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@Basic(optional = false) vs @Column(nullable = false) in JPA
... the specification and read up about it.
Here is what the spec has to say:
http://download.oracle.com/otndocs/jcp/persistence-2.0-fr-oth-JSpec/
Basic(optional): Whether the value of the field or property may be
null. This is a hint and is disregarded for primitive types; it may be
used in sc...
How many files can I put in a directory?
...tion to this speed problem. I wrote a pretty detailed article about it at: http://www.olark.com/spw/2011/08/you-can-list-a-directory-with-8-million-files-but-not-with-ls/
The key take away is: use getdents() directly -- http://www.kernel.org/doc/man-pages/online/pages/man2/getdents.2.html rather th...
When does Java's Thread.sleep throw InterruptedException?
...
From Don't swallow interrupts
See the entire paper here:
http://www.ibm.com/developerworks/java/library/j-jtp05236/index.html?ca=drs-
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X-UA-Compatible is set to IE=edge, but it still doesn't stop Compatibility Mode
...ntranet sites you can do so in the web.config (IIS7) or through the custom HTTP headers in the web site's properties (IIS6) and set X-UA-Compatible there. The meta tag doesn't override IE's intranet setting in Compatibility View Settings, but if you set it at the hosting server it will override the...
Change File Extension Using C#
... = Path.ChangeExtension(myfile,".blah")
You should look this post too:
http://msdn.microsoft.com/en-us/library/system.io.path.changeextension.aspx
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Rails 3 datatypes?
...nto a column.
I hope that helps someone! Also, here's the official list: http://guides.rubyonrails.org/migrations.html#supported-types
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What is the dual table in Oracle?
...ystem function in a select statement:
e.g. select sysdate from dual;
See http://www.adp-gmbh.ch/ora/misc/dual.html
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How do I get an HttpContext object from HttpContextBase in ASP.NET MVC 1?
...g with some WebForms/MVC-agnostic tools, and I need to get an instance of HttpContext given a reference to an HttpContextBase object. I can't use HttpContext.Current because I need this to work asynchronously as well ( HttpContext.Current returns null during an asynchronous request). I'm aw...
Automatically start forever (node) on system restart
...ul stop. This script provisions the logrotate script as well.
Github url: https://github.com/zapty/forever-service
NOTE: I am the author of forever-service.
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Java, Classpath, Classloading => Multiple Versions of the same jar/project
...s may be a silly question for experienced coders. But I have a library (an http client) that some of the other frameworks/jars used in my project require. But all of them require different major versions like:
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