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Regular expression for letters, numbers and - _

... To actually cover your pattern, i.e, valid file names according to your rules, I think that you need a little more. Note this doesn't match legal file names from a system perspective. That would be system dependent and more libera...
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Get class name of django model

... Django models are derived from the ModelBase, which is the Metaclass for all models. share | improve this answer | follow | ...
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How to set the JDK Netbeans runs on?

...\netbeans.conf Change the following line to point it where your java installation is : netbeans_jdkhome="C:\Program Files\Java\jdk1.7xxxxx" You may need Administrator privileges to edit netbeans.conf share | ...
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What does the caret operator (^) in Python do?

...his way: 1000 # 8 (binary) 0011 # 3 (binary) ---- # APPLY XOR ('vertically') 1011 # result = 11 (binary) share | improve this answer | follow | ...
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RE error: illegal byte sequence on Mac OS X

...t a valid UTF-8 char. Note that, by contrast, GNU sed (Linux, but also installable on macOS) simply passes the invalid byte through, without reporting an error. Using the formerly accepted answer is an option if you don't mind losing support for your true locale (if you're on a US system and you ne...
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Force IE compatibility mode off using tags

I am doing work for a client who forces compatibility mode on all intranet sites. I was wondering if there is a tag I can put into my HTML that forces compatibility mode off. ...
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Get the client IP address using PHP [duplicate]

... I usually don't like nested ternaries, but I really like it in this case... – Charles Harmon Jul 18 '14 at 20:49 ...
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Is errno thread-safe?

...t errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ? ...
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Python constructors and __init__

Why are constructors indeed called "Constructors"? What is their purpose and how are they different from methods in a class? ...
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Is there a benefit to defining a class inside another class in Python?

What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right? ...