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Import package.* vs import package.SpecificType [duplicate]
Would it suppose any difference regarding overhead to write an import loading all the types within one package ( import java.* ); than just a specific type (i.e. import java.lang.ClassLoader )? Would the second one be a more advisable way to use than the other one?
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How to clone git repository with specific revision/changeset?
How can I clone git repository with specific revision, something like I usually do in Mercurial:
15 Answers
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Reference — What does this symbol mean in PHP?
... that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list.
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PHP random string generator
...ying to create a randomized string in PHP, and I get absolutely no output with this:
59 Answers
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IEnumerable vs List - What to Use? How do they work?
...ow LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
public IEnumerable<Animals> AllSpotted()
{
return from a in Zoo.Animals
where a.coat.HasSpots == true
select a;
}
public IEnumerable<Animals> Feline(IEnumerable<An...
What is a handle in C++?
I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a reference to an object, rather than the object itself. What is a more elaborate explanation?
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Assign variable in if condition statement, good practice or not? [closed]
...ssic OO languages such like Java to JavaScript. The following code is definitely not recommended (or even not correct) in Java:
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Best way to give a variable a default value (simulate Perl ||, ||= )
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In PHP 7 we finally have a way to do this elegantly. It is called the Null coalescing operator. You can use it like this:
$name = $_GET['name'] ?? 'john doe';
This is equivalent to
$name = isset($_GET['name']) ? $_GET['name']:'john doe';
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Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
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First, let's see what this does:
Arrays.asList(ia)
It takes an array ia and creates a wrapper that implements List<Integer>, which makes the original array available as a list. Nothing is copied and all, only a single wrapper object is created. Operations on the list wr...
Where to store global constants in an iOS application?
...ould like to have a configuration file storing the base URL of the server. It will look something like this:
11 Answers
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