Struct MergeVarBuilder 

pub struct MergeVarBuilder<I: VarValue> { /* private fields */ }

Build a merge_var! from any number of input vars of the same type I.

Implementations

impl<I: VarValue> MergeVarBuilder<I>

pub fn new() -> Self

New empty.

pub fn with_capacity(capacity: usize) -> Self

New with pre-allocated inputs.

pub fn push(&mut self, input: impl MergeInput<I>)

Push an input.

pub fn build<O: VarValue>( self, merge: impl FnMut(MergeVarInputs<'_, I>) -> O + Send + 'static, ) -> Var<O>

Build a red-only merge var.

pub fn build_bidi<O: VarValue>( self, merge: impl FnMut(MergeVarInputs<'_, I>) -> O + Send + 'static, map_back: impl FnMut(&O, usize) -> I + Send + 'static, ) -> Var<O>

Build a read-write merge var.

pub fn build_bidi_modify<O: VarValue>( self, merge: impl FnMut(MergeVarInputs<'_, I>) -> O + Send + 'static, modify_back: impl FnMut(&O, usize, VarModify<'_, '_, I>) + Send + 'static, ) -> Var<O>

Build a read-write merge var that modifies each input back.

impl<T: VarValue + AsRef<str>> MergeVarBuilder<T>

pub fn join_txt(self, separator: impl Into<Txt>) -> Var<Txt>

Build to a var that joins texts placing a separator between each.

Trait Implementations

impl<I: Clone + VarValue> Clone for MergeVarBuilder<I>

fn clone(&self) -> MergeVarBuilder<I>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: VarValue> Default for MergeVarBuilder<I>

fn default() -> Self

Returns the “default value” for a type.