Deprecate randbool (#9105)

For a random Bool, instead of randbool(), use rand(Bool)
Instead of randbool([rng], dims), use bitrand([rng], dims)
Add randbool deprecation to NEWS

NEWS.md

@@ -159,12 +159,14 @@ Deprecated or removed
   `trunc{T<:Integer}(T,x)`, `floor{T<:Integer}(T,x)`, etc.. `trunc` is now
   always bound-checked;`Base.unsafe_trunc` provides the old unchecked `itrunc`
   behaviour ([#9133]).
- 
+
   * `squeeze` now requires that passed dimension(s) are an `Int` or tuple of `Int`s;
     calling `squeeze` with an arbitrary iterator is deprecated ([#9271]).
     Additionally, passed dimensions must be unique and correspond to extant
     dimensions of the input array.
-
+
+  * `randbool` is deprecated. Use `rand(Bool)` to produce a random boolean value, and
+    `bitrand` to produce a random BitArray ([#9105], [#9569]).
 
 Julia v0.3.0 Release Notes
 ==========================
@@ -1113,6 +1115,7 @@ Too numerous to mention.
 [#8660]: https://github.com/JuliaLang/julia/issues/8660
 [#8712]: https://github.com/JuliaLang/julia/issues/8712
 [#8734]: https://github.com/JuliaLang/julia/issues/8734
+[#8750]: https://github.com/JuliaLang/julia/issues/8750
 [#8776]: https://github.com/JuliaLang/julia/issues/8776
 [#8791]: https://github.com/JuliaLang/julia/issues/8791
 [#8792]: https://github.com/JuliaLang/julia/issues/8792
@@ -1131,6 +1134,7 @@ Too numerous to mention.
 [#9049]: https://github.com/JuliaLang/julia/issues/9049
 [#9065]: https://github.com/JuliaLang/julia/issues/9065
 [#9083]: https://github.com/JuliaLang/julia/issues/9083
+[#9105]: https://github.com/JuliaLang/julia/issues/9105
 [#9122]: https://github.com/JuliaLang/julia/issues/9122
 [#9126]: https://github.com/JuliaLang/julia/issues/9126
 [#9132]: https://github.com/JuliaLang/julia/issues/9132
@@ -1140,3 +1144,4 @@ Too numerous to mention.
 [#9261]: https://github.com/JuliaLang/julia/issues/9261
 [#9271]: https://github.com/JuliaLang/julia/issues/9271
 [#9294]: https://github.com/JuliaLang/julia/issues/9294
+[#9569]: https://github.com/JuliaLang/julia/issues/9569

base/bitarray.jl

@@ -329,16 +329,6 @@ reinterpret{N}(B::BitArray, dims::NTuple{N,Int}) = reshape(B, dims)
 bitunpack{N}(B::BitArray{N}) = convert(Array{Bool,N}, B)
 bitpack{T,N}(A::AbstractArray{T,N}) = convert(BitArray{N}, A)
 
-## Random ##
-
-function bitarray_rand_fill!(rng, B::BitArray) # rng is an AbstractRNG
-    length(B) == 0 && return B
-    Bc = B.chunks
-    rand!(rng, Bc)
-    Bc[end] &= @_msk_end length(B)
-    return B
-end
-
 ## Indexing: getindex ##
 
 function unsafe_bitgetindex(Bc::Vector{UInt64}, i::Int)

base/deprecated.jl

@@ -185,8 +185,6 @@ const IpAddr = IPAddr
 @deprecate isblank(c::Char) c == ' ' || c == '\t'
 @deprecate isblank(s::AbstractString) all(c -> c == ' ' || c == '\t', s)
 
-@deprecate randbool! rand!
-
 export Nothing
 const Nothing = Void
 
@@ -259,3 +257,10 @@ const base64 = base64encode
 
 @deprecate sizehint(A, n) sizehint!(A, n)
 
+@deprecate randbool!                               rand!
+@deprecate randbool()                              rand(Bool)
+@deprecate randbool(r::AbstractRNG)                rand(r, Bool)
+@deprecate randbool(dims::Dims)                    bitrand(dims)
+@deprecate randbool(dims::Int...)                  bitrand(dims)
+@deprecate randbool(r::AbstractRNG, dims::Dims)    bitrand(r, dims)
+@deprecate randbool(r::AbstractRNG, dims::Int...)  bitrand(r, dims)

base/exports.jl

@@ -916,12 +916,12 @@ export
     RandomDevice,
     rand!,
     rand,
-    randbool,
     randn!,
     randn,
     randexp!,
     randexp,
     srand,
+    bitrand,
 
 # bigfloat & precision
     precision,

base/random.jl

@@ -7,7 +7,7 @@ export srand,
        rand, rand!,
        randn, randn!,
        randexp, randexp!,
-       randbool,
+       bitrand,
        AbstractRNG, RNG, MersenneTwister, RandomDevice
 
 
@@ -552,16 +552,19 @@ rand(rng::AbstractRNG, r::AbstractArray, dims::Int...) = rand(rng, r, dims)
 
 ## random BitArrays (AbstractRNG)
 
-rand!(r::AbstractRNG, B::BitArray) = Base.bitarray_rand_fill!(r, B)
-
-randbool(r::AbstractRNG, dims::Dims)   = rand!(r, BitArray(dims))
-randbool(r::AbstractRNG, dims::Int...) = rand!(r, BitArray(dims))
-
-randbool(dims::Dims)   = rand!(BitArray(dims))
-randbool(dims::Int...) = rand!(BitArray(dims))
+function rand!(rng::AbstractRNG, B::BitArray)
+    length(B) == 0 && return B
+    Bc = B.chunks
+    rand!(rng, Bc)
+    Bc[end] &= Base.@_msk_end length(B)
+    return B
+end
 
-randbool(r::AbstractRNG=GLOBAL_RNG) = rand(r, Bool)
+bitrand(r::AbstractRNG, dims::Dims)   = rand!(r, BitArray(dims))
+bitrand(r::AbstractRNG, dims::Int...) = rand!(r, BitArray(dims))
 
+bitrand(dims::Dims)   = rand!(BitArray(dims))
+bitrand(dims::Int...) = rand!(BitArray(dims))
 
 ## randn() - Normally distributed random numbers using Ziggurat algorithm
 

doc/manual/arrays.rst

@@ -65,7 +65,7 @@ Function                                            Description
 =================================================== =====================================================================
 :func:`Array(type, dims...) <Array>`                an uninitialized dense array
 :func:`cell(dims...) <cell>`                        an uninitialized cell array (heterogeneous array)
-:func:`zeros(type, dims...) <zeros>`                an array of all zeros of specified type, defaults to ``Float64`` if 
+:func:`zeros(type, dims...) <zeros>`                an array of all zeros of specified type, defaults to ``Float64`` if
                                                     ``type`` not specified
 :func:`zeros(A) <zeros>`                            an array of all zeros of same element type and shape of ``A``
 :func:`ones(type, dims...) <ones>`                  an array of all ones of specified type, defaults to ``Float64`` if
@@ -191,7 +191,7 @@ and its left and right neighbor along a 1-d grid. :
      0.699456
      0.977653
      0.994953
-     0.41084 
+     0.41084
      0.809411
 
     julia> [ 0.25*x[i-1] + 0.5*x[i] + 0.25*x[i+1] for i=2:length(x)-1 ]
@@ -200,7 +200,7 @@ and its left and right neighbor along a 1-d grid. :
      0.57468
      0.685417
      0.912429
-     0.8446  
+     0.8446
      0.656511
 
 .. note:: In the above example, ``x`` is declared as constant because type
@@ -259,7 +259,7 @@ Example:
      7  11
 
 Empty ranges of the form ``n:n-1`` are sometimes used to indicate the inter-index
-location between ``n-1`` and ``n``.  For example, the :func:`searchsorted` function uses 
+location between ``n-1`` and ``n``.  For example, the :func:`searchsorted` function uses
 this convention to indicate the insertion point of a value not found in a sorted
 array:
 
@@ -564,9 +564,9 @@ beyond the point of insertion have to be moved one place over.
 All operations on sparse matrices are carefully implemented to exploit
 the CSC data structure for performance, and to avoid expensive operations.
 
-If you have data in CSC format from a different application or library, 
+If you have data in CSC format from a different application or library,
 and wish to import it in Julia, make sure that you use 1-based indexing.
-The row indices in every column need to be sorted. If your `SparseMatrixCSC` 
+The row indices in every column need to be sorted. If your `SparseMatrixCSC`
 object contains unsorted row indices, one quick way to sort them is by
 doing a double transpose.
 
@@ -640,7 +640,7 @@ into a sparse matrix using the :func:`sparse` function:
             [4, 4]  =  1.0
             [5, 5]  =  1.0
 
-You can go in the other direction using the :func:`full` function. The 
+You can go in the other direction using the :func:`full` function. The
 :func:`issparse` function can be used to query if a matrix is sparse.
 
 .. doctest::
@@ -705,10 +705,8 @@ reference.
 |                                        |                                  | distribution. (Requires the                |
 |                                        |                                  | ``Distributions`` package.)                |
 +----------------------------------------+----------------------------------+--------------------------------------------+
-| :func:`sprandbool(m,n,d) <sprandbool>` | :func:`randbool(m,n) <randbool>` | Creates a *m*-by-*n* random matrix (of     |
+| :func:`sprandbool(m,n,d) <sprandbool>` | :func:`rand(Bool,m,n) <rand>`    | Creates a *m*-by-*n* random matrix (of     |
 |                                        |                                  | density *d*) with non-zero  ``Bool``       |
 |                                        |                                  | elements with probability *d* (*d* =0.5    |
-|                                        |                                  | for :func:`randbool`.)                     |
+|                                        |                                  | for :func:`rand(Bool) <rand>`.)            |
 +----------------------------------------+----------------------------------+--------------------------------------------+
-
-

doc/manual/parallel-computing.rst

@@ -269,7 +269,7 @@ following function in ``count_heads.jl``::
     function count_heads(n)
         c::Int = 0
         for i=1:n
-            c += randbool()
+            c += rand(Bool)
         end
         c
     end
@@ -303,7 +303,7 @@ we can use a *parallel for loop*, which can be written in Julia like
 this::
 
     nheads = @parallel (+) for i=1:200000000
-      int(randbool())
+      int(rand(Bool))
     end
 
 This construct implements the pattern of assigning iterations to

doc/manual/performance-tips.rst

@@ -289,7 +289,7 @@ For example, the following contrived function returns an array of a
 randomly-chosen type::
 
     function strange_twos(n)
-        a = Array(randbool() ? Int64 : Float64, n)
+        a = Array(rand(Bool) ? Int64 : Float64, n)
         for i = 1:n
             a[i] = 2
         end
@@ -305,7 +305,7 @@ This should be written as::
     end
 
     function strange_twos(n)
-        a = Array(randbool() ? Int64 : Float64, n)
+        a = Array(rand(Bool) ? Int64 : Float64, n)
         fill_twos!(a)
         return a
     end

doc/stdlib/numbers.rst

@@ -535,9 +535,9 @@ As ``BigInt`` represents unbounded integers, the interval must be specified (e.g
 
    Populate the array A with random values. If the indexable collection ``coll`` is specified, the values are picked randomly from ``coll``. This is equivalent to ``copy!(A, rand(rng, coll, size(A)))`` or ``copy!(A, rand(rng, eltype(A), size(A)))`` but without allocating a new array.
 
-.. function:: randbool([rng], [dims...])
+.. function:: bitrand([rng], [dims...])
 
-   Generate a random boolean value. Optionally, generate a ``BitArray`` of random boolean values.
+   Generate a ``BitArray`` of random boolean values.
 
 .. function:: randn([rng], [dims...])
 
@@ -554,4 +554,3 @@ As ``BigInt`` represents unbounded integers, the interval must be specified (e.g
 .. function:: randexp!([rng], A::Array{Float64,N})
 
    Fill the array A with random numbers following the exponential distribution (with scale 1).
-