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Explain concept of wishful thinking and stubbing. Give examples.

balrog training example was the problematic one.

Some people tried to use a string in the function definition. Explain why this is wrong.

def yell(protagonist, 'you shall not pass'):

A list of common commands and what they do will be useful when they go through the mission and lecture.

Linux

• ls
• pwd
• cd
• cat
• nano
• vim
• mv
• rm
• cp

Git

• checkout
• init
• clone
• add
• commit
• mv
• rm
• diff
• status

Trainees need the exact commands to create a new branch, add, commit and push.

• accumulate
• fold
• fold_left
• fold_right
• reduce
• inject

Illustrate the above functions with concrete examples. Try to explain the big picture behind these functions.

Even after the lessons, many are confused about data abstraction and still cannot see when they're breaking abstraction barriers.

Write up common bugs.

Explain recursion, base case.