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Specifying an Index (Non-Unique Key) Using JPA
...n only be used as part of another annotation like @Table, @SecondaryTable, etc.:
@Table(indexes = { @Index(...) })
JDO 2.1+: javax.jdo.annotations.Index
= ORM Frameworks =
♥ Hibernate ORM: org.hibernate.annotations.Index;
OpenJPA: org.apache.openjpa.persistence.jdbc.Index and org.apache.open...
How to elegantly ignore some return values of a MATLAB function?
...can then call
val_i_want = kthout(3,@myfunc,func_input_1,func_input_2); %etc
you could also wrap up the function like
func_i_want = @(varargin)(kthout(3,@myfunc,varargin{:})); %assuming you want the 3rd output.
after which you use
val_i_want = func_i_want(func_input_1,func_input_2);
note ...
Warning: push.default is unset; its implicit value is changing in Git 2.0
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Java system properties and environment variables
...in Linux export HOME=/Users/myusername or on Windows SET WINDIR=C:\Windows etc,
and, unlike properties, may not be set at runtime.
To get a specific environment variable you can use System.getenv(String name).
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Reuse a parameter in String.format?
...gument list. The first argument is referenced by "1$", the second by "2$", etc.
String.format("%1$s %1$s %1$s %1$s %1$s %1$s", hello);
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What are database normal forms and can you give examples? [closed]
...ho came up with the idea of relational databases - things relying on keys, etc., so he would be the authority to go by in the case of relational databases.
– Smashery
Aug 12 '10 at 2:48
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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)
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In order to successfully access property values using the SpEL syntax, use the format "#{'${property}'}"
– Brice Roncace
Apr 6 '16 at 20:23
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Execute SQLite script
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In order to execute simple queries and return to my shell script, I think this works well:
$ sqlite3 example.db 'SELECT * FROM some_table;'
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Why Response.Redirect causes System.Threading.ThreadAbortException?
... handler is ugly because you are terminating a partially generated page in order to generate a different page. MVC does not have this problem since the control flow is separate from rendering views, so you can do a clean redirect by simply returning a RedirectAction in the controller, without genera...
Is iterating ConcurrentHashMap values thread safe?
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