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How do I find duplicates across multiple columns?
So I want to do something like this sql code below:
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In C++, is it still bad practice to return a vector from a function?
...this style now acceptable in C++0x if the class has a move constructor, or do C++ programmers consider it weird/ugly/abomination?
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When and why are database joins expensive?
I'm doing some research into databases and I'm looking at some limitations of relational DBs.
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Repeat a task with a time delay?
...se the code was exactly what I was looking for. Trying to think what I can do to return the favour. At the very least youve won my respect. Kind Regards Aubrey Bourke.
– aubreybourke
Dec 16 '11 at 12:13
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
...e to get mine working from the command-line switch but I have been able to do it just by setting my HTTP_PROXY environment variable. (Note that case seems to be important). I have a batch file that has a line like this in it:
SET HTTP_PROXY=http://%USER%:%PASSWORD%@%SERVER%:%PORT%
I set the four ...
How do I move to end of line in Vim?
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Just the $ (dollar sign) key. You can use A to move to the end of the line and switch to editing mode (Append). To jump the last non-blank character, you can press g then _ keys.
The opposite of A is I (Insert mode at beginning of lin...
How to prevent favicon.ico requests?
I don't have a favicon.ico, but my browser always makes a request for it.
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How are software license keys generated?
... it a message digest? If so, what data would they be hashing? What methods do developers employ to make it difficult for crackers to build their own key generators? How are key generators made?
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What is a stack trace, and how can I use it to debug my application errors?
...omething bad happened
at com.example.myproject.OpenSessionInViewFilter.doFilter(OpenSessionInViewFilter.java:60)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.example.myproject.ExceptionHandlerFilter.doFilter(ExceptionHandlerFilter.java...
Change a Git remote HEAD to point to something besides master
How do I set a Git remote's HEAD reference to point to something besides "master"?
11 Answers
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