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Android - How To Override the “Back” button so it doesn't Finish() my Activity?
...BACK.
You just need the following to catch the back key (Make sure not to call super in onBackPressed()).
Also, if you plan on having a service run in the background, make sure to look at startForeground() and make sure to have an ongoing notification or else Android will kill your service if it n...
Getting current directory in .NET web application
... HttpRuntime.AppDomainAppPath.
If you're in an HTTP request, you can also call Server.MapPath("~/Whatever").
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NSLog the method name with Objective-C in iPhone
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Method calls like [self doSomething:arg1 somethingElse:arg2] get converted into the C function call objc_msgSend(self, "doSomething:somethingElse:, arg1, arg2);. The second parameter of objc_msgSend() takes a char*. Remember that be...
What does functools.wraps do?
... def with_logging(*args, **kwargs):
print(func.__name__ + " was called")
return func(*args, **kwargs)
return with_logging
then when you say
@logged
def f(x):
"""does some math"""
return x + x * x
it's exactly the same as saying
def f(x):
"""does some math"""
...
Difference between passing array and array pointer into function in C
...lso appears within the [ and ] of the
array type derivation, then for each call to the function, the value of the corresponding
actual argument shall provide access to the first element of an array with at least as many
elements as specified by the size expression.
So, in short, any function param...
Case insensitive comparison NSString
...rth mentioning that in case when @"Some String" is received from any other call and happens to be nil, your if will give true as sending caseInsensitiveCompare to nil is valid and results in another nil which, in our case, compared with NSOrderedSame will return true (NSOrderedSame is defined as 0)....
Filter by process/PID in Wireshark
...
There's also Microsoft Message Analyzer which is basically Microsoft's version of Wireshark (and the sucessor to Network Monitor as I understand), but a little better integrated. In the column chooser, under 'Etw'->'EtwProviderMsg' there's a column for 'PID'. It works well!
...
NSObject +load and +initialize - What do they do?
...rride +initialize or +load. Documentation makes it clear these methods are called for you by the Objective-C runtime, but that's really all that is clear from the documentation of those methods. :-)
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Android: upgrading DB version and adding new table
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1. About onCreate() and onUpgrade()
onCreate(..) is called whenever the app is freshly installed. onUpgrade is called whenever the app is upgraded and launched and the database version is not the same.
2. Incrementing the db version
You need a constructor like:
MyOpenHel...
Proper usage of Optional.ifPresent()
...er> user = ...
user.ifPresent(this::doSomethingWithUser);
This is basically the same thing as
Optional<User> user = ...
user.ifPresent(new Consumer<User>() {
@Override
public void accept(User theUser) {
doSomethingWithUser(theUser);
}
});
The idea is that the ...