A gentle introduction to Haskell by Hudak P.

By Hudak P.

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Getting ready Whenever you create a user-defined collection in D, the first decision to make is whether it should be a class, struct, mixin template, or union. Mixin templates are great for code reuse. They define code that can be copied (or mixed in) to another type, with parameterization. Unions are for the cases when you need the same block of memory to have multiple types, and are the least common in typical D code. Classes and structs are the backbone of user-defined types in D, and they have the most in common.

4. Receive the hello message we sent in the server. 5. Then, send each line of the message to the server, wait for the response, and print it out. receive(buffer); // wait for the server to say hello writeln("Server said: ", buffer[0 .. send(line); writeln("Server said: ", buffer[0 .. receive(buffer)]); } } Server Let's create a server by executing the following steps: 1. Create a Socket object. 2. Bind it to the listening address. 3. Call the listen() method to start listening. 4. Create a list of connectedClients objects and a SocketSet object for multiplexing.

Normalize to get Unicode characters into a consistent format. 2. toLower to convert everything to lowercase for consistency. 3. regex to strip out all but a small set of characters. 47 Phobos – The Standard Library 4. squeeze to collapse consecutive whitespace. 5. replace to change spaces into dashes. 6. take to get the right number of characters, then convert the result back to string. stdio; writeln("The title is: ", title); } How it works… D has excellent facilities to work with strings. Functions from all over Phobos are useful while performing string operations.

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