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Why does instanceof return false for some literals?
...) {}); // function
As you can see objects, arrays and the value null are all considered objects (null is a reference to an object which doesn't exist). Functions are distinguished because they are a special type of callable objects. However they are still objects.
On the other hand the literals t...
Clicking a button within a form causes page refresh
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Nice! It really fetched to my scenario!
– Richard
Sep 24 '15 at 14:39
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Why does ConcurrentHashMap prevent null keys and values?
...oncurrentHashMap himself (Doug Lea):
The main reason that nulls aren't allowed in ConcurrentMaps
(ConcurrentHashMaps, ConcurrentSkipListMaps) is that ambiguities that
may be just barely tolerable in non-concurrent maps can't be
accommodated. The main one is that if map.get(key) returns nul...
Make browser window blink in task Bar
...need to work around when doing title blinking if you want to fully support all major browsers).
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Mockito: Trying to spy on method is calling the original method
... = new LinkedList();
List spy = spy(list);
// Impossible: real method is called so spy.get(0) throws IndexOutOfBoundsException (the list is yet empty)
when(spy.get(0)).thenReturn("foo");
// You have to use doReturn() for stubbing
doReturn("foo").when(spy).get(0);
In your case it goes something l...
The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
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Use the Google Guava API's join method:
Joiner.on(",").join(collectionOfStrings);
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Folder structure for a Node.js project
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Concerning the folders you mentioned:
/libs is usually used for custom classes/functions/modules
/vendor or /support contains 3rd party libraries (added as git
sub-module when using git as source control)
/spec contains specifications for BDD tests.
/tests contains the unit-...
Why JavaScript rather than a standard browser virtual machine?
...n the browser rather than requiring the use of a specialized language -- really, a specialized paradigm -- for client scripting only?
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Is there a way to do method overloading in TypeScript?
...hod implementation that checks its arguments to decide which overload was called. The signature of the implementation has to be compatible with all of the overloads.
class TestClass {
someMethod(stringParameter: string): void;
someMethod(numberParameter: number, stringParameter: string): vo...
Jelly Bean DatePickerDialog — is there a way to cancel?
...Lollipop, source here. Automated class for use in clients (compatible with all Android versions) updated as well.
TL;DR: 1-2-3 dead easy steps for a global solution:
Download this class.
Implement OnDateSetListener in your activity (or change the class to suit your needs).
Trigger the dialog with...