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64 lines
1.2 KiB
Markdown
64 lines
1.2 KiB
Markdown
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[tisgal, `=<`, %tsgl](#tsgl)
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============================
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Product as subject, inverse
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`=<` is a synthetic rune that uses the product of `q` as the subject of
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`p`. `=<` is the inverse of `=>`. Use `=<` when your computation, `q` is
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lengthier and `=<` makes for more readable code.
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See also
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--------
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[tisgar, `=>`, %tsgr](#tsgr)
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============================
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Produces
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--------
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Twig: `[%tsgl p=twig q=twig]`
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Sample
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------
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`p` and `q` are [twig]()s.
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Tall form
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---------
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=< p
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q
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Wide form
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---------
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=<(p q)
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Irregular form
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--------------
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p:q
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Examples
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--------
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~zod/try=> b:[a=1 b=2 c=3]
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2
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~zod/try=> [. .]:(add 2 4)
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[6 6]
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In this simple example we first produce `b` from the tuple
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`[a=1 b=2 c=3]` using the irregular form of `=<`. Then we use `.` to
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produce our context from the computation `(add 2 4)` as a cell, `[6 6]`.
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~zod/try=> =< lom
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|%
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++ lom (add 2 tak)
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++ tak 4
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--
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6
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This example is a more common case, where we want to pull some specific
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value out of a longer computation. Here we use the tall form of `=<` to
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pull the arm `lom` from the core created with [`|%`]().
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