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What is the difference between == and equals() in Java?
...he same object, if their references are one and the same. Thus you will be testing for object equality and not functional equality.
Always remember to override hashCode if you override equals so as not to "break the contract". As per the API, the result returned from the hashCode() method for two o...
What are JavaScript's builtin strings?
..., strings "1", and discovered one beautiful method of RegExp object called test(). Its name can be assembled from all available characters, e.g. "t" and "e" from true, and "s" from false. I have created a string "test" and addressed this method using square brackets notation for regex literal /-/, c...
Stop an input field in a form from being submitted
...
I tested leaving out the name attribute with chrome, firefox, safari and it seems that the form fields are being submitted to the server with an empty string for the name. I inspected the post data using WebScarab and found tha...
Should you always favor xrange() over range()?
...fixer: idioms
RefactoringTool: Skipping implicit fixer: ws_comma
--- range_test.py (original)
+++ range_test.py (refactored)
@@ -1,7 +1,7 @@
for x in range(20):
- a=range(20)
+ a=list(range(20))
b=list(range(20))
c=[x for x in range(20)]
d=(x for x in range(20))
- e=xrange(...
Advantage of switch over if-else statement
...different area of the code, but now you have the opportunity to reuse this test. You also have more options for how to solve it. You could use std::set, for example:
bool RequiresSpecialEvent(int numError)
{
return specialSet.find(numError) != specialSet.end();
}
I'm not suggesting that thi...
How to properly compare two Integers in Java?
...d a numeric type (int, long etc) the wrapper type value is unboxed and the test is applied to the primitive values involved.
This occurs as part of binary numeric promotion (JLS section 5.6.2). Look at each individual operator's documentation to see whether it's applied. For example, from the docs ...
How do I programmatically force an onchange event on an input?
...ey're extremely rare.
Rather, you would do this:
document.getElementById("test").onchange()
Look here for more options:
http://jehiah.cz/archive/firing-javascript-events-properly
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Symfony 2 EntityManager injection in service
...anymore. According to the documentation You would pass in:
services:
test.common.userservice:
class: Test\CommonBundle\Services\UserService
arguments: [ "@doctrine.orm.entity_manager" ]
And then they would be available in the order they were listed via the arguments (if ther...
java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
While running junit test in eclipse I am getting this Exception :
17 Answers
17
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Call js-function using JQuery timer
...window.setInterval(yourfunction, 10000);
function yourfunction() { alert('test'); }
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