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Data structure: insert, remove, contains, get random element, all at O(1)
...he value to be removed. Set A[i]=d, H[d]=i, decrease the size of the array by one, and remove value from H.
contains(value): return H.contains(value)
getRandomElement(): let r=random(current size of A). return A[r].
since the array needs to auto-increase in size, it's going to be amortize O(1) to ...
Minimum and maximum date
...r backward, from 01 January, 1970 UTC.
The actual range of times supported by ECMAScript Date objects is slightly smaller: exactly –100,000,000 days to 100,000,000 days measured relative to midnight at the beginning of 01 January, 1970 UTC. This gives a range of 8,640,000,000,000,000 milliseconds ...
Avoid Android Lint complains about not-translated string
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I don't know how to ignore all the file, but you can do it string by string using:
<string name="hello" translatable="false">hello</string>
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.NET 4.0 has a new GAC, why?
...ding an assembly from this shared GAC, could get .NET 2.0 assemblies, thereby breaking the .NET 1.1 application
The CLR version used for both .NET
Framework 2.0 and .NET Framework 3.5
is CLR 2.0. As a result of this, there
was no need in the previous two
framework releases to split the GAC.
The prob...
Multiple inheritance/prototypes in JavaScript
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Multiple inheritance can be achieved in ECMAScript 6 by using Proxy objects.
Implementation
function getDesc (obj, prop) {
var desc = Object.getOwnPropertyDescriptor(obj, prop);
return desc || (obj=Object.getPrototypeOf(obj) ? getDesc(obj, prop) : void 0);
}
function mult...
Prevent HTML5 video from being downloaded (right-click saved)?
... That would prevent your regular skiddie from blatantly ripping your video by right clicking and Save As. But then they could just disable JS and get around this or find the video source via the browser's debugger. Plus this is bad UX. There are lots of legitimate things in a context menu than just ...
What is the difference between atan and atan2 in C++?
...nd if it is negative, it could come from the second or fourth quadrant. So by convention, atan() returns an angle from the first or fourth quadrant (i.e. -π/2 <= atan() <= π/2), regardless of the original input to the tangent.
In order to get back the full information, we must not use the r...
Set android shape color programmatically
...tate() on the drawables before modifying them if they are used elsewhere. (By default, drawables loaded from XML share the same state.)
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onNewIntent() lifecycle and registered listeners
...nt
setIntent(intent);
}
With all setup logic happening in onResume() by utilizing getIntent().
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SQL- Ignore case while searching for a string
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Like to know does your answer has any performance issue by converting a column value to UPPER or LOWER case then using the LIKE to search ?
– shaijut
Aug 29 '18 at 9:27
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