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Hibernate throws org.hibernate.AnnotationException: No identifier specified for entity: com..domain.
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Using a wrapper type is a better choice when using Hibernate because, by checking if the id is null or not, Hibernate can better determine if an entity is transient (it does not have an associated table row) or detached (it has an associated table row, but it's not managed by the current Persis...
Is there a benefit to defining a class inside another class in Python?
...that you can accomplish exactly the same (perhaps in a less confusing way) by using a module.
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How to make a variadic macro (variable number of arguments)
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C99 way, also supported by VC++ compiler.
#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__)
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namespaces for enum types - best practices
...d Principle: Class should be closed for modifying, but open for extending. By extending I mean not adding to the existing code, but wrapping over it with the new code (eg. deriving).
– SasQ
Dec 12 '12 at 2:31
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How do I add a library project to Android Studio?
...has changed.
My description is focused on adding external library project by hand via Gradle files (for better understanding the process). If you want to add a library via Android Studio creator just check the answer below with visual guide (there are some differences between Android Studio 1.0 and...
How to detect if a variable is an array
...oundaries as each frame has its own Array object. You can work around this by checking the internal [[Class]] property of the object. To get it, use Object.prototype.toString() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will onl...
github: No supported authentication methods available
...sion is probably accessed through plink and your keys are probably managed by Pageant.
Import the key you need each time you load Pageant. If you followed guides that said "import your key", and saw that it worked, but it doesn't work now, see Chapter 9: Using Pageant for authentication.
One last t...
What is this: [Ljava.lang.Object;?
... an array type then the binary name of the class is returned, as specified by the Java Language Specification (§13.1).
If this class object represents a primitive type or void, then the name returned is the Java language keyword corresponding to the primitive type or void.
If this class ...
HTTP headers in Websockets client API
...WebSockets API, but it seems they are just developing the API on an island by itself.
– eleotlecram
May 1 '12 at 14:26
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symbolic link: find all files that link to this file
...urse, as any of the files pointing to foo.txt may themselves be pointed-at by some other links... ex: A->B->foo.txt, /tmp/C->B->foo.txt, etc.
– Olivier Dulac
Nov 7 '13 at 17:31
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