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Improve documentation of RDF.Graph.update/4

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Marcel Otto 2021-10-27 11:00:27 +02:00
parent 36a51cc7a2
commit 30078e7666
1 changed files with 3 additions and 2 deletions
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5
lib/rdf/graph.ex
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@ -448,8 +448,9 @@ defmodule RDF.Graph do
If `subject` is present in `graph` with `description` as description,
`fun` is invoked with argument `description` and its result is used as the new
description of `subject`. If `subject` is not present in `graph`,
`initial` is inserted as the description of `subject`. The initial value will
not be passed through the update function.
`initial` is inserted as the description of `subject`. If no `initial` value is
given, the `graph` remains unchanged. If `nil` is returned by `fun`, the
respective description will be removed from `graph`.
The initial value and the returned objects by the update function will be tried
te coerced to proper RDF descriptions before added. If the initial or returned