found the parent site is a pretty decent reference for regular
Shajith
PS: Also note that the '^' character has a different meaning when used in a
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On 7/6/07, Al Cholic <desertfox@hot.ee> wrote:
Also, if the thread's title has meaning, a "^" is called a caret.
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--http://www.ruby-forum.com/ .
^, $, \A, \Z, \B, etc. are called anchors.
Corey
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On Jul 5, 2007, at 10:33 PM, Thomas Wieczorek wrote:
Hi
/^abc/ =~ "!abc"
Just like the definition says ^ is used to mark the beginning of a string:
/abc$/ =~ "abc!"
$ is used to mark the end of a string:
/^I love Ruby$/ will only match the string "I love Ruby" and not "He
Thank you very much guys. This topic is much clearer now.
···
--http://www.ruby-forum.com/ .
Hi,
>/^abc/ =~ "!abc"
Just like the definition says ^ is used to mark the beginning of a string:
Another time:
^ and $ match the beginning/end of a ___line___
This makes a difference when you string contains newline
"abc\nde\nfgh\n".scan /^./ # => ["a", "d", "f"]
I would have guessed that /\z/ is faster than /$/ but /$/ is
Bertram
···
Am Freitag, 06. Jul 2007, 14:33:12 +0900 schrieb Thomas Wieczorek:
--http://www.bertram-scharpf.de
Forum
6 July 2007 10:13
8
A *very large* value of 0 that is
Robert
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On 7/6/07, Thomas Wieczorek <wieczo.yo@googlemail.com> wrote:
/^abc/ =~ "abc!"
> /abc$/ =~ "abc!"
$ is used to mark the end of a string:
--
Ooops, should be 1. Sorry
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2007/7/6, Robert Dober <robert.dober@gmail.com>:
On 7/6/07, Thomas Wieczorek <wieczo.yo@googlemail.com> wrote:>
>
Souleymane Tounkara wrote:
Dear Sir,
<<stuff here>>
THANKS FOR YOUR CO- OPERATIONS.
It seems that we were spammed with a classic internet con. How do we
···
--http://www.ruby-forum.com/\ .
Al Cholic wrote:
Thank you very much guys. This topic is much clearer now.
To learn more, a book I highly recommend is "Mastering Regular Expressions" by Jeffrey Friedl.. Although the examples are written in Perl (at least the first edition copy that I have), translating any of these to Ruby should prove to be trivial. The time you spend reading the book will save you many hours when you need to create, debug and/or optimize more complex expressions.
Regards,
I second that book, I read some of it years ago, and it is fascinating stuff!
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On Jul 6, 2007, at 1:03 PM, Jim Clark wrote:
Al Cholic wrote:
Thank you very much guys. This topic is much clearer now.
To learn more, a book I highly recommend is "Mastering Regular Expressions" by Jeffrey Friedl.. Although the examples are written in Perl (at least the first edition copy that I have), translating any of these to Ruby should prove to be trivial. The time you spend reading the book will save you many hours when you need to create, debug and/or optimize more complex expressions.
Regards,
