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trues

trues(dims)

Create a BitArray with all values set to true

Examples

1. Create a 1-dimensional BitArray with all true values:

   julia> trues(5)
   5-element BitArray{1}:
   true
   true
   true
   true
   true

   This example creates a 1-dimensional BitArray of length 5 with all elements set to true.

2. Create a 2-dimensional BitArray with all true values:

   julia> trues((2, 3))
   2×3 BitArray{2}:
   true  true  true
   true  true  true

   It creates a 2-dimensional BitArray with 2 rows and 3 columns, where all elements are set to true.

3. Create a 3-dimensional BitArray with all true values:

   julia> trues((2, 2, 2))
   2×2×2 BitArray{3}:
   [:, :, 1] =
   true  true
   true  true
   
   [:, :, 2] =
   true  true
   true  true

   This example creates a 3-dimensional BitArray with size 2x2x2, where all elements are set to true.

Common mistake example:

julia> trues(-2)
ERROR: ArgumentError: dimensions must be non-negative

In this example, a negative dimension is provided, which is not allowed. The dims argument must be a non-negative integer or a tuple of non-negative integers.

See Also

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