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Can PostgreSQL index array columns?
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As the OP surmises, this doesn't actually index individual array values, but instead indexes the entire array. So, while this will help the query in question (see explain plan), this means you can't create unique constraints (easily) on individual ar...
Using python “with” statement with try-except block
...ot it wrong about "with" statement that it only reduces lines.
It actually does initialization and handle teardown.
In your case "with" does
open a file,
process its contents, and
make sure to close it.
Here is link for understanding "with" statement : http://effbot.org/zone/python-with-state...
ASP.NET_SessionId + OWIN Cookies do not send to browser
...ented by sealed class System.Web.HttpCookieCollection. This implementation does not wrap response Set-Cookie header directly but uses some optimizations and handful of internal notifications to manifest it's changed state to response object.
Then there is a point late in request lifetime where Http...
Block Comments in Clojure
...fore posting this comment... oh well, I'll leave it anyway in case someone does the same thing I did.
– paul
Jul 7 '11 at 0:39
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Function to clear the console in R and RStudio
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does not work for me. windows 7, R console. (r.exe).
– Knows Not Much
Feb 13 '15 at 22:14
8
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“rm -rf” equivalent for Windows?
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This doesn't delete files, like rm -rf does, and it also returns a non-zero value when the directory doesn't exist, so rd /s /q foo && echo "yay" will fail if directory "foo" doesn't exist.
– Dirk Gro...
How to empty/destroy a session in rails?
...you're probably better off using reset_session [than session.clear], as it does some other cleaning up beyond what session.clear does. Internally, reset_session calls session.destroy, which itself calls clear as well some other stuff.
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How to completely uninstall Visual Studio 2010?
...way Visual Studio. There still might be one: as far as it goes, formatting does a pretty good job.
– dan
Sep 26 '12 at 12:54
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Javascript - remove an array item by value [duplicate]
...exOf to check for the existence of an item in an array.
Note: IE < 9 does not support .indexOf() on arrays. If you want to make sure your code works in IE, you should use jQuery's $.inArray():
var tag_story = [1,3,56,6,8,90],
id_tag = 90,
position = $.inArray(id_tag, tag_story);
if (...
Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
...t all it's cracked up to be. In many cases it is clumsy and verbose and it doesn't really promote reusable code or modularity.
That is why the C++ community is today far more interested in generic programming, and why everyone are finally starting to realize that functional programming is quite cle...