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What special characters must be escaped in regular expressions?
...hich you mustn't escape indeed depends on the regex flavor you're working with.
For PCRE, and most other so-called Perl-compatible flavors, escape these outside character classes:
.^$*+?()[{\|
and these inside character classes:
^-]\
For POSIX extended regexes (ERE), escape these outside char...
proper hibernate annotation for byte[]
I have an application using hibernate 3.1 and JPA annotations. It has a few objects with byte[] attributes (1k - 200k in size). It uses the JPA @Lob annotation, and hibernate 3.1 can read these just fine on all major databases -- it seems to hide the JDBC Blob vendor peculiarities (as it should do...
How to exit git log or git diff [duplicate]
I'm trying to learn Git with the help of Git Immersion .
There's one thing that frustrates me whenever I use git log or git diff :
...
Right to Left support for Twitter Bootstrap 3
There have been questions about this before:
Twitter Bootstrap CSS that support from RTL languages
10 Answers
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Character reading from file in Python
.../unicode
Reading Unicode from a file is therefore simple:
import codecs
with codecs.open('unicode.rst', encoding='utf-8') as f:
for line in f:
print repr(line)
It's also possible to open files in update mode, allowing both reading and writing:
with codecs.open('test', encoding='utf-...
Equivalent of LIMIT and OFFSET for SQL Server?
In PostgreSQL there is the Limit and Offset keywords which will allow very easy pagination of result sets.
16 Answers
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Django ModelForm: What is save(commit=False) used for?
Why would I ever use save(commit=False) instead of just creating a form object from the ModelForm subclass and running is_valid() to validate both the form and model?
...
What's the best way to model recurring events in a calendar application?
...hat needs to support recurring events, but all the solutions I've come up with to handle these events seem like a hack. I can limit how far ahead one can look, and then generate all the events at once. Or I can store the events as repeating and dynamically display them when one looks ahead on the ca...
How do I get the find command to print out the file size with the file name?
...If you have many files (say, over a thousand) you better optimize that by either: find . -name '*.ear' -exec ls -lh {} + \; (GNU extension) or find . -name '*.ear' -print0 | xargs -0 ls -lh. Also you may like to add -type f if you're only interested in files (or add -d to ls if you want directo...
How do I use variables in Oracle SQL Developer?
...did:
define value1 = 'sysdate'
SELECT &&value1 from dual;
Also it's the slickest way presented here, yet.
(If you omit the "define"-part you'll be prompted for that value)
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