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Exercise Overview

1. Sequential Instruction Execution
   print; rect, circle, line, move, color
   Explanation | Skill: Print | Skill: Drawing
2. Variables and types
   num, string, bool, Declaration (typed, inferred). read
3. Flow control
   while, if, for
4. Operators
   1. num arithmetic: +, -, *, /, %
   2. string concatenation, indexing, slicing
   3. bool: and or !
   4. comparison == <= >= < > != (num & string)
   5. operator precedence
5. Factoring code
   func, parameters, arguments, return type and value
6. Structuring data
   arrays, maps; indexing, slicing, ranging
7. Miscellaneous:
   1. event handlers on
   2. \", \n, \t; printf, sprintf, %%;
   3. standard library: math, rand, string, advanced drawing
   4. errors err (eg failed str2num)
   5. any, reflection, type assertions
   6. variadic functions
8. Algorithms & data structures
   Trees, linked lists, recursion, search, sort, ...
9. Modules / importing