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What is a Portable Class Library?
On MSDN I noticed a section about a Portable Class Library , under Version Information.
4 Answers
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Confused about stdin, stdout and stderr?
...t the kernel level, it is all file descriptors (int references to the file table) and much lower-level operations like read and write, which do not do the happy buffering of the ISO C functions. I figured to keep it simple and use the easier functions, but I thought all the same you should know the ...
What's the role of GetHashCode in the IEqualityComparer in .NET?
...ds within the object that GetHashCode depends upon should be readonly (immutable). There's an explanation here: stackoverflow.com/a/4868940/469701
– sheikhjabootie
Jul 7 '13 at 10:28
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How to express a One-To-Many relationship in Django
...erated by django for you :-). We only need to define foreignKey in related table. In other words, we only need to define ManyToOne relation by using foreignKey.
class Car(models.Model):
// wheels = models.oneToMany() to get wheels of this car [**it is not required to define**].
class Wheel(mo...
What's the difference between :: (double colon) and -> (arrow) in PHP?
...ate and delete methods, since you can set the return value to the inserted table id and then use the constructor to instantiate the object by the row id.
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How to overload functions in javascript?
...he second argument, it would have to be passed as null (or some other detectable value) instead and your code would detect that:
obj.query("firstArg", null, "thirdArg");
Here's a jQuery example of optional arguments. both arguments are optional and take on default values if not passed:
clone:...
Using emit vs calling a signal as if it's a regular function in Qt
...s have been made. "under-the-hood" the signal and slot mechanism is just a table with pointers to every function that is connected.
Also, look at this pdf which explains very clearly the nature of the signals and slots mechanism:
http://www.elpauer.org/stuff/a_deeper_look_at_signals_and_slots.pdf
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Why does JPA have a @Transient annotation?
...gine a situation where you have a huge database with a lot of columns in a table, and your project/system uses tools to generate entities from database. (Hibernate has those, etc...)
Now, suppose that by your business logic you need a particular field NOT to be persisted. You have to "configure" yo...
Where are static methods and static variables stored in Java?
...ich is called Method Area. Even this answer is not wrong. It is just a debatable topic whether Permgen Area is a part of heap or not. Obviously perceptions differ from person to person. In my opinion we provide heap space and permgen space differently in JVM arguments. So it is a good assumption to ...
On design patterns: When should I use the singleton?
...my quest for the truth I discovered that there are actually very few "acceptable" reasons to use a Singleton.
One reason that tends to come up over and over again on the internets is that of a "logging" class (which you mentioned). In this case, a Singleton can be used instead of a single instance ...