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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
I'm using the PostgreSQL database for my Ruby on Rails application (on Mac OS X 10.9).
15 Answers
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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...t three days of my life tracking down a very strange bug where unordered_map::insert() destroys the variable you insert. This highly non-obvious behaviour occurs in very recent compilers only: I found that clang 3.2-3.4 and GCC 4.8 are the only compilers to demonstrate this "feature".
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Rails formatting date
I am posting a date to an API and the required format is as follows:
4 Answers
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PHP: exceptions vs errors?
Maybe I'm missing it somewhere in the PHP manual, but what exactly is the difference between an error and an exception? The only difference that I can see is that errors and exceptions are handled differently. But what causes an exception and what causes an error?
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How can I change my Cygwin home folder after installation?
I just installed Cygwin, and it looks like the home directory in the bash prompt is on my Z: drive. That's not where I want it.
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How can I take more control in ASP.NET?
I'm trying to build a very, very simple "micro-webapp" which I suspect will be of interest to a few Stack Overflow'rs if I ever get it done. I'm hosting it on my C# in Depth site, which is vanilla ASP.NET 3.5 (i.e. not MVC).
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Should I hash the password before sending it to the server side?
I noticed that most sites send the passwords as plain text over HTTPS to the server. Is there any advantage if instead of that I sent the hash of the password to the server? Would it be more secure?
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Apache and Node.js on the Same Server
...and it's non-blocking by definition. But the guy who I hired to write the program for file handling (saving, editing, renaming, downloading, uploading files, etc.), he wants to use apache. So, I must:
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Why use non-member begin and end functions in C++11?
...nd method for returning iterators for that container. However, C++11 has apparently introduced free functions called std::begin and std::end which call the begin and end member functions. So, instead of writing
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C char array initialization
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edited Jan 20 '15 at 18:53
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