大约有 18,336 项符合查询结果（耗时：0.0242秒） [XML]
How do I clone a Django model instance object and save it to the database?
...
I had to set both obj.pk and obj.id to make this work in Django 1.4
– Petr Peller
Jan 10 '14 at 18:00
...
How to store custom objects in NSUserDefaults
...g calls to encodeObject with something relevant to your own object):
- (void)encodeWithCoder:(NSCoder *)encoder {
//Encode properties, other class variables, etc
[encoder encodeObject:self.question forKey:@"question"];
[encoder encodeObject:self.categoryName forKey:@"category"];
[en...
Understanding Linux /proc/id/maps
...ing to understand my embedded Linux application's memory use. The /proc/pid/maps utility/file seems to be a good resource for seeing the details. Unfortunately I don't understand all the columns and entries.
...
How to write an XPath query to match two attributes?
...
//div[@id='..' and @class='...]
should do the trick. That's selecting the div operators that have both attributes of the required value.
It's worth using one of the online XPath testbeds to try stuff out.
...
Count immediate child div elements using jQuery
...
$("#foo > div").length
Direct children of the element with the id 'foo' which are divs. Then retrieving the size of the wrapped set produced.
share
|
improve this answer
|
...
How to get the process ID to kill a nohup process?
...task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill). Alternatively, you can f...
“Keep Me Logged In” - the best approach
...o page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
...
How to get the index of an element in an IEnumerable?
... +1 for "questioning the wisdom". 9 times out of 10 it's probably a bad idea in the first place.
– Joel Coehoorn
Aug 17 '09 at 21:45
...
Can I use Objective-C blocks as properties?
...
@property (nonatomic, copy) void (^simpleBlock)(void);
@property (nonatomic, copy) BOOL (^blockWithParamter)(NSString *input);
If you are going to be repeating the same block in several places use a type def
typedef void(^MyCompletionBlock)(BOOL succes...
How to calculate the SVG Path for an arc (of a circle)
....y
].join(" ");
return d;
}
to use
document.getElementById("arc1").setAttribute("d", describeArc(200, 400, 100, 0, 180));
and in your html
<path id="arc1" fill="none" stroke="#446688" stroke-width="20" />
Live demo
...