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How do I add options to a DropDownList using jQuery?
... a DocumentFragment instead of modifying the DOM many times unnecessarily. For only a handful of options, I'd say it's not worth it though.
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DocumentFragment is good option for speed enhancement, but we cannot create option elem...
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...hould get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their meaning in the corresponding man page. These will usually be described as "exit status" and may have their own section.
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.NET 4.0 has a new GAC, why?
...embly\ is the new GAC . Does it mean now we have to manage two GACs, one for .NET 2.0-3.5 applications and the other for .NET 4.0 applications?
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Unable to generate an explicit migration in entity framework
...ed migration in your application and it requires running Update-Database before you can add another migration.
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
...bugs.sun.com/bugdatabase/view_bug.do?bug_id=7187821
Refer to this thread for debugging launcher issues.
Please also be aware that GUI applications on Mac have no access to your Terminal environment. If you've defined some environment variables that work fine in Terminal, other applications that y...
PHP Session Security
What are some guidelines for maintaining responsible session security with PHP? There's information all over the web and it's about time it all landed in one place!
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How to 'bulk update' with Django?
...e it won't be triggered).
No django signals will be emitted.
You can't perform an .update() on a sliced QuerySet, it must be on an original QuerySet so you'll need to lean on the .filter() and .exclude() methods.
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What's the yield keyword in JavaScript?
...plain me (or recommend a site that explains) its usage and what it is used for?
14 Answers
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How to execute a raw update sql with dynamic binding in rails
...could try accessing the underlying connection and using it's methods, e.g. for MySQL:
st = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st.close
I'm not sure if there are other ramifications to doing this (connections lef...
How to copy an object in Objective-C
...erence types, there are two notions of "copy". I'm sure you know them, but for completeness.
A bitwise copy. In this, we just copy the memory bit for bit - this is what NSCopyObject does. Nearly always, it's not what you want. Objects have internal state, other objects, etc, and often make assumpt...