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Where do I use delegates? [closed]
...od it defines.
Based on this statement, a delegate is a function pointer and it defines what that function looks like.
A great example for a real world application of a delegate is the Predicate. In the example from the link, you will notice that Array.Find takes the array to search and then a p...
super() raises “TypeError: must be type, not classobj” for new-style class
...e = OldStyle()
>>> issubclass(instance.__class__, object)
False
and not (as in the question):
>>> isinstance(instance, object)
True
For classes, the correct "is this a new-style class" test is:
>>> issubclass(OldStyle, object) # OldStyle is not a new-style class
Fal...
How to change the status bar color in Android?
...t of all it's not a duplicate as in How to change the background color of android status bar
19 Answers
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dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib
...solutions worked. We discovered that there is an flag ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES (in earlier versions: "Embedded Content Contains Swift Code") in the Build Settings that needs to be set to YES. It was NO by default!
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What is “runtime”?
...fers to any library, framework, or platform that your code runs on.
The C and C++ runtimes are collections of functions.
The .NET runtime contains an intermediate language interpreter, a garbage collector, and more.
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Error: The 'brew link' step did not complete successfully
...ed to me when I missed the homebrew package's message about removing the standalone version first.
Assuming, like me, you've already broken node/npm by attempting the upgrade before knowing to npm uninstall npm -g first, you can rm -rf /usr/local/lib/node_modules/npm and then brew link node. This ...
How to check if Location Services are enabled?
I'm developing an app on Android OS. I don't know how to check if Location Services are enabled or not.
22 Answers
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Retrieving the output of subprocess.call() [duplicate]
...Popen() instead. Then you can pass subprocess.PIPE for the stderr, stdout, and/or stdin parameters and read from the pipes by using the communicate() method:
from subprocess import Popen, PIPE
p = Popen(['program', 'arg1'], stdin=PIPE, stdout=PIPE, stderr=PIPE)
output, err = p.communicate(b"input ...
Android studio using > 100% CPU at all times - no background processes appear to be running
I've noticed Android Studio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well.
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How to measure elapsed time in Python?
What I want is to start counting time somewhere in my code and then get the passed time, to measure the time it took to execute few function. I think I'm using the timeit module wrong, but the docs are just confusing for me.
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