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How to sort an array of objects by multiple fields?
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Update: Here is an "optimized" version. It does a lot more preprocessing and creates a comparison function for each sorting option beforehand. It might need more more memory (as it stores a function for each sorting option, but it should preform a bit better as it does not have to determine the co...
How do we count rows using older versions of Hibernate (~2009)?
... answered Sep 3 '09 at 10:34
SalandurSalandur
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json_encode is returning NULL?
...ranca on the web. Instead of cluttering the API with additional parameters and overhead, PHP (rigthly) uses the most common encoding, leaving to you the conversion burden if you use an uncommon (or an almost dead, as in your case) encoding.
– ntd
Nov 1 '13 at 1...
Strings are objects in Java, so why don't we use 'new' to create them?
... b = new String("abcd");
then it's possible to have
a == b; // False
(and in case anyone needs reminding, always use .equals() to compare Strings; == tests for physical equality).
Interning String literals is good because they are often used more than once. For example, consider the (contrive...
How to mock void methods with Mockito
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@DeanHiller notice that setRate() is final, and therefore cannot be mocked. Instead try create()-ing an instance that does what you need. There should be no need to mock RateLimiter.
– dimo414
Jan 19 '16 at 23:31
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What's the correct way to convert bytes to a hex string in Python 3?
...ly no longer awkward:
>>> b'\xde\xad\xbe\xef'.hex()
'deadbeef'
and reverse:
>>> bytes.fromhex('deadbeef')
b'\xde\xad\xbe\xef'
works also with the mutable bytearray type.
Reference: https://docs.python.org/3/library/stdtypes.html#bytes.hex
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Swift - class method which must be overridden by subclass
Is there a standard way to make a "pure virtual function" in Swift, ie. one that must be overridden by every subclass, and which, if it is not, causes a compile time error?
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How do I pass JavaScript variables to PHP?
...ipt code to the current page PHP code... PHP code runs at the server side, and it doesn't know anything about what is going on on the client side.
You need to pass variables to PHP code from the HTML form using another mechanism, such as submitting the form using the GET or POST methods.
<DOCTY...
jQuery get mouse position within an element
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One way is to use the jQuery offset method to translate the event.pageX and event.pageY coordinates from the event into a mouse position relative to the parent. Here's an example for future reference:
$("#something").click(function(e){
var parentOffset = $(this).parent().offset();
//or $(...
Two-dimensional array in Swift
I get so confused about 2D arrays in Swift. Let me describe step by step. And would you please correct me if I am wrong.
8 ...