Liam Goodacre

What I can remember learning from various languages and technologies

An incomplete list and not in any particular order.

Visual Basic

• Types
• Values
• Conditions
• Loops
• Procedures (subroutines)
• Event driven style
• Assignment

JavaScript

• Procedure expressions
  • E.g. A callback system
• Closures
• Function scope
• Observer pattern
• Type coersion
• Module pattern
  • Revealing module style
  • CommonJS style
• Hash map data structure
• JSON

jQuery

• Call chaining

C

• Memory allocation
• Pointers
• References
• Preprocessor Macros
• Block scope

C#

• Classes and Objects
• Inheritance
• Polymorphism
• Linked Lists
• Array Lists

Objective-C

• Messaging
• Interfaces (Protocols)

Java

• Decorator pattern
• String Buffers
• String Builders
• Iterators
• Threads

Clojure

• Lambda expressions
• Code as Data
• Macros and Quoting
• Keywords
• Destructuring (Pattern matching)
• Futures
• Functional Programming
  • Map
  • Folding
  • Laziness
  • Tail-recursion
  • Recursive Accumulators
  • Immutability

Haskell

• Function composition
• Point-free programming
• Monads (NOTE:Still learning)

PHP

• Output buffers

Qt

• Signals and Slots

CSS

• Prescedence Value

Ruby

• Generators

Structural Operational Semantics

• Relations
• Pattern Matching by construction
• Preconditions and Postconditions
• Invariants

Lambda Calculus (and related concepts)

• SKI Combinators

C: void print_binary(int)

Quick C implementation of printing a 32-bit integer in it’s binary format.

Original:
http://tinypaste.com/62a96c

Improvement by joethought:
http://tinypaste.com/7507a

Final Algorithm:
http://tinypaste.com/fb3b3c

#define SIZE 32
#define MASK 1 << (SIZE - 1)
void print_binary(int _value) {
    int count = SIZE;
    while (count--) {
        printf("%d", (_value & MASK)!=0);
        _value = _value << 1;
    }
}

EDIT NOTE: Listed progression through states.