大约有 31,000 项符合查询结果（耗时：0.0462秒） [XML]
Run a callback only if an attribute has changed in Rails
...nge_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae6c96faac5b4a3c81
Here is a blog post on these changes: https://www.ombulabs.com/blog/rails/upgrades/active-record...
How to handle button clicks using the XML onClick within Fragments
Pre-Honeycomb (Android 3), each Activity was registered to handle button clicks via the onClick tag in a Layout's XML:
1...
multiple packages in context:component-scan, spring config
How can I add multiple packages in spring-servlet.xml file in context:component-scan element?
8 Answers
...
Does Android support near real time push notification?
...ntation for implementing this into your Android app in Java at code.google.com/android/c2dm but their sample code for communicating with the server side aspect of C2DM is lacking. I've written up a tutorial for that aspect here: blog.boxedice.com/2010/10/07/…
– davidmytton
...
What are these ^M's that keep showing up in my files in emacs?
...omatically convert line endings correctly for your platform, e.g. run this command for a global setting:
git config --global core.autocrlf true
share
|
improve this answer
|
...
Django Cookies, how can I set them?
...
-1 on that, django comes with an method to set cookies docs.djangoproject.com/en/dev/ref/request-response/…
– fetzig
Jan 11 '12 at 13:49
...
Change key pair for ec2 instance
... SSH access, please use one of the answers below.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#replacing-lost-key-pair
Here is what I did, thanks to Eric Hammond's blog post:
Stop the running EC2 instance
Detach its /dev/xvda1 volume (let's call it volume A) - see here
...
How to click or tap on a TextView text
...
developer.android.com/reference/android/view/… needs to mention something about clickable. could have saved an hour.
– taylor
Feb 19 '13 at 4:14
...
Can you avoid Gson converting “” into unicode escape sequences?
...
Guys, thats not worked for me. i am using ''com.squareup.retrofit2:retrofit:2.3.0'' && ''com.squareup.retrofit2:converter-gson:2.3.0''. Please help me.
– Mr Code
Apr 4 '18 at 5:06
...
Is there a DesignMode property in WPF?
...
Indeed there is:
System.ComponentModel.DesignerProperties.GetIsInDesignMode
Example:
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
public class MyUserControl : UserControl
{
public MyUserControl()
{
...