Your Coding Teacher

In C++, to prevent resource leaks, use RAII Resource Acquisition Is Initialization Acquire resources in constructors and release them in destructors

The first 90% of a project takes 90% of development time. The last 10% takes the other 90% of the time.

It's possible to "increase the available RAM" on a Linux machine using disk. The Linux virtual memory system can move data from memory disk and viceversa, in a process called swapping. The disk area used to store memory pages is called swap space.

Software is more like science that mathematics. You cannot prove that you'r software is correct (no bugs). You can write a bunch of tests to show that your code hasn't failed (so far).

Anything that can go wrong will go wrong Anything that can't go wrong will go wrong anyway

Coding is easy. Writing good code is hard.

Types of programming languages, based on "types": - Strongly vs Weakly typed -> whether you are required to declare types for variables/functions. - Statically vs Dynamically typed -> whether type checking is done at compile-time or run-time.

Merkle trees, also known as binary hash trees, are a type of binary tree. hey can be used to efficiently verify the integrity of large sets of data. They are used in both blockchain and non-blockchain-related projects.

"C++ is designed to allow you to express ideas, but if you don't have ideas or don't have any clue about how to express them, C++ doesn't offer much help." - Bjarne Stroustrup

"Code is like humor. When you have to explain it, it's bad." - Cory House

Blame doesn't fix bugs

Compiler warnings are to be taken seriously Otherwise, just disable them, at your own peril.

Be a doer. Not a talker.

"I do not fear computers. I fear the lack of them." - Isaac Asimov

Deleted code is debugged code

Challenges of building distributed systems: - How to connect different networks, OS, hardware, programming languages, ... - How to extend them - How to handle security - How to scale them: algorithms, concurrency, infrastructure, ... - How to make them fail-tolerant

Ruby was created by Yukihiro Matsumoto in 1995 - Combines ideas from various other languages like Perl, Small talk, BASIC, Lisp - Ruby is most commonly found in web development - It also includes dynamic typing and garbage collection puts 'Hello, world!'

In 2003, James Strachan created Groovy as an improvement on Java It is both a static and dynamic language with features similar to those of Python, Ruby, and Smalltalk. print "Hello World!\n"

Some "real life" applications of hash tables: - Compilers symbol tables: to keep track of variables - Games: from chessboard position to what to do next - Caches - DNS: from domain to server IP - Spell checkers: from wrong spelling to list of words the user meant to type

"Those who can imagine anything, can create the impossible." - Alan Turing