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Programming with white text on black background?
...using an old CRT screen. An LCD screen is back-lit and the liquid crystals blocks the light, so it uses the same amount of energy (or even slightly more) when the screen is black.
– Guffa
Jun 6 '10 at 17:50
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Array include any value from another array?
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@RyanFrancis, docs: any?: The method returns true if the block ever returns a value other than false or nil. empty?: Returns true if self contains no elements.
– Nakilon
Jul 15 '14 at 22:40
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What is the difference between lock and Mutex?
...that the lock will be released when an exception happens inside the lock's block.
That's because the lock uses monitors under the hood and is implemented this way:
object __lockObj = x;
bool __lockWasTaken = false;
try
{
System.Threading.Monitor.Enter(__lockObj, ref __lockWasTaken);
//...
using facebook sdk in Android studio
...sdk as dependency to module: edit build.gradle and add within
dependencies block: compile
project(':facebook-android-sdk:facebook')
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Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
...d removed, but it did get rid of the package, which was the thing that was blocking me from reinstalling it.
– JMD
Jan 27 '17 at 0:00
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The application may be doing too much work on its main thread
...u should prefer apply() method instead of commit(). apply() method can not block UI. You can look from here developer.android.com/training/data-storage/shared-preferences
– Emre Gürses
May 25 at 13:43
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How to unit test abstract classes: extend with stubs?
...of complex objects.
The key to extensible testable code is small building blocks and independent wiring.
Updated : How to handle mixtures of both?
It is possible to have a base class performing both of these roles... ie: it has a public interface, and has protected helper methods. If this is th...
Getting URL hash location, and using it in jQuery
...on
document.getElementById(location.hash.substring(1)).style.display = 'block'
Hope this saves you some time.
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size_t vs. uintptr_t
...but the pointers themselves are a 64-bit data type. The largest contiguous block of memory you could reasonably address would be 48-bit, so I have to imagine SIZE_MAX should not be 2**64. This is using flat addressing, mind you; no segmentation is necessary in order to have a mismatch between SIZE_M...
Tooltips for cells in HTML table (no Javascript)
...;
left:20px;
}
.CellWithComment:hover span.CellComment{
display:block;
}
<table id="MyTable">
<caption>Cell 1,2 Has a Comment</caption>
<thead>
<tr>
<td>Heading 1</td>
<td>Heading 2</td>
<td>Head...