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iseltype

iseltype(A,T)

Tests whether A or its elements are of type T.

Examples

1. Check if an array is of a specific type:

   julia> arr = [1, 2, 3];
   julia> iseltype(arr, Array{Int64,1})
   true

   This example checks if the array arr is of type Array{Int64,1}.

2. Check if an element is of a specific type:

   julia> element = 3.14;
   julia> iseltype(element, Float64)
   true

   It checks if the variable element is of type Float64.

3. Check if elements of a matrix are of a specific type:

   julia> matrix = [1 2; 3 4];
   julia> iseltype(matrix, Int)
   true

   It verifies if all elements of the matrix are of type Int.

Common mistake example:

julia> arr = [1, 2, 3];
julia> iseltype(arr, Array{Float64,1})
false

In this example, the expected type provided to iseltype is incorrect. The array arr is of type Array{Int64,1}, not Array{Float64,1}. Ensure that the expected type matches the actual type of the object or elements when using iseltype.

See Also

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