Value

Struct Value 

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pub struct Value<'a> { /* private fields */ }
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A Nix value.

This represents any value in the Nix language, including primitives, collections, and functions.

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impl Value<'_>

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pub fn force(&mut self) -> Result<()>

Force evaluation of this value.

If the value is a thunk, this will evaluate it to its final form.

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Returns an error if evaluation fails.

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pub fn force_deep(&mut self) -> Result<()>

Force deep evaluation of this value.

This forces evaluation of the value and all its nested components.

§Errors

Returns an error if evaluation fails.

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pub fn value_type(&self) -> ValueType

Get the type of this value.

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pub fn as_int(&self) -> Result<i64>

Convert this value to an integer.

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Returns an error if the value is not an integer.

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pub fn as_float(&self) -> Result<f64>

Convert this value to a float.

§Errors

Returns an error if the value is not a float.

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pub fn as_bool(&self) -> Result<bool>

Convert this value to a boolean.

§Errors

Returns an error if the value is not a boolean.

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pub fn as_string(&self) -> Result<String>

Convert this value to a string.

§Errors

Returns an error if the value is not a string.

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pub fn to_nix_string(&self) -> Result<String>

Format this value as Nix syntax.

This provides a string representation that matches Nix’s own syntax, making it useful for debugging and displaying values to users.

§Errors

Returns an error if the value cannot be converted to a string representation.

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impl Debug for Value<'_>

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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 Display for Value<'_>

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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 Drop for Value<'_>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'a> Freeze for Value<'a>

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impl<'a> RefUnwindSafe for Value<'a>

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impl<'a> !Send for Value<'a>

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impl<'a> !Sync for Value<'a>

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impl<'a> Unpin for Value<'a>

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impl<'a> UnwindSafe for Value<'a>

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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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. 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.