Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.
A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x
| package main | |
| import ( | |
| "context" | |
| "flag" | |
| "fmt" | |
| "log" | |
| "net/http" | |
| "os" | |
| "os/signal" |
| // | |
| // Defines several helper macros for registering class by a string name and | |
| // creating them later per the registered name. | |
| // The motivation is to help implement the factory class. C++ doesn't support | |
| // reflection so we defines several macros to do this. | |
| // | |
| // All macros defined here are NOT used by final user directly, they are used | |
| // to create register macros for a specific base class. Here is an example: | |
| /* | |
| mapper.h (the interface definition): |
| // v2 of the great example of SSE in go by @ismasan. | |
| // includes fixes: | |
| // * infinite loop ending in panic | |
| // * closing a client twice | |
| // * potentially blocked listen() from closing a connection during multiplex step. | |
| package main | |
| import ( | |
| "fmt" | |
| "log" |