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Why use try {} finally {} with an empty try block?
... your processing
finishes even if your thread is
aborted in the middle by someone
calling Abort on your thread, you can
place all your code in the finally
block (the alternative is to write
code in the “catch” block to determine
where you were before “try” was
interrupted by ...
Why do this() and super() have to be the first statement in a constructor?
... a default constructor the call to super is inserted for you automatically by the compiler. Since every class in Java inherits from Object, objects constructor must be called somehow and it must be executed first. The automatic insertion of super() by the compiler allows this. Enforcing super to app...
How to update Python?
...
As @cxw comments below, these answers are for the same bit-versions, and by bit-version I mean 64-bit vs. 32-bit. For example, these answers would apply to updating from 64-bit Python-2.7.10 to 64-bit Python-2.7.11, ie: the same bit-version. While it is possible to install two different bit versio...
Why doesn't C++ have a garbage collector?
...st people don't really realize what they are talking about. As illustrated by Martin Beckett the problem may not be performance per se, but the predictability of performance.
There are currently 2 families of GC that are widely deployed:
Mark-And-Sweep kind
Reference-Counting kind
The Mark And ...
How to improve performance of ngRepeat over a huge dataset (angular.js)?
... - approach to overcoming these challenges with large datasets is embodied by the approach of Ionic's collectionRepeat directive and of other implementations like it. A fancy term for this is 'occlusion culling', but you can sum it up as: don't just limit the count of rendered DOM elements to an arb...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
...() callbacks are invoked when the database is actually opened, for example by a call to getWritableDatabase(). The database is not opened when the database helper object itself is created.
SQLiteOpenHelper versions the database files. The version number is the int argument passed to the constructor...
How to fix the “java.security.cert.CertificateException: No subject alternative names present” error
...
I fixed the problem by disabling HTTPS checks using the approach presented here:
I put following code into the the ISomeService class:
static {
disableSslVerification();
}
private static void disableSslVerification() {
try
{
...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
...ensuing discussion will be possibly outmoded or at least heavily mitigated by iOS 8, which may no longer make the mistake of triggering layout at the time that a view transform is applied.]
Autolayout vs. View Transforms
Autolayout does not play at all well with view transforms. The reason, as far...
Automatically resize jQuery UI dialog to the width of the content loaded by ajax
... the exact problem was (it certainly wasn't obvious from Firebug anyway). By moving all my dialog divs to the top level and using the default 1.8.1 CSS (instead of our themed version) it works great. I'll gradually move our themed version back in when 1.8.1 release drops, and find the root of the ...
How do you divide each element in a list by an int?
I just want to divide each element in a list by an int.
7 Answers
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