Questions tagged [modifier]
347 questions
475
votes
8 answers
What does the "static" modifier after "import" mean?
When used like this:
import static com.showboy.Myclass;
public class Anotherclass{}
what's the difference between import static com.showboy.Myclass and import com.showboy.Myclass?
JSON
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391
votes
5 answers
What is the 'open' keyword in Swift?
The ObjectiveC.swift file from the standard library contains the following few lines of code around line 228:
extension NSObject : Equatable, Hashable {
/// ...
open var hashValue: Int {
return hash
}
}
What does open var mean in this…
Clashsoft
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282
votes
20 answers
SwiftUI - How do I change the background color of a View?
I'm beginning to try out SwiftUI and I'm surprised that it doesn't seem to be straightforward to change the background color of a View. How do you do this using SwiftUI?
jeremyabannister
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134
votes
4 answers
What are Transient and Volatile Modifiers?
Can someone explain what the transient and volatile modifiers mean in Java?
Vijay Bhaskar Semwal
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84
votes
7 answers
Difference between static modifier and static block
Someone explain to me the differences between the following two statements?
A static final variable initialized by a static code block:
private static final String foo;
static { foo = "foo"; }
A static final variable initialized by an…
Fabio_M
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81
votes
12 answers
Can you alter a Javascript function after declaring it?
Let's say I have var a = function() { return 1; }. Is it possible to alter a so that a() returns 2? Perhaps by editing a property of the a object, since every function is an object?
Update: Wow, thanks for all the responses. However, I'm afraid I…
pr1001
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78
votes
4 answers
How does extern work in C#?
Whenever I look deeply enough into reflector I bump into extern methods with no source. I read the msdn documentation at http://msdn.microsoft.com/en-us/library/e59b22c5(v=vs.80).aspx. What I got from that article is that methods with the extern…
smartcaveman
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75
votes
8 answers
Pros and cons of package private classes in Java?
I am learning Java recently, and I came across the notion of package-private classes, which is the default if we don't specify anything. But then I realized:
I seldom see the use of package-private class. Is there a reason for this, e.g., it has…
zw324
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46
votes
5 answers
isAbstract() Modifier returning Incorrect result - Why?
To my understanding the following code should print False as output
However, when I ran this code it is printing True as output.
From Java docs:
Return true if the integer argument includes the abstract modifier,
false otherwise.
public class…
T-Bag
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34
votes
4 answers
What is the point of "static new" modifier for a function?
Today, I found something in legacy code. It has "static new" for one function. It looks like this.
class Foo
{
public static void Do()
{
Console.WriteLine("Foo.Do");
}
}
class Bar: Foo
{
public static new void Do()
{
…
Morgan Cheng
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34
votes
3 answers
Perl Regex 'e' (eval) modifier with s///
I'm having a little trouble comprehending this simple use of the /e regex modifier.
my $var = 'testing';
$_ = 'In this string we are $var the "e" modifier.';
s/(\$\w+)/$1/ee;
print;
Returns: "In this string we are testing the "e" modifier."
I…
pb149
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33
votes
5 answers
Jetpack Compose - Order of Modifiers
Documentation says that Modifiers are applied from the left.
But from this example it looks like they are applied from the right:
First border and then padding because there is no space between text and border
Text("Hi there!",…
ivoronline
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20
votes
4 answers
How can I add flags to an existing regular expression?
I have a bunch of regular expression, e.g. /[a-z]/. Later in my program I need to have this as /[a-z]/g,
so I need to add the 'global' modifier later. How can I add a modifier to an existing regular expression?
Jinu Joseph Daniel
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20
votes
3 answers
Difference between regular expression modifiers (or flags) 'm' and 's'?
I often forget about the regular expression modifiers m and s and their differences. What is a good way to remember them?
As I understand them, they are:
'm' is for multiline, so that ^ and $
will match beginning of string and end
of string…
nonopolarity
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20
votes
8 answers
Why subclass in another package cannot access a protected method?
I have two classes in two different packages:
package package1;
public class Class1 {
public void tryMePublic() {
}
protected void tryMeProtected() {
}
}
package package2;
import package1.Class1;
public class Class2 extends…
user2986848
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