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List comprehension: Returning two (or more) items for each item
...I used to find them a little confusing because I kept trying to invert the order.
– DSM
Aug 8 '12 at 17:07
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Why does jQuery or a DOM method such as getElementById not find the element?
...d scripts are (generally) executed as they're encountered. This means that order matters. Typically, scripts can't find elements which appear later in the markup because those elements have yet to be added to the DOM.
Consider the following markup; script #1 fails to find the <div> while scri...
What is the rationale for all comparisons returning false for IEEE754 NaN values?
...ly exclusive relations are possible: less than, equal, greater than, and unordered. The last case arises when at least one operand is NaN. Every NaN shall compare unordered with everything, including itself.
As far as writing extra code to handle NaNs goes, it is usually possible (though not alway...
How does the C code that prints from 1 to 1000 without loops or conditional statements work?
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How do I close a connection early?
...ogle.com');
ob_end_flush();flush();//really send content, can't change the order:1.ob buffer to normal buffer, 2.normal buffer to output
//continue do something on server side
ob_start();
sleep(5);//the user won't wait for the 5 seconds
echo 'for diyism';//user can't see this
file_put_contents('/tm...
What is the difference between const int*, const int * const, and int const *?
...ever, to me it seems kind of backwards to avoid a nice language feature in order to keep using an exceptional syntactical rule (about "const" placement), rather than avoiding using the exceptional syntactic rule so you can safely make use of this language feature.
– T.E.D.
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Default argument values in JavaScript functions [duplicate]
...possible to assign a param the falsy value passed as the argument.
So, in order to handle only undefined values explicitly, the preferred approach would be,
function C(a, b) {
a = typeof a === 'undefined' ? DEFAULT_VALUE_A : a;
b = typeof b === 'undefined' ? DEFAULT_VALUE_B : b;
}
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UITapGestureRecognizer - single tap and double tap
... I just needed to add tapCount=0 on each handler (singleTap, doubleTap) in order to be sure that following touches are recognized as well.
– Sirio
Aug 20 '16 at 14:31
add a co...
How to use ADB to send touch events to device using sendevent command?
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In order to do a particular action (for example to open the web browser), you need to first figure out where to tap. To do that, you can first run:
adb shell getevent -l
Once you press on the device, at the location that you...
Clean ways to write multiple 'for' loops
...ch3d(B, [](double i){ std::cout << i << std::endl; });
}
In order to make it N-ary we need some template magic. First of all we should create SFINAE structure to distinguish whether this value or container. The default implementation for values, and specialisations for arrays and each...