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What are the differences between concepts and template constraints?
...nition.
In Design of Concept Libraries for C++, Sutton and Stroustrup consider the following relationship:
Concepts = Constraints + Axioms
To quickly summarise their meanings:
Constraint - A predicate over statically evaluable properties of a type. Purely syntactic requirements. Not a domai...
create a trusted self-signed SSL cert for localhost (for use with Express/Node)
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Step 1. in your backend, create a folder called security. we will work inside it.
Step 2. create a request config file named req.cnf with the following content (credit goes to: @Anshul)
req.cnf :
[req]
distinguished_name = req_distinguished_name
x509_extensions = v3_req
prompt = no
[req_distingu...
What Every Programmer Should Know About Memory?
...r's What Every Programmer Should Know About Memory from 2007 is still valid. Also I could not find a newer version than 1.0 or an errata.
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When monkey patching an instance method, can you call the overridden method from the new implementat
Say I am monkey patching a method in a class, how could I call the overridden method from the overriding method? I.e. Something a bit like super
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Drawing Isometric game worlds
...e for the "zig-zag" technique for mapping the tiles to the screen can be said that the tile's x and y coordinates are on the vertical and horizontal axes.
"Drawing in a diamond" approach:
By drawing an isometric map using "drawing in a diamond", which I believe refers to just rendering the map by ...
Where do you store your salt strings?
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I will provide a slightly different take on this.
I always store the salt mixed in with the salted-password hash.
For example, I will place the first half of the salt before the salted-hash of the password, and the last half of the sa...
Where does Scala look for implicits?
... This pattern enables the provision of common interfaces to classes which did not declare them. It can both serve as a bridge pattern -- gaining separation of concerns -- and as an adapter pattern.
The Integral class you mentioned is a classic example of type class pattern. Another example on Scala...
What are type lambdas in Scala and what are their benefits?
...uite a bit of the time when you are working with higher-kinded types.
Consider a simple example of defining a monad for the right projection of Either[A, B]. The monad typeclass looks like this:
trait Monad[M[_]] {
def point[A](a: A): M[A]
def bind[A, B](m: M[A])(f: A => M[B]): M[B]
}
Now...
Making an iframe responsive
... an iFrame responsive?", and one of the comments/answers led me to this jfiddle.
23 Answers
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Struct constructor: “fields must be fully assigned before control is returned to the caller.”
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Tried this. didn't work for me - but I am using auto properties
– Roger Willcocks
Nov 26 '12 at 23:49
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