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What's the Android ADB shell “dumpsys” tool and what are its benefits?
I'm looking for the full list of ADB shell dumpsys commands with a full explanation of all of the commands.
4 Answers
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Adding dictionaries together, Python [duplicate]
I have two dictionaries and I'd like to be able to make them one:
6 Answers
6
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Android - startActivityForResult immediately triggering onActivityResult
... call startActivityForResult(intent, ACTIVITY_TYPE) , and they are all working but one.
13 Answers
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Is there a “not equal” operator in Python?
...See comparison operators. For comparing object identities, you can use the keyword is and its negation is not.
e.g.
1 == 1 # -> True
1 != 1 # -> False
[] is [] #-> False (distinct objects)
a = b = []; a is b # -> True (same object)
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Is there a simple, elegant way to define singletons? [duplicate]
...ways to define singletons in Python. Is there a consensus opinion on Stack Overflow?
21 Answers
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Screenshot Apps for iPhone simulator [closed]
I was wondering if there are any good recommendations on apps that takes screenshots of the iPhone simulator. I've tried apps like iPhone screenshot cropper but I'm looking for something that will allow me to make larger images. For example large enough to put on a poster. Any suggestions?
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How to get element by class name? [duplicate]
...n instance of HTMLCollection). At any rate: the return value is an array-like object:
var y = document.getElementsByClassName('foo');
var aNode = y[0];
If, for some reason you need the return object as an array, you can do that easily, because of its magic length property:
var arrFromList = Arra...
Capturing TAB key in text box [closed]
I would like to be able to use the Tab key within a text box to tab over four spaces. The way it is now, the Tab key jumps my cursor to the next input.
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Make UINavigationBar transparent
How do you make a UINavigationBar transparent ? Though I want its bar items to remain visible.
18 Answers
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Determine the number of NA values in a column
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You're over-thinking the problem:
sum(is.na(df$col))
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