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What is the easiest way to ignore a JPA field during persistence?
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But then jackson will not serialize the field when converting to JSON...how to solve?
– MobileMon
Jan 20 '16 at 3:44
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MVC Razor dynamic model, 'object' does not contain definition for 'PropertyName'
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On .NET 4.0 Anonymous types can easily be converted to ExpandoObjects and thus all the problems are fixed with the overhead of the conversion itself.
Check out here
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std::auto_ptr to std::unique_ptr
...a unique_ptr can only be moved. Anything that looks like
std::auto_ptr<int> p(new int);
std::auto_ptr<int> p2 = p;
will have to become at least like this
std::unique_ptr<int> p(new int);
std::unique_ptr<int> p2 = std::move(p);
As for other differences, unique_ptr can h...
Difference between final and effectively final
...statement in the PhoneNumber constructor:
public class OutterClass {
int numberLength; // <== not *final*
class PhoneNumber {
PhoneNumber(String phoneNumber) {
numberLength = 7; // <== assignment to numberLength
String currentNumber = phoneNumber.replaceAll(
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Error: Jump to case label
...ich does exist but probably contains garbage.
switch(foo) {
case 1:
int i = 42; // i exists all the way to the end of the switch
dostuff(i);
break;
case 2:
dostuff(i*2); // i is *also* in scope here, but is not initialized!
}
Wrapping the case in an explicit block solves the p...
C++ Erase vector element by value rather than by position? [duplicate]
... to get an iterator to a value:
#include <algorithm>
std::vector<int>::iterator position = std::find(myVector.begin(), myVector.end(), 8);
if (position != myVector.end()) // == myVector.end() means the element was not found
myVector.erase(position);
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SQL Server 2012 column identity increment jumping from 6 to 1000+ on 7th entry [duplicate]
I have a strange scenario in which the auto identity int column in my SQL Server 2012 database is not incrementing properly.
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Kotlin secondary constructor
...ctory method next to your class
fun C(s: String) = C(s.length)
class C(a: Int) { ... }
usage:
val c1 = C(1) // constructor
val c2 = C("str") // factory method
Technique 2. (may also be useful) Define default values for parameters
class C(name: String? = null) {...}
usage:
val c1 = C("foo")...
Missing Maven dependencies in Eclipse project
... FYI, I first had to right click on my project, go to Configure and "Convert to Maven project."
– duma
Jul 24 '14 at 16:10
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Does the default constructor initialize built-in types?
...mple, if your class has no user-declared constructor
class C {
public:
int x;
};
then the compiler will implicitly provide one. The compiler-provided constructor will do nothing, meaning that it will not initialize C::x
C c; // Compiler-provided default constructor is used
// Here `c.x` conta...