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docs(tutorial): Split out into a module
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@epage
epage committed Sep 12, 2023
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72 changes: 36 additions & 36 deletions src/_derive/_tutorial.rs → src/_derive/_tutorial/mod.rs
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//! ```
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/01_quick.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/01_quick.rs")]
//! ```
//!
#![doc = include_str!("../../examples/tutorial_derive/01_quick.md")]
#![doc = include_str!("../../../examples/tutorial_derive/01_quick.md")]
//!
//! ## Configuring the Parser
//!
//! You use derive [`Parser`][crate::Parser] to start building a parser.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/02_apps.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/02_apps.rs")]
//! ```
//!
#![doc = include_str!("../../examples/tutorial_derive/02_apps.md")]
#![doc = include_str!("../../../examples/tutorial_derive/02_apps.md")]
//!
//! You can use [`#[command(author, version, about)]` attribute defaults][super#command-attributes] on the struct to fill these fields in from your `Cargo.toml` file.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/02_crate.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/02_crate.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/02_crate.md")]
#![doc = include_str!("../../../examples/tutorial_derive/02_crate.md")]
//!
//! You can use `#[command]` attributes on the struct to change the application level behavior of clap. Any [`Command`][crate::Command] builder function can be used as an attribute, like [`Command::next_line_help`].
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/02_app_settings.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/02_app_settings.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/02_app_settings.md")]
#![doc = include_str!("../../../examples/tutorial_derive/02_app_settings.md")]
//!
//! ## Adding Arguments
//!
Expand All @@ -78,16 +78,16 @@
//! You can have users specify values by their position on the command-line:
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_03_positional.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_03_positional.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_03_positional.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_03_positional.md")]
//!
//! Note that the [default `ArgAction` is `Set`][super#arg-types]. To
//! accept multiple values, override the [action][Arg::action] with [`Append`][crate::ArgAction::Append] via `Vec`:
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_03_positional_mult.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_03_positional_mult.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_03_positional_mult.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_03_positional_mult.md")]
//!
//! ### Options
//!
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//! `#[arg(short)]`), the flag is inferred from the field's name.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_02_option.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_02_option.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_02_option.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_02_option.md")]
//!
//! Note that the [default `ArgAction` is `Set`][super#arg-types]. To
//! accept multiple occurrences, override the [action][Arg::action] with [`Append`][crate::ArgAction::Append] via `Vec`:
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_02_option_mult.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_02_option_mult.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_02_option_mult.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_02_option_mult.md")]
//!
//! ### Flags
//!
//! Flags can also be switches that can be on/off:
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_01_flag_bool.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_01_flag_bool.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_01_flag_bool.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_01_flag_bool.md")]
//!
//! Note that the [default `ArgAction` for a `bool` field is
//! `SetTrue`][super#arg-types]. To accept multiple flags, override the [action][Arg::action] with
//! [`Count`][crate::ArgAction::Count]:
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_01_flag_count.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_01_flag_count.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_01_flag_count.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_01_flag_count.md")]
//!
//! This also shows that any[`Arg`][crate::Args] method may be used as an attribute.
//!
Expand All @@ -140,15 +140,15 @@
//! and even its own subcommands.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_04_subcommands.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_04_subcommands.rs")]
//! ```
//! We used a struct-variant to define the `add` subcommand.
//! Alternatively, you can use a struct for your subcommand's arguments:
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_04_subcommands_alt.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_04_subcommands_alt.rs")]
//! ```
//!
#![doc = include_str!("../../examples/tutorial_derive/03_04_subcommands.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_04_subcommands.md")]
//!
//! ### Defaults
//!
Expand All @@ -157,9 +157,9 @@
//! set [`#[arg(default_value_t)]`][super#arg-attributes].
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/03_05_default_values.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/03_05_default_values.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/03_05_default_values.md")]
#![doc = include_str!("../../../examples/tutorial_derive/03_05_default_values.md")]
//!
//! ## Validation
//!
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//! of the mistake, and what the possible valid values are
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/04_01_enum.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/04_01_enum.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/04_01_enum.md")]
#![doc = include_str!("../../../examples/tutorial_derive/04_01_enum.md")]
//!
//! ### Validated values
//!
//! More generally, you can validate and parse into any data type with [`Arg::value_parser`].
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/04_02_parse.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/04_02_parse.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/04_02_parse.md")]
#![doc = include_str!("../../../examples/tutorial_derive/04_02_parse.md")]
//!
//! A [custom parser][TypedValueParser] can be used to improve the error messages or provide additional validation:
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/04_02_validate.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/04_02_validate.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/04_02_validate.md")]
#![doc = include_str!("../../../examples/tutorial_derive/04_02_validate.md")]
//!
//! See [`Arg::value_parser`][crate::Arg::value_parser] for more details.
//!
Expand All @@ -216,26 +216,26 @@
//! [`ArgGroup::id`][crate::ArgGroup::id] being the struct's name.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/04_03_relations.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/04_03_relations.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/04_03_relations.md")]
#![doc = include_str!("../../../examples/tutorial_derive/04_03_relations.md")]
//!
//! ### Custom Validation
//!
//! As a last resort, you can create custom errors with the basics of clap's formatting.
//!
//! ```rust
#![doc = include_str!("../../examples/tutorial_derive/04_04_custom.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/04_04_custom.rs")]
//! ```
#![doc = include_str!("../../examples/tutorial_derive/04_04_custom.md")]
#![doc = include_str!("../../../examples/tutorial_derive/04_04_custom.md")]
//!
//! ## Testing
//!
//! clap reports most development errors as `debug_assert!`s. Rather than checking every
//! subcommand, you should have a test that calls
//! [`Command::debug_assert`][crate::Command::debug_assert]:
//! ```rust,no_run
#![doc = include_str!("../../examples/tutorial_derive/05_01_assert.rs")]
#![doc = include_str!("../../../examples/tutorial_derive/05_01_assert.rs")]
//! ```
//!
//! ## Next Steps
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