大约有 30,000 项符合查询结果（耗时：0.0343秒） [XML]
MVC (Laravel) where to add logic
...ve a request and return data and this is not the place to put validations, call db methods, etc..
Models: Is this a good place to add logic like sending an welcome email when a user registers or update the vote count of a post? What if you need to send the same email from another place in your cod...
Initialize parent's protected members with initialization list (C++)
... class object is yet to be formed. The base class constructor has not been called till then. Only after the base class constructor has been called, something comes to being. Hence the problem. When you do not call the base class constructor explicitly, the compiler does that for you (by generating t...
Why is 'false' used after this simple addEventListener function?
...e are two stages of event processing.
The event first goes down - that’s called capturing, and then bubbles up . This behavior is standartized in W3C specification.
which means no matter what you set the useCapture to, these two event phases always exist.
This picture shows how it works.
Accord...
Differences between fork and exec
...IX in that it provides a very simple way to start new processes.
The fork call basically makes a duplicate of the current process, identical in almost every way. Not everything is copied over (for example, resource limits in some implementations) but the idea is to create as close a copy as possibl...
HTML button calling an MVC Controller and Action method
I know this isn't right, but for the sake of illustration I'd like to do something like this:
19 Answers
...
Activity has leaked window that was originally added
.... so the 'real' exception was a little earlier in the log
Answer 3
Call dismiss() on the Dialog instance you created before exiting your
Activity, e.g. in onPause() or onDestroy()
share
|
...
Can a dictionary be passed to django models on create?
...rguments in your dictionary using the ** operator.
Assuming your model is called MyModel:
# create instance of model
m = MyModel(**data_dict)
# don't forget to save to database!
m.save()
As for your second question, the dictionary has to be the final argument. Again, extra and extra2 should be f...
Invoking JavaScript code in an iframe from the parent page
Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page.
...
Push Notifications in Android Platform
...ud to Device Messaging Framework has been deprecated. The new framework is called Google Cloud Messaging and can be found here: developer.android.com/guide/google/gcm/index.html
– Ryan Berger
Jul 9 '12 at 1:04
...
How can you tell when a layout has been drawn?
...the layout. This should return the correct width and height. onCreate() is called before the layout of the child views are done. So the width and height is not calculated yet. To get the height and width, put this on the onCreate() method:
final LinearLayout layout = (LinearLayout) findViewById...