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How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
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SCOPE_IDENTITY() for GUIDs?
...key mentions, you should be using NewSequentialID() to generate your GUIDs and not NewID().
– Rob Garrison
Oct 2 '09 at 16:32
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Java Reflection Performance
...operations have slower performance than their non-reflective counterparts, and should be avoided in sections of code which are called frequently in performance-sensitive applications.
Here's a simple test I hacked up in 5 minutes on my machine, running Sun JRE 6u10:
public class Main {
publ...
Why git can't remember my passphrase under Windows
...or as instructed by your Git host.
Again, if you have not already done so, convert your key for use with PuTTY's pageant.exe using puttygen.exe. Instructions are in PuTTY's documentation, in this helpful guide, and several other places in cyberspace.
Run PuTTY's pageant.exe, open your .ppk file ("Ad...
SqlException from Entity Framework - New transaction is not allowed because there are other threads
...eadache too. I almost fell off my chair when I found the problem! I understand the technical reasons behind the problem, but this isn't intuitive and it isn't helping the developer to fall into the "pit of success" blogs.msdn.com/brada/archive/2003/10/02/50420.aspx
– Doctor Jon...
What is the difference between an interface and abstract class?
What exactly is the difference between an interface and abstract class?
37 Answers
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How to change identity column values programmatically?
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You need to
set identity_insert YourTable ON
Then delete your row and reinsert it with different identity.
Once you have done the insert don't forget to turn identity_insert off
set identity_insert YourTable OFF
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C++: What is the size of an object of an empty class?
... It surely could not be 0 bytes since it should be possible to reference and point to it like any other object. But, how big is such an object?
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How to get number of rows using SqlDataReader in C#
...defined except for one that states to do a while loop with Read() method and increment a counter.
6 Answers
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
I'm reading some lecture notes of my C++ lecturer and he wrote the following:
23 Answers
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