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Is there a timeout for idle PostgreSQL connections?
...th <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other ...
HTTP Content-Type Header and JSON
...n't care what it is. The browser just returns you the data from the AJAX call. If you want to parse it as JSON, you need to do that on your own.
The header is there so your app can detect what data was returned and how it should handle it. You need to look at the header, and if it's application/...
What is the best way to force yourself to master vi? [closed]
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First of all, you may want to pick up Vim; it has a vastly superior feature set along with everything vi has.
That said, it takes discipline to learn. If you have a job and can't afford the productivity hit (without getting fired), I...
Can I set null as the default value for a @Value in Spring?
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This is really old, but you can use Spring EL now, e.g.
@Value("${stuff.value:#{null}}")
See this question.
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How to read the mode field of git-ls-tree's output
...ing 0 on the top lines (e.g. 0170000 instead of 170000), since it is 0 for all lines, why not just omit it?
– Ciro Santilli 郝海东冠状病六四事件法轮功
Aug 22 '14 at 7:47
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Record file copy operation with Git
...n (-C implies -M), and you can request more expensive copy detection among all files with --find-copies-harder or -C -C (which implies -C, which implies -M). See the git-diff manpage.
You can also configure git to always do rename detection by setting diff.renames to a boolean true value (e.g. true...
How to position a DIV in a specific coordinates?
... edited Apr 15 '16 at 14:16
allegutta
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answered Jul 23 '11 at 20:01
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Why does Math.Floor(Double) return a value of type Double?
...r is outside the range of long - so what would you expect to happen?
Typically you know that the value will actually be within the range of int or long, so you cast it:
double d = 1000.1234d;
int x = (int) Math.Floor(d);
but the onus for that cast is on the developer, not on Math.Floor itself. I...
How to increase scrollback buffer size in tmux?
...t (at least temporarily) changing history-limit (though show-option (especially in 1.7 and later) can help with retrieving the current value so that you restore it later).
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How is attr_accessible used in Rails 4?
... away from fat model, thin controller, etc, and towards thin models, and really bloated controllers. You have to write all this stuff for every instance, it doesn't read nicely, and nesting seems to be a pain. The old attr_accessible/attr_accessor in the model system wasn't broken, and didn't need...