| #!/usr/bin/env ruby | |
| require 'watir-webdriver' | |
| require 'telegram/bot' | |
| Telegram.bots_config = { | |
| default: '<Telegram Bot token>', | |
| } | |
| Telegram.bot.get_updates |
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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
From years of watching master programmers, I have observed certain common patterns in their workflows. From years of coaching skilled journeyman programmers, I have observed the absence of those patterns. I have seen what a difference introducing the patterns can make. Here are ways effective programmers get the most out of their precious 3e9 seconds on the planet. The theme here is scaling your brain. The journeyman learns to solve bigger problems by solving more problems at once. The master learns to solve even bigger problems than that by solving fewer problems at once. Part of the wisdom is subdividing so that integrating the separate solutions will be a smaller problem than just solving them together.
Slicing - Take a big project, cut it into thin slices, and rearrange the slices to suit your context. I can always slice projects finer and I can always find new permutations of the slices that meet different needs
| ;; Some example error messages resulting from common mistakes | |
| ;; using Datomic 0.8.4138 | |
| (ns errors | |
| (:use [datomic.api :as d :only (db q)])) | |
| (def uri "datomic:mem://database") | |
| (d/create-database uri) |