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Transaction isolation levels relation with locks on table
... and commit/rollback (depending on results). B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in the table while writing on it. This means A writes data (uncommitted) an...
Is it possible to define more than one function per file in MATLAB, and access them from outside tha
...hat m-file is called. It is not required that the main function have the same name as the m-file, but for clarity it should. When the function and file name differ, the file name must be used to call the main function.
All subsequent functions in the m-file, called local functions (or "subfunctions...
Understanding events and event handlers in C#
...tes. In C#, you can think of a delegate as a pointer (or a reference) to a method. This is useful because the pointer can be passed around as a value.
The central concept of a delegate is its signature, or shape. That is (1) the return type and (2) the input arguments. For example, if we create a d...
The Definitive C Book Guide and List
...rning
This is a list of random books of diverse quality. In the view of some people (with some justification), it is no longer a list of recommended books. Some of the listed books contain blatantly incorrect statements or teach wrong/harmful practices. People who are aware of such books can edit ...
Why isn't String.Empty a constant?
...ler doesn't mark this as a
literal.
Marking this as a literal would mean
that it doesn't show up as a field
which we can access from native.
I found this information from this handy article at CodeProject.
shar...
What is private bytes, virtual bytes, working set?
I am trying to use the perfmon windows utility to debug memory leaks in a process.
4 Answers
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Would it be beneficial to begin using instancetype instead of id?
...d autocomplete better.
Only use it where it makes sense of course (i.e. a method that is returning an instance of that class); id is still useful.
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C# 5 async CTP: why is internal “state” set to 0 in generated code before EndAwait call?
...n my own, but only after Lucian Wischik from the VB part of the team confirmed that there really is a good reason for it. Many thanks to him - and please visit his blog, which rocks.
The value 0 here is only special because it's not a valid state which you might be in just before the await in a nor...
Traits vs. interfaces
...
An interface defines a set of methods that the implementing class must implement.
When a trait is use'd the implementations of the methods come along too--which doesn't happen in an Interface.
That is the biggest difference.
From the Horizontal Reuse f...
Multi-key dictionary in c#? [duplicate]
I know there isn't one in the BCL but can anyone point me to a good opensource one?
16 Answers
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