Part III: Proving Things · Module 05

Unions and Narrowing

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Most real values are one of several things. Narrowing is how you prove which.

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01

Union Types

~14 min · live editor

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02

Narrowing

~15 min · live editor

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Practice Test

10 questions · 80% = mastery

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Typed Explorer Step 5: Make the Impossible Unrepresentable

Apply everything from this module

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