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What is JNDI? What is its basic use? When is it used?
... Directory Interface.
What is its basic use?
JNDI allows distributed applications to look up services in an abstract, resource-independent way.
When it is used?
The most common use case is to set up a database connection pool on a Java EE application server. Any application that's deplo...
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
I am using Authlogic-Connect for third party logins. After running appropriate migrations, Twitter/Google/yahoo logins seem to work fine but the facebook login throws exception:
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Changing Mercurial “Default” Parent URL
....
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...
Is embedding background image data into CSS as Base64 good or bad practice?
...mages as data into CSS or HTML templates could be beneficial on mobile web apps. You should measure usage on a case-by-case basis -- I'm not advocating that data URIs should be used everywhere in a mobile web app.
Note that mobile browsers have limitations on total size of files that can be cached....
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...
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 ...
Link to all Visual Studio $ variables
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While there does not appear to be one complete list, the following may also be helpful:
How to use Environment properties:
http://msdn.microsoft.com/en-us/library/ms171459.aspx
MSBuild reserved properties:
http://msdn.microsoft.com/en-u...
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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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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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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