Internals

LinearCombinations.Hashed{T}

Hashed{T}(x::T) is a wrapper that stores hash(x) along with x. Computing the hash of such an element returns the stored hash value.

See also LinearCombinations.unhash.

LinearCombinations.unhash(x)

Return the argument unless it is of the form Hashed{T}(y), in which case y is returned.

See also LinearCombinations.Hashed.

LinearCombinations.unval(x)

Return c if the argument x is of type Val{c} and x itself otherwise.

This can be used to write type-stable code for the coefftype keyword argument to linear and multilinear functions.

See also @linear, @linear_kw, @multilinear.

Examples

julia> LinearCombinations.unval(Char)
Char

julia> LinearCombinations.unval(Val(Char))
Char

Zero

Zero is a type whose only value Zero() behaves like 0, but allows for simplification at compile time.

LinearCombinations.LinearStyle

The broadcasting style used for linear combinations.

See also @linear_broadcastable.

LinearCombinations.show_summand(io::IO, x, c)

This function is called for each term-coefficient pair x => c of a linear combination that is displayed. By defining additional methods for this function, the output that it printed for certain term or coefficient types can be customized.

LinearCombinations.AddToMul{T, R, L <: AbstractLinear{T,R}, S} <: AbstractLinear{T,R}

AddToMul(a::AbstractLinear, c)

This subtype of AbstractLinear only implements methods for length, sizehint!, modifycoeff! and modifylinear!. Hence one can use it as the first argument to addmul!, add!, sub!, += and -=. Adding b to AddToMul(a, c) effectively adds c*b to a.