42 lines
795 B
Markdown
42 lines
795 B
Markdown
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# Supply
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An effect useful for generating an infinite supply of values.
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## Example
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```purescript
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-- Generates 2 values and adds them together
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foo :: forall r. Run (SUPPLY Int r) Int
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foo = ado
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a <- generate
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b <- generate
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in a + b
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-- | Runs `foo` by providing 2 as the starting value and adding 3 to each subsequent call.
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runnedFoo :: Int
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runnedFoo
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= foo -- Run (SUPPLY Int ()) Int
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# runSupply
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((+) 3) -- generates the next value
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2 -- initial value
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# extract -- Run () Int -> Int
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```
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For the full documentation check out [pursuit](TODO)
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## Development
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Building the package
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```
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spago build
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```
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Running the test suite
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```
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spago -x ./spago.test.dhall test
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```
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If you think a particular helper would be an useful addition, feel free to open an issue.
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