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PG::ConnectionBad - could not connect to server: Connection refused
... was started (even though it isn't running, it just didn't get to shutdown and delete the PID).
To fix it remove/rename the PID file. Find the postgres data directory. On macOS using homebrew it is in /usr/local/var/postgres/,
or /usr/local/var/log/ other systems it might be /usr/var/postgres/.
T...
Pure virtual function with implementation
My basic understanding is that there is no implementation for a pure virtual function, however, I was told there might be implementation for pure virtual function.
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Deleting DataFrame row in Pandas based on column value
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If I'm understanding correctly, it should be as simple as:
df = df[df.line_race != 0]
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When should I use Arrow functions in ECMAScript 6?
...ght about code style in the context of the upcoming ECMAScript 6 (Harmony) and who have already worked with the language.
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Can I obtain method parameter name using Java reflection?
... etc.
use a combination of the above - the former for non-primitive types, and the latter for primitive types.
don't show argument names at all - just the types.
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How to make an introduction page with Doxygen
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Have a look at the mainpage command.
Also, have a look this answer to another thread: How to include custom files in Doxygen. It states that there are three extensions which doxygen classes as additional documentation files: .dox, .txt and .doc. Files with...
How can I wrap text in a label using WPF?
I have a TextBox and a Label. After clicking a button, I execute the following code:
10 Answers
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How do I get the currently displayed fragment?
I am playing with fragments in Android.
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Download file of any type in Asp.Net MVC using FileResult?
...uld try that, but what goes into the byte[] array?
– Anders
Aug 31 '10 at 15:40
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Never mind, I t...
What is the difference between UTF-8 and ISO-8859-1?
What is the difference between UTF-8 and ISO-8859-1 ?
8 Answers
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