Struct getopts::Matches

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pub struct Matches {
    pub free: Vec<String>,
    /* private fields */
}
Expand description

The result of checking command line arguments. Contains a vector of matches and a vector of free strings.

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§free: Vec<String>

Free string fragments

Implementations§

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impl Matches

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pub fn opt_defined(&self, nm: &str) -> bool

Returns true if an option was defined

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pub fn opt_present(&self, nm: &str) -> bool

Returns true if an option was matched.

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pub fn opt_count(&self, nm: &str) -> usize

Returns the number of times an option was matched.

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pub fn opt_positions(&self, nm: &str) -> Vec<usize>

Returns a vector of all the positions in which an option was matched.

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pub fn opts_present(&self, names: &[String]) -> bool

Returns true if any of several options were matched.

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pub fn opts_str(&self, names: &[String]) -> Option<String>

Returns the string argument supplied to one of several matching options or None.

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pub fn opt_strs(&self, nm: &str) -> Vec<String>

Returns a vector of the arguments provided to all matches of the given option.

Used when an option accepts multiple values.

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pub fn opt_strs_pos(&self, nm: &str) -> Vec<(usize, String)>

Returns a vector of the arguments provided to all matches of the given option, together with their positions.

Used when an option accepts multiple values.

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pub fn opt_str(&self, nm: &str) -> Option<String>

Returns the string argument supplied to a matching option or None.

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pub fn opt_default(&self, nm: &str, def: &str) -> Option<String>

Returns the matching string, a default, or None.

Returns None if the option was not present, def if the option was present but no argument was provided, and the argument if the option was present and an argument was provided.

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pub fn opt_get<T>(&self, nm: &str) -> Result<Option<T>, T::Err>
where T: FromStr,

Returns some matching value or None.

Similar to opt_str, also converts matching argument using FromStr.

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pub fn opt_get_default<T>(&self, nm: &str, def: T) -> Result<T, T::Err>
where T: FromStr,

Returns a matching value or default.

Similar to opt_default, except the two differences. Instead of returning None when argument was not present, return def. Instead of returning &str return type T, parsed using str::parse().

Trait Implementations§

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impl Clone for Matches

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fn clone(&self) -> Matches

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Matches

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for Matches

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fn eq(&self, other: &Matches) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for Matches

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impl StructuralPartialEq for Matches

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.