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Determine if ActiveRecord Object is New
How can I check if an ActiveRecord object is new or is already persisted?
2 Answers
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Pointer to pointer clarification
I was following this tutorial about how does a pointer to a pointer work.
16 Answers
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How to remove all callbacks from a Handler?
..., but it still call again and again). Is there anyway to remove all callbacks from a Handler?
6 Answers
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Restore Eclipse subversion project connection
... in subversion, which I'm developing using Eclipse. I did the original checkout from the svn repository from inside Eclipse. All was well for some weeks then for some unknown reason, Eclipse (specifically: subclipse in Ganymede) no longer recognizes my project as being under svn control. The team co...
Does Android support near real time push notification?
... they'll continue to support GCM because lot of developers are using GCM SDKs today to handle notifications, and client app upgrade takes time.
As of June 26, 2012, Google Cloud Messaging is the preferred way of sending messages to applications running on devices.
Previously (and now deprecated), ...
Concatenate multiple files but include filename as section headers
I would like to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each file to precede the "data dump" for that file. Anyone know how to do this?
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Downloading a large file using curl
... edited Dec 19 '15 at 2:44
K-Gun
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answered Jun 20 '11 at 9:56
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Parameterize an SQL IN clause
...e a query containing an IN clause with a variable number of arguments, like this one?
40 Answers
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Copy / Put text on the clipboard with FireFox, Safari and Chrome
...nt.getElementById('myText').select();
To invisibly copy text you can quickly generate a textArea, modify the text in the box, select it, copy it, and then delete the textArea. In most cases this textArea wont even flash onto the screen.
For security reasons, browsers will only allow you copy if ...
Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
Looking for quick, simple way in Java to change this string
29 Answers
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