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ProtectedArrays

Documentation for ProtectedArrays.

julia> using ProtectedArrays

julia> a = zeros(2, 5)
2×5 Matrix{Float64}:
 0.0  0.0  0.0  0.0  0.0
 0.0  0.0  0.0  0.0  0.0

julia> pa = protect(a)
2×5 ProtectedMatrix(::Matrix{Float64}) with eltype Float64:
 0.0  0.0  0.0  0.0  0.0
 0.0  0.0  0.0  0.0  0.0

julia> pa[1] = 1.
ERROR: `ProtectedArray` does not allow modifying elements with `setindex!`,
       use `unprotect` if you really know what you're doing.
[...]

julia> pa[1, 1] = 1.
ERROR: `ProtectedArray` does not allow modifying elements with `setindex!`,
       use `unprotect` if you really know what you're doing.
[...]

julia> pa[:, 1] .= 1.
ERROR: `ProtectedArray` does not allow modifying elements with `setindex!`,
       use `unprotect` if you really know what you're doing.
[...]

julia> fill!(pa, 1.)
ERROR: `ProtectedArray` does not allow modifying elements with `setindex!`,
       use `unprotect` if you really know what you're doing.
[...]

julia> a # unmodified
2×5 Matrix{Float64}:
 0.0  0.0  0.0  0.0  0.0
 0.0  0.0  0.0  0.0  0.0

API

Base.similar — Method
similar(pa::ProtectedArray, eltype=eltype(pa), dims=size(pa))

Create an uninitialized mutable array based on the underlying array parent(pa) wrapped by ProtectedArray.

source