| #!/bin/sh | |
| # 1) Install Xcode 11 | |
| # 2) Install command line tools: `xcode-select --install` | |
| # 3) Install HomeBrew | |
| # 4) brew tap cartr/qt4 && brew install cartr/qt4/openssl@1.0 subversion rbenv | |
| # 5) Setup rbenv | |
| # 6) Run this command | |
| PKG_CONFIG_PATH="$(brew --prefix cartr/qt4/openssl@1.0)/lib/pkgconfig" \ |
| module type CELL = sig | |
| type 'a cell | |
| type 'a exp | |
| val return : 'a -> 'a exp | |
| val (>>=) : 'a exp -> ('a -> 'b exp) -> 'b exp | |
| val cell : 'a exp -> 'a cell exp | |
| val get : 'a cell -> 'a exp |
Let's solve the following physics problem using Symbolism, a computer algebra library for C#.
One strategy in a snowball fight is to throw a first snowball at a high angle over level ground. While your opponent is watching the first one, you throw a second one at a low angle and timed to arrive at your opponent before or at the same time as the first one.
Assume both snowballs are thrown with a speed of 25.0 m/s.
The first one is thrown at an angle of 70.0° with respect to the horizontal.
(by @andrestaltz)
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.
| # sudo gem install bson | |
| # sudo gem install bson_ext | |
| # sudo gem install yajl-ruby | |
| # sudo gem install json | |
| # sudo gem install msgpack | |
| require 'rubygems' | |
| require 'benchmark' | |
| require 'yaml' | |
| require 'bson' |