forked from orion/obsidian
13 lines
356 B
Markdown
13 lines
356 B
Markdown
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A property of [[Purity|pure]] [[Functions|functions]] that they can always be replaced by the expression they return.
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For example `add` is referentially transparent, so
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```haskell
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a = add 1 3
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```
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could be replaced with
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```haskell
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a = 4
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```
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at design- or compile-time, because `add` always returns the same result and performs no observable side-effects.
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