- They try to trademark the words "Rust" and "Cargo" which are common words in the English language
- You can not use "rust" in your domain name(?!), course name, video name, whatever, unless approved by the foundation
- Trying to impose a "Rust Foundation" approved CoC to all on- and off-line communities or events revolving around the language (the language, not foundation!)
- All off-line events about Rust need to ban their participants from carrying firearms
- Overrule any existing fair-use rights by prohibiting any modification (other than scaling) to the logo
- You need to constantly state that you are not affiliated or endorsed by the Rust Foundation when talking about the language (e.g. you want to write a tutorial, book or even answer on Stack Overflow?)
There are two important concepts that can be generalized: - Substitution, the method of renaming and replacing variables - Abstraction, replacing a variable with another term (function) that can also serve as output
This should give you a more natural feel to concepts like parametrization or what it means that the solution to one function may be another function. Perhaps you might even look a bit into the simply typed lambda calculus which has given me yet more perspectives on the fundamentals of mathematics.