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What does the “static” modifier after “import” mean?
... fields / method of a class instead of:
package test;
import org.example.Foo;
class A {
B b = Foo.B_INSTANCE;
}
You can write :
package test;
import static org.example.Foo.B_INSTANCE;
class A {
B b = B_INSTANCE;
}
It is useful if you are often used a constant from another class in yo...
Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
...s not efficiency. Non-reentrant mutexes lead to better code.
Example: A::foo() acquires the lock. It then calls B::bar(). This worked fine when you wrote it. But sometime later someone changes B::bar() to call A::baz(), which also acquires the lock.
Well, if you don't have recursive mutexes,...
Getting URL hash location, and using it in jQuery
...n use the String.substring method:
var url = "http://example.com/file.htm#foo";
var hash = url.substring(url.indexOf('#')); // '#foo'
Advice: Be aware that the user can change the hash as he wants, injecting anything to your selector, you should check the hash before using it.
...
Log all requests from the python-requests module
...level=logging.DEBUG)
>>> r = requests.get('http://httpbin.org/get?foo=bar&baz=python')
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): httpbin.org:80
DEBUG:urllib3.connectionpool:http://httpbin.org:80 "GET /get?foo=bar&baz=python HTTP/1.1" 200 366
Depending on the e...
Does static constexpr variable inside a function make sense?
...
An example for my last comment: static constexpr int foo = 100;. There is no reason why the compiler couldn't substitute usage of foo everywhere for literal 100, unless code were doing something like &foo. So static on foo has no usefulness in this case since foo doesn't ex...
Hibernate JPA Sequence (non-Id)
...nly, your property mapping (.hbm.xml) would look like:
<property name="foo" generated="insert"/>
For properties generated on insert and update your property mapping (.hbm.xml) would look like:
<property name="foo" generated="always"/>
Unfortunately, I don't know JPA, so I don't kno...
Easy way to see saved NSUserDefaults?
...will be a few of them. So you need to find your app binary:
find . -name foo.app
./1BAB4C83-8E7E-4671-AC36-6043F8A9BFA7/foo.app
Then go to the Library/Preferences directory in the GUID directory. So:
cd 1BAB4C83-8E7E-4671-AC35-6043F8A9BFA7/Library/Preferences
You should find a file that look...
How to check if variable is string with python 2 and 3 compatibility
...I am a bit confuse about the following result. >>> isinstance(u"foo", string_types) True >>> isinstance(u"foo".encode("utf-8"), string_types) True I was expecting isinstance(u"foo", string_types) return false.
– Chandler.Huang
Mar 31 '16...
Best practice: PHP Magic Methods __set and __get [duplicate]
...
@Matthieu: As noted in the answer, $foo->bar would simply call $this->get_bar(), which is a getter and can be changed to do whatever you need it to.
– FtDRbwLXw6
Feb 13 '13 at 0:09
...
Set “Homepage” in Asp.Net MVC
In asp.net MVC the "homepage" (ie the route that displays when hitting www.foo.com) is set to Home/Index .
8 Answers
...