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What does = +_ mean in JavaScript
...s to a number.
_ is only a variable name (not an operator), it could be a, foo etc.
Example:
+"1"
cast "1" to pure number 1.
var _ = "1";
var r = +_;
r is now 1, not "1".
Moreover, according to the MDN page on Arithmetic Operators:
The unary plus operator precedes its operand and evalua...
How to display a dynamically allocated array in the Visual Studio debugger?
...re an easy way to tell the debugger, show me this data as an array of type Foo and size X?
9 Answers
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Getting hold of the outer class object from the inner class object
...
Here's the example:
// Test
public void foo() {
C c = new C();
A s;
s = ((A.B)c).get();
System.out.println(s.getR());
}
// classes
class C {}
class A {
public class B extends C{
A get() {return A.this;}
}
public String getR() {
...
Putting an if-elif-else statement on one line?
...but only for expressions, not for statements:
>>> a = "Hello" if foo() else "Goodbye"
Edit:
Your revised question now shows that the three statements are identical except for the value being assigned. In that case, a chained ternary operator does work, but I still think that it's less r...
No Persistence provider for EntityManager named
...deprecated, see above. Use hibernate-core instead.
– foo
Feb 10 '18 at 1:29
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Is there a way to detect if a browser window is not currently active?
I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it'd be nice to not run.
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specify project file of a solution using msbuild
I want the commandline for building a particular project of a solution using msbuild like we do with devenv.com.In devenv.com we can specify a project of a solution using following commandline
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Why is there no SortedList in Java?
In Java there are the SortedSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a sorted way to access the elements.
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how to check if object already exists in a list
...e those 2 properties, you could:
bool alreadyExists = myList.Any(x=> x.Foo=="ooo" && x.Bar == "bat");
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Non-CRUD operations in a RESTful service
What is the "RESTful" way of adding non-CRUD operations to a RESTful service? Say I have a service that allows CRUD access to records like this:
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