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String, StringBuffer, and StringBuilder
... a single thread then it is better to use StringBuilder. StringBuilder is more efficient than StringBuffer.
Situations:
If your string is not going to change use a String class because a String object is immutable.
If your string can change (example: lots of logic and operations in the constructi...
Single huge .css file vs. multiple smaller specific .css files? [closed]
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A CSS compiler like Sass or LESS is a great way to go. That way you'll be able to deliver a single, minimised CSS file for the site (which will be far smaller and faster than a normal single CSS source file), while maintaining the nicest development ...
How to prune local tracking branches that do not exist on remote anymore
With git remote prune origin I can remove the local branches that are not on the remote any more.
31 Answers
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How to make PDF file downloadable in HTML link?
I am giving link of a pdf file on my web page for download, like below
13 Answers
13
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MySQL high CPU usage [closed]
...probably want to turn off persistent connections as they almost always do more harm than good.
Secondly I'd say you want to double check your MySQL users, just to make sure it's not possible for anyone to be connecting from a remote server. This is also a major security thing to check.
Thirdly I'd...
How to run Ruby code from terminal?
...w lines of Ruby code from terminal, but I can't find the needed parameter for it.
2 Answers
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What is the difference between setUp() and setUpClass() in Python unittest?
...erence between setUp() and setUpClass() in the Python unittest framework? Why would setup be handled in one method over the other?
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JPA: How to have one-to-many relation of the same Entity type
...general case is detailed in Section 2.10.2 of the JPA 2.0 spec.
Here's a worked example. First, the entity class A:
@Entity
public class A implements Serializable {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@ManyToOne
private A parent;
@OneToMany(...
PHP: How to handle
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You're probably not accessing it correctly. You can output it directly or cast it as a string. (in this example, the casting is superfluous, as echo automatically does it anyway)
$content = simplexml_load_string(
'<content><![CDATA[Hello, world!...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
... This way, you are avoiding the "diamond problem": en.wikipedia.org/wiki/Diamond_problem#The_diamond_problem
– Nick L.
Feb 13 '14 at 15:32
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