Телеграмм чат группы usePerlOrDie страница 1692

Алексей Клименко

That's a good cat!

I use this one:

J

How do I format for unknown length ?
For example :
\d{1}\.d{2} = 4.88

I want a regexp for 4.888 or 444.88888
How do I do this ?
Where the number of digits is not known but it has a pattern of xx.yy or 22.44.

09:36пожаловаться #2

IB

https://perldoc.perl.org/perlre#Quantifiers

How do I format for unknown length ?
For example :
\d{1}\.d{2} = 4.88

I want a regexp for 4.888 or 444.88888
How do I do this ?
Where the number of digits is not known but it has a pattern of xx.yy or 22.44.

09:38пожаловаться #3

J

https://perldoc.perl.org/perlre#Quantifiers

Ivan Bessarabov

Thanks, I read. That's when the quantifier is certain. I'm looking for uncertain number of digits.

09:43пожаловаться #4

g

gibzer in use Perl or die;

Как сделать, чтобы при сплите получалось ровно столько значений, сколько задано в лимите?
То есть я хочу получить тут
perl -M'Data::Dumper' -e '@t = split(/=/, "ab", 2); print Dumper(\@t);'
вместо

$VAR1 = [
          'ab'
        ];

такое

$VAR1 = [
          'ab',
          undef
        ];

09:50пожаловаться #5

g

gibzer in use Perl or die;

Это надо чтобы получить консистентный хеш.

09:51пожаловаться #6

АК

How do I format for unknown length ?
For example :
\d{1}\.d{2} = 4.88

I want a regexp for 4.888 or 444.88888
How do I do this ?
Where the number of digits is not known but it has a pattern of xx.yy or 22.44.

/\d+\.\d+/

09:51пожаловаться #7

АК

gibzer

Это надо чтобы получить консистентный хеш.

Пойти циклом, пушнуть хвост?

09:51пожаловаться #8

IB

Thanks, I read. That's when the quantifier is certain. I'm looking for uncertain number of digits.

Read it several more times and you will find the answer in that section.

09:52пожаловаться #9

АК

Ivan Bessarabov

Read it several more times and you will find the answer in that section.

sticker.webp

(30.87 Кб)

09:52пожаловаться #10

SZ

Sergey Zhmylove in use Perl or die;

Thanks, I read. That's when the quantifier is certain. I'm looking for uncertain number of digits.

What do you need? We can help you but we still don't understand your task

09:53пожаловаться #11

J

Алексей Клименко

/\d+\.\d+/

Thanks. What I needed was the '+'.

09:55пожаловаться #12

J

Sergey Zhmylove

What do you need? We can help you but we still don't understand your task

Thanks for the help. But I want to learn, if I don't learn by myself, I will have to keep asking.

09:55пожаловаться #13

SZ

Sergey Zhmylove in use Perl or die;

Thanks for the help. But I want to learn, if I don't learn by myself, I will have to keep asking.

Np, you're very welcome with your questions

09:56пожаловаться #14

J

Ivan Bessarabov

Read it several more times and you will find the answer in that section.

You're right. It's the + that I needed.

09:56пожаловаться #15

IB

👍

09:57пожаловаться #16

IB

Learning Perl: Making Easy Things Easy and Hard Things Possible: Schwartz, Randal L., foy, brian d, Phoenix, Tom: 9781491954324: Amazon.com: Books

It is a good idea to start by reading a book about perl. There is one book that starts from the very beginning. https://www.amazon.com/gp/product/1491954329/

Amazon

Learning Perl: Making Easy Things Easy and Hard Things Possible [Schwartz, Randal L., foy, brian d, Phoenix, Tom] on Amazon.com. *FREE* shipping on qualifying offers. Learning Perl: Making Easy Things Easy and Hard Things Possible

09:58пожаловаться #17

A

Alexey Myshkin in use Perl or die;

gibzer

Как сделать, чтобы при сплите получалось ровно столько значений, сколько задано в лимите?
То есть я хочу получить тут
perl -M'Data::Dumper' -e '@t = split(/=/, "ab", 2); print Dumper(\@t);'
вместо

$VAR1 = [
          'ab'
        ];

такое

$VAR1 = [
          'ab',
          undef
        ];

perl -MData::Dumper -E '@a=(1);push @a,(undef) x (6-length(@a));say Dumper \@a'

11:42пожаловаться #18

SZ

Sergey Zhmylove in use Perl or die;

Alexey Myshkin

perl -MData::Dumper -E '@a=(1);push @a,(undef) x (6-length(@a));say Dumper \@a'

Плохой вариант

11:42пожаловаться #19

A

Alexey Myshkin in use Perl or die;

Sergey Zhmylove

Плохой вариант

Плохой ответ