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
| /** | |
| * Make sure you include the following in your build.sbt | |
| "org.json4s" %% "json4s-core" % "3.2.10", | |
| "org.json4s" %% "json4s-jackson" % "3.2.10" | |
| */ | |
| import org.json4s._ | |
| import org.json4s.jackson.JsonMethods._ | |
| import org.json4s.JsonDSL._ | |
| case class Candidate(name:Option[String], age:Option[Int], party:Option[String]) |
| package org.scribe.builder.api; | |
| import java.util.regex.Matcher; | |
| import java.util.regex.Pattern; | |
| import org.scribe.exceptions.OAuthException; | |
| import org.scribe.extractors.AccessTokenExtractor; | |
| import org.scribe.model.OAuthConfig; | |
| import org.scribe.model.OAuthConstants; | |
| import org.scribe.model.OAuthRequest; |
| include $(GOROOT)/src/Make.inc | |
| GOFMT=gofmt -spaces=true -tabindent=false -tabwidth=4 | |
| all: | |
| $(GC) jsontest.go | |
| $(LD) -o jsontest.out jsontest.$O | |
| format: | |
| $(GOFMT) -w jsontest.go |
| code.google.com | |
| googleapis.com | |
| googleusercontent.com | |
| ytimg.com | |
| youtube.com | |
| youtube-nocookie.com | |
| bitbucket.org | |
| thepiratebay.se | |
| humblebundle.com | |
| plus.url.google.com |
| // Use Gists to store code you would like to remember later on | |
| console.log(window); // log the "window" object to the console |
| #include<stdio.h> | |
| #include<stdlib.h> | |
| #include<sys/socket.h> | |
| #include<features.h> | |
| #include<linux/if_packet.h> | |
| #include<linux/if_ether.h> | |
| #include<errno.h> | |
| #include<sys/ioctl.h> | |
| #include<net/if.h> | |
| #include<net/ethernet.h> |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #include <unistd.h> | |
| #include <errno.h> | |
| #include <fcntl.h> | |
| #include <sys/types.h> | |
| #include <sys/stat.h> | |
| #include <sys/io.h> |
| #include <stdio.h> | |
| #include <stdint.h> | |
| #include <unistd.h> | |
| #include <inttypes.h> | |
| #include <errno.h> | |
| #include <sys/ioctl.h> | |
| #include <sys/stat.h> | |
| #include <fcntl.h> | |
| #include <sys/utsname.h> |
| // weibo上有人说到https://github.com/joewalnes/websocketd，我想其原理大致如此（process-wrapper.c）: | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <sys/types.h> | |
| #include <sys/stat.h> | |
| #include <fcntl.h> | |
| int wrap_process(const char* exefile) { |