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How to overload std::swap()
...ns are seen, the more specific one (this one) will be chosen when swap is called without qualification.
– Dave Abrahams
Apr 17 '11 at 14:24
5
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Why does Internet Explorer not send HTTP post body on Ajax call after failure?
...en a new connection. This can have a significant performance impact, especially on high latency networks.
The issue is triggered easily if Ajax requests are made in rapid succession. For example, we make Ajax requests every 100ms and then the network status changes, the error is easy to reproduce. A...
Database cluster and load balancing
What is database clustering? If you allow the same database to be on 2 different servers how do they keep the data between synchronized. And how does this differ from load balancing from a database server perspective?
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Override compile flags for single files
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It would be preferable to use add_compile_options
add_compile_options(-Wall -Weffc++ -pedantic -std=c++0x)
or for CMake versions < 3.0 to do something more like:
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Weffc++ -pedantic -std=c++0x")
In response to further questions in the comment...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
... first key, then the second key if the first one is equal, etc. This order allows for partial searches where only the first keys are specified:
phonebook pb;
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// look for all Whites
std::pair<phonebook::iterator,phonebook::iterator> p=
pb.equal_range(boost::make_tuple(std::string("Whi...
MySQL, better to insert NULL or empty string?
...are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
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C# version of java's synchronized keyword?
... be thread-safe. Use YAGNI: only apply thread-safety when you know you actually are going to use it (and test it).
For the method-level stuff, there is [MethodImpl]:
[MethodImpl(MethodImplOptions.Synchronized)]
public void SomeMethod() {/* code */}
This can also be used on accessors (properties ...
How to make shallow git submodules?
Is it possible to have shallow submodules? I have a superproject with several submodules, each with a long history, so it gets unnecessarily big dragging all that history.
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Hide options in a select list using jQuery
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You cannot do this x-browser. If I recall ie has issues. The easiest thing to do is keep a cloned copy of the select before you remove items, this allows you to easily remove and then append the missing items back.
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Any difference between First Class Function and High Order Function
...s the definitions are certainly subjective and open to debate, but I personally prefer to think that C only supports higher order functions (via function pointers). However, first-class functions are not supported because functions are inferior to other value types like int or char, in the sense tha...