GrabFirst

macro_clap::opt_types

Struct GrabFirst 

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pub struct GrabFirst<T> {
    pub first: Option<T>,
}
Expand description

The first value given to the option

GrabFirst will return the value of the first occurence of the option

If the option is not mentionned, its field first will be None

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§first: Option<T>

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impl<T: Debug> Debug for GrabFirst<T>

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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<T> OptionReceptacle for GrabFirst<T>
where T: FromStr,

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fn receptacle_default() -> Self

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fn receive_value(&mut self, value: Option<String>) -> Result<(), String>

Auto Trait Implementations§

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impl<T> Freeze for GrabFirst<T>
where T: Freeze,

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impl<T> RefUnwindSafe for GrabFirst<T>
where T: RefUnwindSafe,

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impl<T> Send for GrabFirst<T>
where T: Send,

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impl<T> Sync for GrabFirst<T>
where T: Sync,

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impl<T> Unpin for GrabFirst<T>
where T: Unpin,

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impl<T> UnwindSafe for GrabFirst<T>
where T: UnwindSafe,

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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> 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, 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.