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GroupDeclaration

miniextendr_api::dataframe::group

Struct GroupDeclaration 

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pub struct GroupDeclaration {
    pub vars: Vec<String>,
    pub drop: bool,
}
Expand description

How a dplyr-grouped frame declares its grouping, returned by DataFrame::group_declaration: the grouping variables and the .drop policy, without the cached group rows.

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§vars: Vec<String>

The grouping variable names, in declaration order — dplyr’s group_vars(), setdiff(names(groups), ".rows"): the groups frame’s column names other than .rows, each once. Empty for a rowwise_df without id columns.

§drop: bool

Whether grouping drops empty groups — dplyr’s group_by_drop_default(). For a grouped_df, true unless the groups frame’s .drop attribute is exactly FALSE (identical(attr(groups, ".drop"), FALSE): a length-1 logical FALSE with no attributes). Always true for a frame that is a rowwise_df but not a grouped_df, whose group_by_drop_default() is the default method’s TRUE.

Trait Implementations§

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impl Clone for GroupDeclaration

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

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

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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 Eq for GroupDeclaration

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#[doc(hidden)]
fn assert_fields_are_eq(&self)

🔬This is a nightly-only experimental API. (derive_eq_internals)
1.0.0 (const: unstable) · Source§

#[doc(hidden)]
fn assert_receiver_is_total_eq(&self)

👎Deprecated since 1.95.0:

implementation detail of #[derive(Eq)]

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impl PartialEq for GroupDeclaration

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for GroupDeclaration

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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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> ConsumingFallible for T
where T: Clone,

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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> RClone for T
where T: Clone,

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fn r_clone(&self) -> T

Create a deep copy of this value.
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#[doc(hidden)]
unsafe extern "C" fn __RClone_r_clone_shim( data: *mut c_void, argc: i32, argv: *const SEXP, ) -> SEXP
where Self: Sized + RClone + IntoR,

Method shim for RClone::r_clone. Read more
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impl<T> RDebug for T
where T: Debug,

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fn debug_str(&self) -> String

Get a compact debug string representation.
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fn debug_str_pretty(&self) -> String

Get a pretty-printed debug string with indentation.
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#[doc(hidden)]
unsafe extern "C" fn __RDebug_debug_str_shim( data: *mut c_void, argc: i32, argv: *const SEXP, ) -> SEXP
where Self: Sized + RDebug,

Method shim for RDebug::debug_str. Read more
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#[doc(hidden)]
unsafe extern "C" fn __RDebug_debug_str_pretty_shim( data: *mut c_void, argc: i32, argv: *const SEXP, ) -> SEXP
where Self: Sized + RDebug,

Method shim for RDebug::debug_str_pretty. Read more
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impl<T> SizeHint for T
where T: ?Sized,

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default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)
Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more
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default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)
Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more
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final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)
Returns an estimate for the number of elements this container like type contains. Read more
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impl<T> SizedTypeProperties for T

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#[doc(hidden)]
const SIZE: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const ALIGN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const ALIGNMENT: Alignment = _

🔬This is a nightly-only experimental API. (ptr_alignment_type)
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#[doc(hidden)]
const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)
true if this type requires no storage. false if its size is greater than zero. Read more
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#[doc(hidden)]
const LAYOUT: Layout = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const MAX_SLICE_LEN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
The largest safe length for a [Self]. Read more
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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 = !

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

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.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes