From 48f39402181d959cad88cb3f460210c007169f50 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= Date: Wed, 12 May 2021 11:13:47 +0200 Subject: Cowboy 2.9.0 --- .../manual/cowboy_constraints.nonempty/index.html | 203 +++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 docs/en/cowboy/2.9/manual/cowboy_constraints.nonempty/index.html (limited to 'docs/en/cowboy/2.9/manual/cowboy_constraints.nonempty/index.html') diff --git a/docs/en/cowboy/2.9/manual/cowboy_constraints.nonempty/index.html b/docs/en/cowboy/2.9/manual/cowboy_constraints.nonempty/index.html new file mode 100644 index 00000000..6b393c0b --- /dev/null +++ b/docs/en/cowboy/2.9/manual/cowboy_constraints.nonempty/index.html @@ -0,0 +1,203 @@ + + + + + + + + + + Nine Nines: cowboy_constraints:nonempty(3) + + + + + + + + + + + + + + +
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cowboy_constraints:nonempty(3)

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Name

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cowboy_constraints:nonempty - Non-empty constraint

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Description

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Constraint functions implement a number of different operations.

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nonempty(forward | reverse, <<>>) -> {error, empty}
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Reject empty values.

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nonempty(forward | reverse, Bin) -> {ok, Bin}
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+Bin :: binary()
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Accept any other binary values.

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nonempty(format_error, Error) -> HumanReadable
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+Error         :: {empty, Bin}
+HumanReadable :: iolist()
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Generate a human-readable error message.

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Arguments

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Arguments vary depending on the operation. Constraint functions always take the operation type as first argument, and the value as second argument.

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Return value

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The return value varies depending on the operation.

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Changelog

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  • 2.0: Interface modified to allow for a variety of operations. +
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  • 1.0: Constraint introduced. +
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Examples

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This function is not meant to be called directly.

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See also

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cowboy_constraints(3), cowboy_constraints:int(3), cowboy_router(3), cowboy_req:match_cookies(3), cowboy_req:match_qs(3)

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