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What is the “volatile” keyword used for?
...e visible to other processors.
Consider the following example:
something.foo = new Thing();
If foo is a member variable in a class, and other CPUs have access to the object instance referred to by something, they might see the value foo change before the memory writes in the Thing constructor ar...
ASP.NET MVC: Custom Validation by DataAnnotation
...ength(20, "Bar", "Baz", ErrorMessage = "The combined minimum length of the Foo, Bar and Baz properties should be longer than 20")]
public string Foo { get; set; }
public string Bar { get; set; }
public string Baz { get; set; }
}
...
If table exists drop table then create it, if it does not exist just create it
...
Just use DROP TABLE IF EXISTS:
DROP TABLE IF EXISTS `foo`;
CREATE TABLE `foo` ( ... );
Try searching the MySQL documentation first if you have any other problems.
share
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imp...
Get name of object or class
...ill return empty string, if used on objects declared through variable: var Foo = function() {};.
– Aleksandr Makov
Feb 26 '14 at 14:56
3
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Constructor of an abstract class in C#
...
From a terminology perspective, if Foo is an inheritable concrete type, and DerivedFoo:Foo, what term would you use to describe a heap object instance which will report its type as Foo, as distinct from DerivedFoo? My own inclination would be to use the phras...
How to create id with AUTO_INCREMENT on Oracle?
...asier to handle in some languages.
x is the identity column. Substitute FOO with your table name in each of the examples.
-- numerical identity, e.g. 1,2,3...
create table FOO (
x number primary key
);
create sequence FOO_seq;
create or replace trigger FOO_trg
before insert on FOO
for each...
class method generates “TypeError: … got multiple values for keyword argument …”
... is called, typically labelled self. If the class is declared thus:
class foo(object):
def foodo(self, thing=None, thong='not underwear'):
print thing if thing else "nothing"
print 'a thong is',thong
it behaves as expected.
Explanation:
Without self as the first parameter, when myfo...
Java Name Hiding: The Hard Way
... the target object isn't involved in invocation of static methods).
((net.foo.X) null).doSomething();
This has the benefits of
being side-effect free (a problem with instantiating net.foo.X),
not requiring renaming of anything (so you can give the method in B the name you want it to have; that'...
Is it a bad practice to use break in a for loop? [closed]
...shing found versus not found when you get out. That is:
for (int x=0;x<fooCount;++x)
{
Foo foo=getFooSomehow(x);
if (foo.bar==42)
break;
}
// So when we get here, did we find one, or did we fall out the bottom?
So okay, you can set a flag, or initialize a "found" value to null. But
T...
Create a Path from String in Java7
...e.com/javase/tutorial/essential/io/pathOps.html
Path p1 = Paths.get("/tmp/foo");
is the same as
Path p4 = FileSystems.getDefault().getPath("/tmp/foo");
Path p3 = Paths.get(URI.create("file:///Users/joe/FileTest.java"));
Path p5 = Paths.get(System.getProperty("user.home"),"logs", "foo.log"); ...