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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
... Foundation\apache-maven-3.0.4\bin;C:\Program Files\Java\jdk1.7.0_09\bin; [etc]
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Why does C# forbid generic attribute types?
...y, write lesser code than otherwise required, get benefits of polymorphism etc.
//an interface which means it can't have its own implementation.
//You might need to use extension methods on this interface for that.
public interface ValidatesAttribute<T>
{
T Value { get; } //or whatever t...
How to map calculated properties with JPA and Hibernate
...plex queries on other tables:
@Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)")
private Date firstOrderDate;
Where id is the id of the current entity.
The following blog post is worth the read: Hibernate Derived Properties - Performance and Portability.
Without mo...
What are forward declarations in C++?
...hat you expected.
So, just to keep things explicit and avoid the guessing etc, the compiler insists you declare everything before it is used.
Difference between declaration and definition
As an aside, it's important to know the difference between a declaration and a definition. A declaration jus...
What exactly are “spin-locks”?
...
When you use regular locks (mutexes, critical sections etc), operating system puts your thread in the WAIT state and preempts it by scheduling other threads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for ...
Editing screenshots in iTunes Connect after iOS app was approved
...onable to not be allowed to change the images themselves, but changing the order could still be allowed, which is all that the OP (or myself) want. Still, I can understand that it's a more coherent policy to just not allow editing of metadata outside of an update.
– PeterT
...
How to dynamically change a web page's title?
...nt the user to see the title matching the view he's on. For most web-apps etc. it seems like a good sollution to keep using this. I might have overlooked a different function though?
– Mathijs Segers
Aug 7 '13 at 8:55
...
how to prevent “directory already exists error” in a makefile when using mkdir
...BJDIR)
You should see here the usage of the | pipe operator, defining an order only prerequisite.
Meaning that the $(OBJDIR) target should be existent (instead of more recent) in order to build the current target.
Note that I used mkdir -p. The -p flag was added compared to the example of the doc...
How can I use grep to find a word inside a folder?
...nd texts "MobileAppSe", "MobileAppSer", "MobileAppSerr", "MobileAppSerrr", etc. in current directory's files contents - not what the user wants either.
– usta
Mar 27 '13 at 6:36
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What kinds of patterns could I enforce on the code to make it easier to translate to another program
...
My answer will address the specific task of parsing Python in order to translate it to another language, and not the higher-level aspects which Ira addressed well in his answer.
In short: do not use the parser module, there's an easier way.
The ast module, available since Python 2.6 i...