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Why can't I forward-declare a class in a namespace using double colons?
Why do I have to do this?:
5 Answers
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Getting a random value from a JavaScript array
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
How do I select a merge strategy for a git rebase?
git-rebase man page mentions -X<option> can be passed to git-merge . When/how exactly?
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Why does PostgreSQL perform sequential scan on indexed column?
Very simple example - one table, one index, one query:
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Object.getOwnPropertyNames vs Object.keys
What's the difference between Object.getOwnPropertyNames and Object.keys in javascript? Also some examples would be appreciated.
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Foreign Key to non-primary key
I have a table which holds data, and one of those rows needs to exist in another table. So, I want a foreign key to maintain referential integrity.
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How to take screenshot of a div with JavaScript?
I am building something called the "HTML Quiz". It's completely ran on JavaScript and it's pretty cool.
10 Answers
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C++ Double Address Operator? (&&)
I'm reading STL source code and I have no idea what && address operator is supposed to do. Here is a code example from stl_vector.h :
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Cross browser JavaScript (not jQuery…) scroll to top animation
I'm looking for a simple, cross-browser "scroll to top" animation I can apply to a link. I don't want to require a JS library such as jQuery/Moo, etc.
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