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Backing beans (@ManagedBean) or CDI Beans (@Named)?
...As per JSF 2.3, @ManagedBean is deprecated. See also spec issue 1417. This means that there's not anymore a reason to choose @ManagedBean over @Named. This was first implemented in Mojarra 2.3.0 beta version m06.
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The core difference is, @ManagedBean is managed by JSF framework and is only ...
Unignore subdirectories of ignored directories in Git
...at worked for me. My folder was NOT ignored, but I could not add it by any means. This way solved it for me.
– Akito
May 2 '19 at 4:02
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Difference between class and type
... I won't make the edit myself because I'm not certain that's what you meant to write, but it might work better saying that classes are "a kind of a type" rather than "a type of a type".
– user
May 17 '13 at 7:48
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Possible reason for NGINX 499 error codes
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HTTP 499 in Nginx means that the client closed the connection before the server answered the request. In my experience is usually caused by client side timeout. As I know it's an Nginx specific error code.
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When to use next() and return next() in Node.js
Scenario : Consider the following is the part of code from a node web app.
5 Answers
5...
How to make an Android device vibrate?
...ep for 1000 milliseconds
long[] pattern = {0, 100, 1000};
// The '0' here means to repeat indefinitely
// '0' is actually the index at which the pattern keeps repeating from (the start)
// To repeat the pattern from any other point, you could increase the index, e.g. '1'
v.vibrate(pattern, 0);
Wh...
@UniqueConstraint annotation in Java
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@Entity
@Table(uniqueConstraints={@UniqueConstraint(columnNames = {"id_1" , "id_2"})})
public class class_name {
@Id
@GeneratedValue
public Long id;
@NotNull
public Long id_1;
@NotNull
public Long id_2;
}
Hope it helped.
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What special characters must be escaped in regular expressions?
... (BRE), these are metacharacters that you need to escape to suppress their meaning:
.^$*[\
Escaping parentheses and curly brackets in BREs gives them the special meaning their unescaped versions have in EREs. Some implementations (e.g. GNU) also give special meaning to other characters when esca...
Rails where condition using NOT NIL
...The canonical way to do this with Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I ...
How to pattern match using regular expression in Scala?
...egex as "one of the characters a, b, c, A, B or C followed by anything" (. means "any character" and * means "zero or more times", so ".*" is any string).
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