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Can an interface extend multiple interfaces in Java?
...same name and signature?
There is a tricky point:
interface A {
void test();
}
interface B {
void test();
}
class C implements A, B {
@Override
public void test() {
}
}
Then single implementation works for both :).
Read my complete post here:
http://codeinventions...
Given a view, how do I get its viewController?
...
@andrey answer in one line (tested in Swift 4.1):
extension UIResponder {
public var parentViewController: UIViewController? {
return next as? UIViewController ?? next?.parentViewController
}
}
usage:
let vc: UIViewController = view...
What is the best way to detect a mobile device?
... it:
if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) {
// some code..
}
Or you can combine them both to make it more accessible through jQuery...
$.browser.device = (/android|webos|iphone|ipad|ipod|blackberry|iemobile|opera mini/i.test(navigator....
Why do we need the “finally” clause in Python?
...xception. (Or if you don't catch that specific exception.)
myfile = open("test.txt", "w")
try:
myfile.write("the Answer is: ")
myfile.write(42) # raises TypeError, which will be propagated to caller
finally:
myfile.close() # will be executed before TypeError is propagated
In th...
C++ Best way to get integer division and remainder
...
I tried a quick test. With g++ 4.3.2 using -O2, the assembler output clearly shows it using one idivl instruction and using the results in eax and edx. I'd have been shocked if it didn't.
– Fred Larson
...
Copy folder recursively, excluding some folders
...une applied to them. Because the
default `and' condition between tests binds more tightly than -o, this
is the default anyway, but the parentheses help to show what is going
on.
share
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...
How to read contacts on Android 2.0
...ame="android.permission.READ_CONTACTS"/>
ContactList.java
package com.test;
import java.util.ArrayList;
public class ContactList {
private ArrayList<Contact> contacts = new ArrayList<Contact>();
public ArrayList<Contact> getContacts() {
return contacts;
}
public void s...
Loop through all nested dictionary values?
... yield inner_key, inner_value
else:
yield key, value
Test:
list(nested_dict_iter({'a':{'b':{'c':1, 'd':2},
'e':{'f':3, 'g':4}},
'h':{'i':5, 'j':6}}))
# output: [('g', 4), ('f', 3), ('c', 1), ('d', 2), ('i', 5), ('j', 6)]
I...
Hidden Features of PHP? [closed]
...
I agree as well. The greatest thing about the manual are the user comments. I have rarely seen other documentations have those. They can contain real gems. The only downside is that IMHO they a pruned little too soon.
– Sander M...
How to return a string value from a Bash function
...n_a_string_message+=$(date)
ret=$MYLIB_return_a_string_message
}
and testing this example:
$ return_a_string result; echo $result
The date is 20160817
Note that the bash "declare" builtin, when used in a function, makes the declared variable "local" by default, and "-n" can also be used wit...