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What exactly is Spring Framework for? [closed]
...The problem
For example, suppose you need to list the users of the system and thus declare an interface called UserLister:
public interface UserLister {
List<User> getUsers();
}
And maybe an implementation accessing a database to get all the users:
public class UserListerDB implements...
When should I use double or single quotes in JavaScript?
...r use of single vs. double in different libraries is programmer preference and/or API consistency. Other than being consistent, use whichever best suits the string.
Using the other type of quote as a literal:
alert('Say "Hello"');
alert("Say 'Hello'");
This can get complicated:
alert("It's \"game\"...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...
Braces ($var vs. ${var})
In most cases, $var and ${var} are the same:
var=foo
echo $var
# foo
echo ${var}
# foo
The braces are only needed to resolve ambiguity in expressions:
var=foo
echo $varbar
# Prints nothing because there is no variable 'varbar'
echo ${var}bar...
When to use lambda, when to use Proc.new?
In Ruby 1.8, there are subtle differences between proc/lambda on the one hand, and Proc.new on the other.
14 Answers
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Can PHP cURL retrieve response headers AND body in a single request?
Is there any way to get both headers and body for a cURL request using PHP? I found that this option:
13 Answers
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What are all codecs and formats supported by FFmpeg?
I need a list of codecs and formats supported by FFmpeg. Where can I find it?
4 Answers
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How JavaScript closures are garbage collected
I've logged the following Chrome bug , which has led to many serious and non-obvious memory leaks in my code:
6 Answers
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Generate colors between red and green for a power meter?
I'm writing a Java game and I want to implement a power meter for how hard you are going to shoot something.
19 Answers
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Create a GUID in Java
...
Have a look at the UUID class bundled with Java 5 and later.
For example:
If you want a random UUID you can use the randomUUID method.
If you want a UUID initialized to a specific value you can use the UUID constructor or the fromString method.
...
VIM Disable Automatic Newline At End Of File
So I work in a PHP shop, and we all use different editors, and we all have to work on windows. I use vim, and everyone in the shop keeps complaining that whenever I edit a file there is a newline at the bottom. I've searched around and found that this is a documented behavior of vi & vim... but I w...