teaching machines

CS 145 Lecture 12 – Relational Operators

September 30, 2015 by Chris Johnson. Filed under cs145, fall 2015, lectures.

Agenda

• what ?s
• logic
• logic in Scratch
• relational operators

TODO

• Read section 5.3. Share on a 1/4 sheet 2-3 questions, observations, or relational or logical expressions that you encounter in life.

Note

1. someone is eligible for Social Security
   show
2. the batter can walk to first base
   show
3. someone is polygamous
   show
4. someone’s guessed the wrong number
   show
5. someone who’s been drinking can drive legally
   show
6. your love’s name is tattooable on your knuckles
   show
7. a string is blank
   show
8. a number of the format “(#)” is bigger than 100
   show

Code

Relating.java

/usr/lib/ruby/2.7.0/rubygems/dependency.rb:311:in `to_specs': Could not find 'coderay' (>= 0) among 56 total gem(s) (Gem::MissingSpecError)
Checked in 'GEM_PATH=/.gem/ruby/2.7.0:/var/lib/gems/2.7.0:/usr/lib/ruby/gems/2.7.0:/usr/share/rubygems-integration/2.7.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.7.0:/home/johnch/.gems', execute `gem env` for more information
	from /usr/lib/ruby/2.7.0/rubygems/dependency.rb:323:in `to_spec'
	from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_gem.rb:62:in `gem'
	from ./coderay:24:in `
'

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