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PG::ConnectionBad - could not connect to server: Connection refused

... #2 is a great suggestion: "Check server.log". My error was actually caused by upgrading to Yosemite, the server log said: FATAL: could not open directory "pg_tblspc": No such file or directory. This answer helped me with that problem stackoverflow.com/questions/25970132/… ...
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PHP memory profiling

...r example, to see how much memory my data is using, and/or which function calls are allocating the most memory. 4 Answers ...
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What is the maximum possible length of a query string?

...::Daemon module will encounter a 16,384 byte limit on the combined size of all HTTP request headers. This does not include POST-method form data, file uploads, etc., but it does include the URL. In practice this resulted in a 413 error when a URL was significantly longer than 8,000 characters. This ...
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What does the restrict keyword mean in C++?

... A restrict-qualified pointer (or reference)... ! ...is basically a promise to the compiler that for the scope of the pointer, the target of the pointer will only be accessed through that pointer (and pointers copied from it). In C++ compilers that support it i...
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Is it possible to for SQL Output clause to return a column not being inserted?

...ctice DROP TABLE PracticeReportOption More reading, and the source of all that I know on the subject is Here share | improve this answer | follow | ...
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Is python's sorted() function guaranteed to be stable?

...s what is expected in this case? Python is going to compare tuples through all elements by default, not just the first "primary" one. If you only want to sort on the first element, you can pass the key parameter explicitly. – Matias Grioni Nov 30 '17 at 3:52 ...
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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?

... Arthur Tacca 5,80011 gold badge2121 silver badges4141 bronze badges answered Nov 5 '16 at 17:36 Ludovic AubertLudovic A...
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Unicode character in PHP string

... the \uxxxx Unicode syntax so you can use json_decode to work on an artifically created JSON string representation. I changed the wording though to have that clarified. – Stefan Gehrig May 19 '11 at 12:48 ...
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Character reading from file in Python

... print repr(line) It's also possible to open files in update mode, allowing both reading and writing: with codecs.open('test', encoding='utf-8', mode='w+') as f: f.write(u'\u4500 blah blah blah\n') f.seek(0) print repr(f.readline()[:1]) EDIT: I'm assuming that your intended go...
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JetBrains / IntelliJ keyboard shortcut to collapse all methods

...ut for any JetBrains IDE (since the shortcut would likely be shared across all of them) to collapse all the methods / functions so that only the method signatures are shown? ...