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What is std::move(), and when should it be used?
...ct, leaving the moved object in an moved from state, therefore not copying all the data. This would be C++-valid.
Try googling for move semantics, rvalue, perfect forwarding.
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How can I get the current language in Django?
...t: Returns None if translations are temporarily deactivated (by deactivate_all() or when None is passed to override()). Before Django 1.8, get_language() always returned LANGUAGE_CODE when translations were deactivated.
– Pieter
Jan 3 '17 at 13:11
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X-Frame-Options Allow-From multiple domains
...olicy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors directive.
frame-ancestors supports multiple domains and even wildcards, for example:
Content-Security-Policy: frame-ancestors 'self' example.com *.example.net ...
Why are const parameters not allowed in C#?
It looks strange especially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. ...
How to find out element position in slice?
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this does not find the original index; rather it loses all the indexes by re-ordering them
– newacct
Nov 29 '11 at 20:16
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how to listen to N channels? (dynamic select statement)
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Maybe it's my incompetency, but I found this pattern really hard to work with when you are sending & receiving complex structures through the channel. Passing a shared "aggregate" channel, as Tim Allclair said, was much easier in my case.
– Bora M. Alper...
How efficient can Meteor be while sharing a huge collection among many clients?
... which watches the
database for changes; and the merge box, which combines all of a
client's active subscriptions and sends them out over the network to the
client.
Publish functions
Each time a Meteor client subscribes to a collection, the server runs a
publish function. The publish function's j...
Benefits of prototypal inheritance over classical?
So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the li...
What does the explicit keyword mean?
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The compiler is allowed to make one implicit conversion to resolve the parameters to a function. What this means is that the compiler can use constructors callable with a single parameter to convert from one type to another in order to get t...
Optimise PostgreSQL for fast testing
...ta-integrity-protection and crash-safety stuff, giving it permission to totally trash your data if you lose power or have an OS crash.
Needless to say, you should never enable fsync=off in production unless you're using Pg as a temporary database for data you can re-generate from elsewhere. If and ...