kristopherjohnson

// F#'s "pipe-forward" |> operator
//
// Also "Optional-chaining" operators |>! and |>&
//
// And adapters for standard library map/filter/sorted

infix operator |>   { precedence 50 associativity left }
infix operator |>!  { precedence 50 associativity left }
infix operator |>&  { precedence 50 associativity left }
infix operator |>*  { precedence 50 associativity left }

jstn

/*
    `arc4random_uniform` is very useful but limited to `UInt32`.
 
    This defines a generic version of `arc4random` for any type
    expressible by an integer literal, and extends some numeric
    types with a `random` method that mitigates for modulo bias
    in the same manner as `arc4random`.
 
    `lower` is inclusive and `upper` is exclusive, thus:
 

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

tomconroy

class Event <T:Any> {
    var handlers = Array<(T) -> Void>()
    
    func listen(handler: (T) -> Void) {
        handlers.append(handler)
    }
    
    func emit(object: T) {
        for handler in handlers {
            handler(object)

nrc

Rust developer tools - status and strategy

Availability and quality of developer tools are an important factor in the success of a programming language. C/C++ has remained dominant in the systems space in part because of the huge number of tools tailored to these lanaguages. Succesful modern languages have had excellent tool support (Java in particular, Scala, Javascript, etc.). Finally, LLVM has been successful in part because it is much easier to extend than GCC. So far, Rust has done pretty well with developer tools, we have a compiler which produces good quality code in reasonable time, good support for debug symbols which lets us leverage C++/lanaguge agnostic tools such as debuggers, profilers, etc., there are also syntax highlighting, cross-reference, code completion, and documentation tools.

In this document I want to layout what Rust tools exist and where to find them, highlight opportunities for tool developement in the short and long term, and start a discussion about where to focus our time an

marcprux

//
//  Demonstration of using a channel to receive and dispatch IOHIDManager events using the ChannelZ framework.
//
//  Created by Marc Prud'hommeaux on 3/8/15.
//
import Cocoa
import IOKit
import ChannelZ

@NSApplicationMain

densa

+(double)distanceBetweenPoint:(CGPoint)pointA andAnotherPoint:(CGPoint)pointB
{
    return sqrt((pointA.x - pointB.x)*(pointA.x - pointB.x) + (pointA.y - pointB.y)*(pointA.y - pointB.y));
}

+(NSArray *)findPointOnTangentOnCircleWithCenter:(CGPoint)center Radius:(double)radius pointOnTangent:(CGPoint)point
{
    double dx = center.x - point.x;
    double dy = center.y - point.y;
    double distance = [EXMathBrain distanceBetweenPoint:center andAnotherPoint:point];

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

epohs

#!/usr/bin/env xcrun swift -i

import Foundation
import Darwin.ncurses

initscr()                   // Init window. Must be first
cbreak()
noecho()                    // Don't echo user input
nonl()                      // Disable newline mode
intrflush(stdscr, true)     // Prevent flush

ericandrewlewis

C++ Pointer Tutorial

Because pointers can be ugh

"Regular" variables (not pointers)

To understand a pointer, let's review "regular" variables first. If you're familiar with a programming language without pointers like JavaScript, this is what you think when you hear "variable".

When declaring a variable by identifier (or name), the variable is synonymous with its value.