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Difference between “read commited” and “repeatable read”
...ame data again, it will find the previously read data in place, unchanged, and available to read.
The next isolation level, serializable, makes an even stronger guarantee: in addition to everything repeatable read guarantees, it also guarantees that no new data can be seen by a subsequent read.
Sa...
Why do we need virtual functions in C++?
I'm learning C++ and I'm just getting into virtual functions.
26 Answers
26
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Qt 5.1.1: Application failed to start because platform plugin “windows” is missing
...er people by directly providing the solution. This should not be forgotten and so far my answer helped a lot of people. Therefore my question is definitely not a duplicate. By the way: The accepted answer within the provided link on top does not solve the problem !
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Suppressing “is never used” and “is never assigned to” warnings in C#
...g restore 0169
To suppress warnings for "Field XYZ is never assigned to, and will always have its default value XX", you do this:
#pragma warning disable 0649
... field declaration
#pragma warning restore 0649
To find such warning numbers yourself (ie. how did I know to use 0169 and 0649), you ...
How do I debug an MPI program?
I have an MPI program which compiles and runs, but I would like to step through it to make sure nothing bizarre is happening. Ideally, I would like a simple way to attach GDB to any particular process, but I'm not really sure whether that's possible or how to do it. An alternative would be having ea...
How to know if two arrays have the same values
...have these two arrays: one is filled with information from an ajax request and another stores the buttons the user clicks on. I use this code (I filled with sample numbers):
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Find and replace strings in vim on multiple lines
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The :&& command repeats the last substitution with the same flags. You can supply the additional range(s) to it (and concatenate as many as you like):
:6,10s/<search_string>/<replace_string>/g | 14,18&&
If you have...
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
While most apple documents are very well written, I think ' Event Handling Guide for iOS ' is an exception. It's hard for me to clearly understand what's been described there.
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Could not load file or assembly or one of its dependencies
...ce the ServiceLocator you should provide it with the old version of Unity, and that makes the problem.
May be the output folder where all projects build their assemblies, has an old version of unity.
You can use FusLogVw to find out who is loading the old assemblies, just define a path for the log...
How to use Boost in Visual Studio 2010
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While Nate's answer is pretty good already, I'm going to expand on it more specifically for Visual Studio 2010 as requested, and include information on compiling in the various optional components which requires external libraries.
If you are using headers only libraries, then all yo...