Lesson 06 of 55
8 mins readBooleans, Equality & Logical Operators
In Plain English
Explore boolean logic in Haskell: values True and False, equality test (==), not-equal test (/=), and logical conjunction/disjunction.
Deep Dive: How It Works
Not Equal (/=): Haskell uses /= for inequality (resembling the mathematical ≠ symbol), not !=.
Logical Functions: && (and), || (or), and not (unary negation).
Order Comparisons: <, <=, >, >= available for any type in the Ord typeclass.
Core Rules to Remember
Inequality Operator (/=): Haskell uses /= instead of != for not-equal checks.
Strict Boolean Types: Conditionals accept only true Bool values, preventing type coercion bugs.
Live Interactive Example
Hit Run Code to see it liveBoolean Operations and Comparisons
Python 3.12
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Output Console
Click "Run Code" to view the rendered output.
How it works: 10 /= 20 evaluates to True.
Your Turn: Micro Challenge
No pressure! Edit the starter code below and test your solution with instant feedback.
Micro Exercise
Verify Inequality Condition
- Evaluate `42 /= 99` and assign to `result`.
- Print `"Result: "` followed by `show result`.
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Sandbox Output
Click "Run & Check" to test your solution.
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