大约有 40,000 项符合查询结果（耗时：0.0525秒） [XML]
Circular list iterator in Python
...
Output:
a b c a b c ...
(Loops forever, obviously)
In order to manually advance the iterator and pull values from it one by one, simply call next(pool):
>>> next(pool)
'a'
>>> next(pool)
'b'
share...
How can I get current date in Android?
...
This requires API 24!
– ueen
Jun 5 '19 at 13:21
FYI, the ...
jQuery 1.9 .live() is not a function
...
The jQuery API documentation lists live() as deprecated as of version 1.7 and removed as of version 1.9: link.
version deprecated: 1.7, removed: 1.9
Furthermore it states:
As of jQuery 1.7, the .live() method is deprecated. Us...
How do I access the request object or any other variable in a form's clean() method?
... but how can I access the request object? Can I modify the clean method to allow variables input?
11 Answers
...
When to use self over $this?
...
$x = new Y();
$x->bar();
?>
The idea is that $this->foo() calls the foo() member function of whatever is the exact type of the current object. If the object is of type X, it thus calls X::foo(). If the object is of type Y, it calls Y::foo(). But with self::foo(), X::foo() is always ...
Infinite scrolling with React JS
...rom 'react';
import InfiniteScroll from 'react-infinite-scroller';
const api = {
baseUrl: '/joblist'
};
class Jobs extends Component {
constructor(props) {
super(props);
this.state = {
listData: [],
hasMoreItems: true,
...
How to disable python warnings
...lter("ignore")
fxn()
I don't condone it, but you could just suppress all warnings with this:
import warnings
warnings.filterwarnings("ignore")
Ex:
>>> import warnings
>>> def f():
... print('before')
... warnings.warn('you are warned!')
... print('after')
>>> ...
How do I select text nodes with jQuery?
I would like to get all descendant text nodes of an element, as a jQuery collection. What is the best way to do that?
11 An...
How can I access and process nested objects, arrays or JSON?
...as any string can be used as key in objects. The key-value pairs are also called the "properties".
Properties can be accessed either using dot notation
const value = obj.someProperty;
or bracket notation, if the property name would not be a valid JavaScript identifier name [spec], or the name is...
How do I get the width and height of a HTML5 canvas?
...n the canvas element, the default 300x150 size will be returned. To dynamically get the correct width and height use the following code:
const canvasW = canvas.getBoundingClientRect().width;
const canvasH = canvas.getBoundingClientRect().height;
Or using the shorter object destructuring syntax:
...