大约有 47,000 项符合查询结果（耗时：0.0794秒） [XML]
Extracting an attribute value with beautifulsoup
...ending on what you want exactly you either should do:
output = input_tag[0]['value']
or use .find() method which returns only one (first) found element:
input_tag = soup.find(attrs={"name": "stainfo"})
output = input_tag['value']
...
Android: how to check if a View inside of ScrollView is visible?
...
Rich SchulerRich Schuler
40.1k66 gold badges6868 silver badges5858 bronze badges
...
How to check if there's nothing to be committed in the current branch?
...ies. is there someway exclude these directory?
– 9nix00
Feb 28 '11 at 10:26
...
Are Swift variables atomic?
...ditional keywords (similar to @lazy) might be introduced later on.
Update 07/20/15: according to this blogpost on singletons swift environment can make certain cases thread safe for you, i.e.:
class Car {
static let sharedCar: Car = Car() // will be called inside of dispatch_once
}
private le...
return, return None, and no return at all?
...nswered Mar 8 '13 at 18:19
user2032433user2032433
5
...
Why do we copy then move?
... being copied. And std::string does have a move constructor.
Unlike in C++03, in C++11 it is often idiomatic to take parameters by value, for the reasons I am going to explain below. Also see this Q&A on StackOverflow for a more general set of guidelines on how to accept parameters.
Why are...
How to trigger the window resize event in JavaScript?
...
401
Where possible, I prefer to call the function rather than dispatch an event. This works well if...
TypeLoadException says 'no implementation', but it is implemented
... |
edited Sep 26 '10 at 19:39
answered Jun 4 '09 at 5:58
...
What is the strict aliasing rule?
... = (Msg*)(buff);
// Send a bunch of messages
for (int i = 0; i < 10; ++i)
{
msg->a = i;
msg->b = i+1;
SendWord(buff[0]);
SendWord(buff[1]);
}
}
The strict aliasing rule makes this setup illegal: dereferencing a pointer that aliase...
How can I mask a UIImageView?
... = (id)[[UIImage imageNamed:@"mask.png"] CGImage];
mask.frame = CGRectMake(0, 0, <img_width>, <img_height>);
yourImageView.layer.mask = mask;
yourImageView.layer.masksToBounds = YES;
For Swift 4 and plus follow code below
let mask = CALayer()
mask.contents = [ UIImage(named: "right_c...