Your Coding Teacher

Things evaluated during a coding interview: - Analytical skills - Coding skills - Communication skills - Experience - Technical knowledge It's not just coding. But it doesn't mean coding skills are not essential.

Think twice before you start programming or you will program twice before you start thinking

Benefits of Test Driven Development - Confidence to make changes: you've written a nice test suite - Documentation: tests show how to use the code - Force to think about good design: you need to decouple modules in order to unit test them However, it's no panacea

Coding is not about learning programming languages. It is about analyzing a problem, considering different solutions, choosing the best one, and then implementing it in some programming language.

"It's OK to figure out murder mysteries, but you shouldn't need to figure out code. You should be able to read it." - Steve McConnell

Sources of bugs: - Memory allocation char* ptr; cin >> ptr; - Off-by-one int v[5]; for (i=0; i<=5; i++) f(v[i]); - No base case in recursion int fib(int n) { return fib(n-1) + fib(n-2); } - Not updating index in while loop while(i>2){ f(); }

6 Common string interview questions 1. Reverse a string 2. Reverse all words in a string 3. Remove duplicates in a string 4. Print all permutations of a string 5. Check if two strings are anagrams 6. Check if a string is a palindrome Try to solve them (easily googable)

Ethereum is considered “the world computer.” Do you know what that means?

"Syntactic sugar causes cancer of the semicolon." - Alan J. Perlis

5 Random coding tips Modularize your code Improve your communication skills Learn to learn Collaborate cross-team Learn to delegate

"Walking on water and developing software from a specification are easy if both are frozen." - Edward V. Berard

Counting sort is applicable when each input is known to belong to a particular set, S, of possibilities.

Design patterns in 1 tweet There are 3 main types of design patterns - Behavioural. How do objects interact. Ex: Template - Creational. How to create objects. Ex: Builder, Prototype - Structural. How objects are composed to form larger structures. Ex:Adapter, Proxy

ssh 101 - ssh stands for secure shell and is used to securely connect to remote hosts - ssh creates a TCP connection on port 22 - Syntax: ssh username@hostname (or ip address)

"Intelligence is the ability to avoid doing work, yet getting the work done." - Linus Torvalds

Java in 1995 by James Gosling at Sun Microsystems - Originally called Oak - OOP language - Write Once Run Anywhere philosophy - Java applications run on JVMs (machine independent code) - 3 billion devices currently run Java System.out.println("Hello, World!");

7 tips to work more efficiently 1. Have a definition of done for your tasks 2. Define their scope 3. Time estimates are hard 4. Have a rule to decide when to automate a task 5. Work incrementally 6. Premature optimization is the root of all evil 7. Get a rubber duck

Don't afraid of your ignorance. If you don't understand how something works, ask someone who does. Not knowing something doesn't mean you're dumb. It just means you don't know it yet.

Always try to do something a little harder. Something that is outside your reach.

It's one thing to go learn a language for fun, but until you write some a big, complex system in it, you don't fully learn it.