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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
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The undefined is a normal variable and can be changed simply with undefined = "new value";. So jQuery creates a local "undefined" variable that is REALLY undefined.
The window variable is made local for performance reasons. Because when J...
Relationship between hashCode and equals method in Java [duplicate]
...ride equals method in Java, should override hashCode method too, otherwise it is "violating the contract".
7 Answers
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How does lock work exactly?
...sing objects which are not thread safe we wrap the code with a lock like this:
9 Answers
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Do you use NULL or 0 (zero) for pointers in C++?
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Here's Stroustrup's take on this: C++ Style and Technique FAQ
In C++, the definition of NULL is 0, so there is only an aesthetic difference. I prefer to avoid macros, so I use 0. Another problem with NULL is that people sometimes mistakenly believe that ...
How to use git bisect?
I have read some articles saying that git bisect is awesome. However, I'm not a native speaker and I can't understand why it's awesome.
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How can I detect if a browser is blocking a popup?
...(for user input, or something important), but the popup blocker prevents this from happening.
8 Answers
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Android: AsyncTask vs Service
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In some cases it is possible to accomplish the same task with either an AsyncTask or a Service however usually one is better suited to a task than the other.
AsyncTasks are designed for once-off time-consuming tasks that cannot be run of the...
Why all the Active Record hate? [closed]
...Rails' ActiveRecord, I'll try address all the complaints which have been raised in context of using it.
@BlaM
The problem that I see with Active Records is, that it's always just about one table
Code:
class Person
belongs_to :company
end
people = Person.find(:all, :include => :com...
What is the difference between $(command) and `command` in shell programming?
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edited Dec 5 '17 at 20:42
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Should a function have only one return statement?
...s at the start of a method to return for "easy" situations. For example, this:
public void DoStuff(Foo foo)
{
if (foo != null)
{
...
}
}
... can be made more readable (IMHO) like this:
public void DoStuff(Foo foo)
{
if (foo == null) return;
...
}
So yes, I think it...