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Predicate in Java
...ate by creating an interface for an object that represents a predicate and then one provides a class that implements that interface. An example of an interface for a predicate might be:
public interface Predicate<ARGTYPE>
{
public boolean evaluate(ARGTYPE arg);
}
And then you might hav...
Preferred Github workflow for updating a pull request after code review
...e4e32b8 add test case as per PR comments
And close your editor. Git will then rewrite the history and prompt you to provide a commit message for the one combined commit. Amend accordingly and your commit history will now be concise:
$ git log --oneline parent/master..master
9de3202 fixing actual ...
Why do we need a pure virtual destructor in C++?
...
"yes pure virtual functions can have implementations" Then it's not pure virtual.
– GManNickG
Aug 2 '09 at 19:37
2
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Does a const reference class member prolong the life of a temporary?
... scope left the constructor, the string instance was destroyed, and member then pointed to a string object that no longer existed. Having Sandbox.member point to a reference outside its scope will not hold those external instances in scope.
If you want to fix your program to display the behavior yo...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...ion, such as with a message queue system or streaming log entries to disk, then you may well prefer a binary encoding to emphasize the compact size. Otherwise it's a case by case issue with different environments.
Some environments can have very fast serialization and deserialization to/from msgpa...
Good examples of MVVM Template
...ted in a separate control. The default data template for a ViewModel would then look something like this:
<DataTemplate DataType="{x:Type vmodels:AddressEditViewModel}">
<views:AddressEditView DataContext="{Binding}" />
</DataTemplate>
The dialog view needs to have access to ...
In SQL Server, when should you use GO and when should you use semi-colon ;?
...u might specify that statements end with two pipe characters ||. You could then issue CREATE PROCEDURE ... much SQL ending in ; ... || and the double pipe ends the CREATE PROCEDURE statement. So my question is whether this is analgous to the MS GO statement? Secondly, can you redefine the terminatio...
Android: AsyncTask vs Service
...a button is pressed, you could start a service, let it fetch the data, and then stop it, but this is inefficient. It is far faster to use an AsyncTask that will run once, return the data, and be done.
If you need to be continually doing something in the background, though, a Service is your best be...
What does gcc's ffast-math actually do?
..., only faster. However, if your code assumes and relies on these promises, then your code may behave differently than you expect. Usually, this means that the program will seem to work fine, mostly, but some outcomes may be "unexpected" (say, in a physics simulation, two objects might not collide pr...
Should I use #define, enum or const?
... of flags is what it's for. Do
typedef std::bitset<4> RecordType;
then
static const RecordType xNew(1);
static const RecordType xDeleted(2);
static const RecordType xModified(4);
static const RecordType xExisting(8);
Because there are a bunch of operator overloads for bitset, you can now...