optparse_applicative

An option that always fails.

Builder for an argument parser.

Builder for a BigDecimal argument.

Builder for an option taking a BigDecimal argument.

Builder for a BigInt argument.

Builder for an option taking a BigInt argument.

Generate a brief help text for a parser.

Builder for a Byte argument.

Builder for an option taking a Byte argument.

Builder for a Char argument.

Builder for an option taking a Char argument.

Generate descriptions for commands.

Add a command to a subparser option.

Null Option reader. All arguments will fail validation.

Builder for a Double argument.

Builder for an option taking a Double argument.

Convert a function in the Either monad to a reader.

The default value of a Parser. This function returns an error if any of the options don't have a default value

Builder for a flag parser.

Builder for a flag parser without a default value.

Builder for a Float argument.

Builder for an option taking a Float argument.

Turns an unsafe conversion function into a reader by catching non-fatal exceptions.

Generate a full help text for a parser.

Specify the help text for an option.

Specify the help Doc.

A hidden "helper" option which always fails

Hide this option from the brief description.

Trivial option modifier.

An option that always fails and displays a message.

Builder for a Int argument.

Builder for an option taking a Int argument.

Create a parser composed of a single operation.

Specify a long name for an option.

Builder for a Long argument.

Builder for an option taking a Long argument.

Map a polymorphic function over all the options of a parser, and collect the results in a list.

Specify a metavariable for the argument.

Metavariables have no effect on the parser, and only serve to specify the symbolic name for an argument to be displayed in the help text.

Specify the error to display when no argument is provided to this option.

Generate description for a single option.

Generate a ParserFailure from a ParseError in a given Context.

Generate the help text for a program.

Generate option summary.

Specify a short program description.

Apply a Parser to a command line, and return a result and leftover arguments. This function returns an error if any parsing error occurs, or if any options are missing and don't have a default value.

Specify a short name for an option.

Builder for a Short argument.

Builder for an option taking a Short argument.

Show the default value for this option using its Show instance.

Specify a function to show the default value for an option.

Builder for a String argument.

Builder for an option taking a String argument.

Builder for a command parser. The command modifier can be used to specify individual commands.

Builder for a boolean flag.

Like mapParser, but collect the results in a tree structure.

Specify a default value for an option.

BigDecimal reader

BigInt reader

Byte reader

Char reader

Double reader

Float reader

Int reader.

Long reader

Short reader

String reader.