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Methods can be impure

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Fixes #385.
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Laurenz 2023-03-27 22:54:21 +02:00
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docs/src/reference/types.md
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@ -822,6 +822,10 @@ In Typst, all functions are _pure._ This means that for the same
arguments, they always return the same result. They cannot "remember" things to arguments, they always return the same result. They cannot "remember" things to
produce another value when they are called a second time. produce another value when they are called a second time.
The only exception are built-in methods like
[`array.push(value)`]($type/array.push). These can modify the values they are
called on.
## Methods ## Methods
### with() ### with()
Returns a new function that has the given arguments pre-applied. Returns a new function that has the given arguments pre-applied.