大约有 45,000 项符合查询结果（耗时：0.0592秒） [XML]
How do I make an Android EditView 'Done' button and hide the keyboard when clicked?
When the user clicks on the EditView , Android opens the keyboard so that user can write in the EditView .
17 Answers
...
How do you serialize a model instance in Django?
...
You can easily use a list to wrap the required object and that's all what django serializers need to correctly serialize it, eg.:
from django.core import serializers
# assuming obj is a model instance
serialized_obj = serializers.serialize('json', [ obj, ])
...
Calling JMX MBean method from a shell script
... JMX MBean method from a shell script. We expose some operations/admin commands through JMX, and we could have our admins use JConsole, or VisualVM, but some tasks are better left to automation. In that automation we'd like to be able to call a JMX MBean method on our running server, preferably from...
What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
On the EJS github page, there is one and only one simple example:
https://github.com/visionmedia/ejs
13 Answers
...
Does IMDB provide an API? [closed]
...
The IMDb has a public API that, although undocumented, is fast and reliable (used on the official website through AJAX).
Search Suggestions API
https://sg.media-imdb.com/suggests/a/aa.json
https://v2.sg.media-imdb.com/suggests/h/hello.json (alternate)
Format: JSON-P
Caveat: It's in JS...
Infinite Recursion with Jackson JSON and Hibernate JPA issue
...ks to As Zammel AlaaEddine for pointing this out).
JsonManagedReference and JsonBackReference
Since Jackson 1.6 you can use two annotations to solve the infinite recursion problem without ignoring the getters/setters during serialization: @JsonManagedReference and @JsonBackReference.
Explanatio...
file_put_contents - failed to open stream: Permission denied
...77 database (from the directory that contains the database folder)
apache and nobody will have access to this directory if it is chmodd'ed correctly.
The other thing to do is echo "getcwd()". This will show you the current directory, and if this isn't '/something.../database/' then you'll need to ...
Executing elements inserted with .innerHTML
...e's a script that does:
exec_body_scripts: function(body_el) {
// Finds and executes scripts in a newly added element's body.
// Needed since innerHTML does not run scripts.
//
// Argument body_el is an element in the dom.
function nodeName(elem, name) {
return elem.nodeName &&am...
How to add multiple objects to ManyToMany relationship at once in Django ?
...mber of arguments, not a list of them.
add(obj1, obj2, obj3, ...)
To expand that list into arguments, use *
add(*[obj1, obj2, obj3])
Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
...
In Python, what is the difference between “.append()” and “+= []”?
...d will add one item to the list, while += will copy all elements of right-hand-side list into the left-hand-side list.
Update: perf analysis
Comparing bytecodes we can assume that append version wastes cycles in LOAD_ATTR + CALL_FUNCTION, and += version -- in BUILD_LIST. Apparently BUILD_LIST outw...