Thun/docs/reference/choice.md

# choice Basis Function Combinator Use a Boolean value to select one of two items. : A B false choice

A


A B true choice
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  B

Currently Python semantics are used to evaluate the "truthiness" of the Boolean value (so empty string, zero, etc. are counted as false, etc.)

Gentzen diagram.

Definition

if not basis.

Derivation

if not basis.

Source

if basis

Discussion

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Crosslinks

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