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What's the difference between a proxy server and a reverse proxy server? [closed]
...r acting on the behalf of another computer.
For the purposes of accessibility, I will limit my discussion to web proxies - however, the idea of a proxy is not limited to websites.
FORWARD proxy
Most discussion of web proxies refers to the type of proxy known as a "forward proxy."
The proxy event...
Update Row if it Exists Else Insert Logic with Entity Framework
...one have suggestions on the most efficient way to implement "update row if it exists else insert" logic using Entity Framework?
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How to get the unique ID of an object which overrides hashCode()?
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System.identityHashCode(yourObject) will give the 'original' hash code of yourObject as an integer. Uniqueness isn't necessarily guaranteed. The Sun JVM implementation will give you a value which is related to the original memory address...
How do you dismiss the keyboard when editing a UITextField
I know that I need to tell my UITextField to resign first responder when I want to dismis the keyboard, but I'm not sure how to know when the user has pressed the "Done" key on the keyboard. Is there a notification I can watch for?
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iphone Core Data Unresolved error while saving
...a when trying to save
but the problem that the error is not reproducible ( it appears at different times when doing different tasks)
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Permanently add a directory to PYTHONPATH?
... whatever shell you're using (.profile or whatever, depending on your favorite shell) with a command which, again, depends on the shell in question; in Windows, you can do it through the system GUI for the purpose.
superuser.com may be a better place to ask further, i.e. for more details if you nee...
How do I define a method which takes a lambda as a parameter in Java 8?
...hods can be created as Lambda expressions and can be passed by reference (with a little work under the hood). There are plenty of examples online with lambdas being created and used with methods, but no examples of how to make a method taking a lambda as a parameter. What is the syntax for that?
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Function passed as template argument
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Yes, it is valid.
As for making it work with functors as well, the usual solution is something like this instead:
template <typename F>
void doOperation(F f)
{
int temp=0;
f(temp);
std::cout << "Result is " <...
How to source virtualenv activate in a Bash script
...e, you're loading the activate script into your active shell.
When you do it in a script, you load it into that shell which exits when your script finishes and you're back to your original, unactivated shell.
Your best option would be to do it in a function
activate () {
. ../.env/bin/activate
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How to find gaps in sequential numbering in mysql?
We have a database with a table whose values were imported from another system. There is an auto-increment column, and there are no duplicate values, but there are missing values. For example, running this query:
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