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When is memoization automatic in GHC Haskell?
...s of GHC that perform this kind of lifting with optimizations enabled will transform m2 into m1.
– Reid Barton
Oct 17 '10 at 15:36
...
CSS triangle custom border color
...der-right:1px solid #CAD5E0;
border-bottom:1px solid #CAD5E0;
-moz-transform:rotate(-45deg);
-webkit-transform:rotate(-45deg);
}
http://jsfiddle.net/4ZeCz/3/
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Domain Driven Design: Domain Service, Application Service
...duction To Domain-Driven Design describes application services as a way to transform and/or expose your domain model to external clients, e.g. as a WCF service. This is how Vijay describes application services too. From this point of view, application services are an interface to your domain.
Jeffr...
How can I quantify difference between two images?
...e detection algorithm first (e.g. calculate gradient with Sobel or Prewitt transform, apply some threshold), then compare edges on the first image to edges on the second.
Is there noise in the image?
All sensors pollute the image with some amount of noise. Low-cost sensors have more noise. You may ...
What is a stream?
...eyor out, that you connect to other streams and then the box performs some transformation on the data (zipping it, or changing UNIX linefeeds to DOS ones, or whatever). Pipes are another thorough test of the metaphor: that's where you create a pair of streams such that anything you write into one ca...
How do I decode a string with escaped unicode?
...cute some steps on each group of each match, and I can't do that by simply transforming the string. Helpfully, the String.replace operation can accept a function, which will be executed for each match. The return of that function will replace the match itself in the string.
I use the second parame...
Should services always return DTOs, or can they also return domain models?
...ame Application Layer for several UIs (APIs, Controllers) and each one can transform the model as it sees fit. Second, if we were to transform model-to-DTO in App. Layer, that would mean DTO is defined in App. Layer, which in turn means DTO is now part of our Bounded Context (not necessarily Domain!...
Why is a combiner needed for reduce method that converts type in java 8
...stream to the final reduced (green) value. The accumulator function simply transforms a String object into another String.
From String to int (parallel stream)
Suppose having the same 4 strings: your new goal is to sum their lengths, and you want to parallelize your stream.
What you need is somethin...
Why can't yield return appear inside a try block with a catch?
...es in the generated type, so you can freely move code to new methods
Now transform:
try
{
Console.WriteLine("a");
yield return 10;
Console.WriteLine("b");
}
catch (Something e)
{
Console.WriteLine("Catch block");
}
Console.WriteLine("Post");
into (sort of pseudo-code):
case jus...
Covariance, Invariance and Contravariance explained in plain English?
...t heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that A is a subtype of B), we have
f is covariant if A ≤ B implies that f(A) ≤ f(B)
f is contr...