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Objective-C Static Class Level variables
... will be wondering, why should I overwrite the NSObject initialize method. Apple documentation about this method has the answer: "The runtime sends initialize to each class in a program exactly one time just before the class, or any class that inherits from it, is sent its first message from within ...
Changing Mercurial “Default” Parent URL
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Normally we can use
$ hg push https://bitbucket.org/username/com.example.app
But if we want to use $ hg push without the repository URL we must add the URL to the file $REPO/.hg/hgrc. We add the following contents:
[paths]
default = https://bitbucket.org/username/com.example.app
Regarding your q...
Difference between a class and a module
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The first answer is good and gives some structural answers, but another approach is to think about what you're doing. Modules are about providing methods that you can use across multiple classes - think about them as "libraries" (as you would see in a Rails app). Classes are about objects; module...
Determine what attributes were changed in Rails after_save callback?
...ved_change_to_attribute?(:published).
Rails 3–5.1
Warning
This approach works through Rails 5.1 (but is deprecated in 5.1 and has breaking changes in 5.2). You can read about the change in this pull request.
In your after_update filter on the model you can use _changed? accessor. So fo...
How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
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Here's a smooth jQuery plugin wrapping up the whole deal (basically the same principles as Nick's answer): http://strd6.com/2011/09/html5-javascript-pasting-image-data-in-chrome/
It's got a live demo, annotated source code, and everything.
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Get the current first responder without using a private API
I submitted my app a little over a week ago and got the dreaded rejection email today. It tells me that my app cannot be accepted because I'm using a non-public API; specifically, it says,
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mogileFS，可以图片服务器之上加varnish做图片缓存。
3. App接入
应用层运行在jboss或者tomcat容器中，代表独立的系统，比如前端购物、用户自主服务、后端系统等
协议接口，HTTP、JSON
可以采用servlet3.0,异步化servlet,提高整个...
Android studio using > 100% CPU at all times - no background processes appear to be running
...tudio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well.
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How do I create my own URL protocol? (e.g. so://…) [closed]
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"What about non-Windows OSes?" It's application-specific. I think it's actually frequently application-specific on Windows too (this won't make everything magically work).
– Calum
Dec 23 '08 at 17:19
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What's the 'environment' task in Rake?
... the rake tasks are, and I found an empty task definition that depends on 'app:environment', but I can't find the definition of the app:environment task. github.com/rails/rails/blob/master/railties/lib/rails/tasks/…
– odigity
Jan 27 '15 at 20:18
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