ValueType

Enum ValueType 

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pub enum ValueType {
    AttrSet,
    Bool,
    External,
    Float,
    Function,
    Int,
    List,
    Null,
    Path,
    String,
    Unknown,
}
Expand description

The type discriminator of a Value that has successfully evaluated to at least weak head normal form.

Typically acquired with EvalState::value_type

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AttrSet

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Bool

A Nix boolean

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External

A Nix external value (mostly-opaque value for plugins, linked applications)

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Float

A Nix float

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Function

A Nix function

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Int

A Nix integer

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List

A Nix list

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Null

A Nix null

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Path

A Nix path value

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String

A Nix string

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Unknown

An unknown value, presumably from a new, partially unsupported version of Nix

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impl Debug for ValueType

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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 ValueType

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fn eq(&self, other: &ValueType) -> 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 ValueType

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impl StructuralPartialEq for ValueType

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> 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.