如何在 Julia 1.6.0 中使用 NamedTuples 初始化数组?
How to initialize an array with NamedTuples in Julia 1.6.0?
我可以用 Array{Tuple{Int, Int}}(undef, 10)
.
初始化一个元组数组
但是,我无法让它对命名元组起作用。有谁知道我该怎么做?
提前致谢!
这是实现它的方法(我知道你想要一个具有具体类型的 NamedTuples
的未初始化数组):
julia> Array{NamedTuple{(:a, :b), Tuple{Int64, Float64}}}(undef, 10)
10-element Vector{NamedTuple{(:a, :b), Tuple{Int64, Float64}}}:
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 2.156699073e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 2.15670018e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
julia> Array{NamedTuple{(:a, :b), Tuple{Int64, String}}}(undef, 10)
10-element Vector{NamedTuple{(:a, :b), Tuple{Int64, String}}}:
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef
我可以用 Array{Tuple{Int, Int}}(undef, 10)
.
但是,我无法让它对命名元组起作用。有谁知道我该怎么做?
提前致谢!
这是实现它的方法(我知道你想要一个具有具体类型的 NamedTuples
的未初始化数组):
julia> Array{NamedTuple{(:a, :b), Tuple{Int64, Float64}}}(undef, 10)
10-element Vector{NamedTuple{(:a, :b), Tuple{Int64, Float64}}}:
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 2.156699073e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 2.15670018e-315)
(a = 257472272, b = 1.272082044e-315)
(a = 257472272, b = 1.272082044e-315)
julia> Array{NamedTuple{(:a, :b), Tuple{Int64, String}}}(undef, 10)
10-element Vector{NamedTuple{(:a, :b), Tuple{Int64, String}}}:
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef
#undef