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How do DATETIME values work in SQLite?
...t as a type or storage class. Yes, the documentation actually contains the word "DATETIME".
– Jasper
Oct 13 '17 at 11:41
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Calling C++ class methods via a function pointer
...nimal method pointer is not compatible with a Dog method pointer, in other words you can't assign a Dog* (*)() to a variable of type Animal* (*)().
The static newDog method is a simple example of a factory, which simply creates and returns new instances. Being a static function, it has a regular t...
Python logging not outputting anything
...gger:
'root':{'handlers':('console', 'file'), 'level':'DEBUG'}
In other words, it's not enough to define a handler with level=DEBUG, the actual logging level must also be DEBUG in order to get it to output anything.
share...
Pointers in Python?
... @d.w.: I like this way of thinking about it! "Binding" is a good word. @Ned: The output is the same, yes, but in C the value of "1" is copied to both a and b whereas in Python, they both refer to the same "1" (I think). Thus, if you could change the value of 1 (as with objects), it would b...
LINQ Aggregate algorithm explained
...
A picture is worth a thousand words
Reminder:
Func<X, Y, R> is a function with two inputs of type X and Y, that returns a result of type R.
Enumerable.Aggregate has three overloads:
Overload 1:
A Aggregate<A>(IEnumerable<A>...
Socket.io rooms difference between broadcast.to and sockets.in
...function(data){
/* Broadcast to room1 except the sender. In other word,
It broadcast all the socket clients which are connected
to the room1 except the sender */
socket.broadcast.to('room1').emit('function', {foo:bar});
}
}
Socket.io
i) io.sockets.e...
Find the Smallest Integer Not in a List
...emory. In the form the question was asked, this would require O(N) 64-bit words.)
@Jorn comments that steps 1 through 3 are a variation on counting sort. In a sense he is right, but the differences are significant:
A counting sort requires an array of (at least) Xmax - Xmin counters where Xma...
How to overlay one div over another div
...our properties to position the element:
top
right
bottom
left
In other words, by setting position: absolute, we can add top: 100px to position the element 100 pixels from the top of the page. Conversely, if we set bottom: 100px the element would be positioned 100 pixels from the bottom of the pa...
What is the difference between DAO and Repository patterns?
...ain table (if used for DB persistence).
DAO - data access object (in other words - object used to access data)
A DAO is a class that locates data for you (it is mostly a finder, but it's commonly used to also store the data). The pattern doesn't restrict you to store data of the same type, thus you ...
In C#, can a class inherit from another class and an interface?
... unfortunately, interfaces inherit other interfaces. I find that choice of words unfortunate, but we're stuck with it now. I prefer to think of interfaces as requiring other interfaces. That is, when you say "interface IFoo : IBar" that means "an implementor of IFoo is required to also implement IBa...