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How to detect when cancel is clicked on file input?
...capture="camera" />
<input type="file" accept="video/*" capture="camcorder" />
This works out actually a lot better than I expected. It runs 10 trials by requesting a timer to be invoked in 25 milliseconds. It then measures how long it actually took to invoke, and if the average of 10 tri...
Mongodb Explain for Aggregation framework
...
Starting with MongoDB version 3.0, simply changing the order from
collection.aggregate(...).explain()
to
collection.explain().aggregate(...)
will give you the desired results (documentation here).
For older versions >= 2.6, you will need to use the explain option for ag...
Which is more efficient, a for-each loop, or an iterator?
....
the implementation of the iterator has to do at least 2 fields lookup in order to make hasNext() call figure the value: #1 get current count and #2 get total count
inside the body loop, there is another invokeInterface virtual call iter.next(so: go through all the classes and do method table looku...
How to get xdebug var_dump to show full object/array
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Logger slf4j advantages of formatting with {} instead of string concatenation
...and {@link #debug(String, Object, Object) two}
* arguments exist solely in order to avoid this hidden cost.</p>
*/
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
public void debug(String format, Object... arguments);
...
Unmarshaling nested JSON objects
...even if the simple cases look alike. The content of a XML tag is kinda:(An ordered map of sub-tags OR Text) AND an unordered map of attributes. JSON is much more like a Go struct. So mapping JSON to structs is much simpler: Just model the struct after your JSON.
– Volker
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Difference between add(), replace(), and addToBackStack()
...ck using addToBackStack() and then commit() to reflect. This is in reverse order with the current on top.
findFragmentByTag does this search for tag added by the add/replace
method or the addToBackStack method ?
If depends upon how you added the tag. It then just finds a fragment by its tag ...
Select + copy text in a TextView?
...diately, regardless of whether or not they select "Copy" from the menu. In order to copy only when the appropriate item was selected, you'd need to override onContextItemSelected() as well, or add a click handler to the menu item.
– Faisal
Jul 14 '11 at 17:19
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How to properly URL encode a string in PHP?
... web page includes a mailto link that lets them do that.
PHP code
// The order system generates some opaque token
$token = 'w%a&!e#"^2(^@azW';
// Here is a URL to redeem that token
$redeemUrl = 'https://httpbin.org/get?token=' . urlencode($token);
// Actual contents we want for the email
$su...
How to detect iPhone 5 (widescreen devices)?
...rientation.
So obviously, the previous code won't work out of the box.
In order to fix this, you can simply use the new nativeBounds property, instead of bounds, as it won't change with the orientation, and as it's based on a portrait-up mode.
Note that dimensions of nativeBounds is measured in pix...