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How do I verify that an Android apk is signed with a release certificate?
...ols/24.0.3/apksigner.bat. Only for build tools v. 24.0.3 and higher.
Also read google docs: https://developer.android.com/studio/command-line/apksigner.html
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How to make an ng-click event conditional?
...pan ng-click="(isDisabled) || clicked()">Do something</span>
OR read it as
<span ng-click="(if this value is true function clicked won't be called. and if it's false the clicked will be called) || clicked()">Do something</span>
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Android: Background Image Size (in Pixel) which Support All Devices
... in all devices. For understanding multiple supporting screens you have to read
http://developer.android.com/guide/practices/screens_support.html
xxxhdpi: 1280x1920 px
xxhdpi: 960x1600 px
xhdpi: 640x960 px
hdpi: 480x800 px
mdpi: 320x480 px
ldpi: 240x320 px
...
Calling virtual functions inside constructors
...C++ FAQ Lite covers this in section 23.7 in pretty good detail. I suggest reading that (and the rest of the FAQ) for a followup.
Excerpt:
[...] In a constructor, the virtual call mechanism is disabled because overriding from derived classes hasn’t yet happened. Objects are constructed from the b...
Python integer division yields float
...
The accepted answer already mentions PEP 238. I just want to add a quick look behind the scenes for those interested in what's going on without reading the whole PEP.
Python maps operators like +, -, * and / to special functions, such that e.g. a...
Understanding the difference between Object.create() and new SomeFunction()
...The rest of the answers are just confusing, because apparently nobody else reads the definition of new either. ;)
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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
...e/php_equality_charts
Guru Meditation
Those who wish to keep their sanity, read no further because none of this will make any sense, except to say that this is how the insanity-fractal, of PHP was designed.
NAN != NAN but NAN == true.
== will convert left and right operands to numbers if left is a...
Is returning by rvalue reference more efficient?
... ab, or do RVO to omit doing a move or copy altogether. I recommend you to read BoostCon09 Rvalue References 101 which explains the matter, and how (N)RVO happens to interact with this.
Your case of returning an rvalue reference would be a good idea in other occasions. Imagine you have a getAB() ...
Can I implement an autonomous `self` member type in C++?
...like
CLASS_WITH_SELF(Foo)
};
#define END_CLASS }; would probably help readability.
You could also take @Paranaix's Self and use it (it starts to get really hackish)
#define WITH_SELF(X) X : public Self<X>
class WITH_SELF(Foo) {
};
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Difference between InvariantCulture and Ordinal string comparison
...dicating irony don't seem to be as well-understood in the English language reading web as I would have assumed, I removed the "most important cultures" comment. After all, the BCL does not feature a CultureComparer which we could use to verify. For this table, the Danish culture(info) turned out to ...