MovingWindow raises a BoundsError

[femtotrader]

julia> using OnlineStats

julia> mw = MovingWindow(Int, 3)
MovingWindow: n=0 | value=Error showing value of type MovingWindow{Int64}:
ERROR: BoundsError: attempt to access 0-element Vector{Int64} at index [[1, 2, 3]]
Stacktrace:
  [1] throw_boundserror(A::Vector{Int64}, I::Tuple{Vector{Int64}})
    @ Base .\abstractarray.jl:744
  [2] checkbounds
    @ .\abstractarray.jl:709 [inlined]
  [3] _getindex
    @ .\multidimensional.jl:860 [inlined]
  [4] getindex
    @ .\abstractarray.jl:1294 [inlined]
  [5] permute!(v::Vector{Int64}, p::Vector{Int64})
    @ Base .\combinatorics.jl:187
  [6] value(o::MovingWindow{Int64})
    @ OnlineStats C:\Users\femto\.julia\packages\OnlineStats\U6Stp\src\stats\stats.jl:386
  [7] show(io::IOContext{Base.TTY}, o::MovingWindow{Int64})
    @ OnlineStatsBase C:\Users\femto\.julia\packages\OnlineStatsBase\q7tWg\src\OnlineStatsBase.jl:79
  [8] show(io::IOContext{Base.TTY}, #unused#::MIME{Symbol("text/plain")}, x::MovingWindow{Int64})
    @ Base.Multimedia .\multimedia.jl:47
  [9] (::REPL.var"#55#56"{REPL.REPLDisplay{REPL.LineEditREPL}, MIME{Symbol("text/plain")}, Base.RefValue{Any}})(io::Any)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:276
 [10] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:557
 [11] display(d::REPL.REPLDisplay, mime::MIME{Symbol("text/plain")}, x::Any)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:262
 [12] display
    @ C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:281 [inlined]
 [13] display(x::Any)
    @ Base.Multimedia .\multimedia.jl:340
 [14] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [15] invokelatest
    @ .\essentials.jl:813 [inlined]
 [16] print_response(errio::IO, response::Any, show_value::Bool, have_color::Bool, specialdisplay::Union{Nothing, AbstractDisplay})
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:305
 [17] (::REPL.var"#57#58"{REPL.LineEditREPL, Pair{Any, Bool}, Bool, Bool})(io::Any)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:287
 [18] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:557
 [19] print_response(repl::REPL.AbstractREPL, response::Any, show_value::Bool, have_color::Bool)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:285
 [20] (::REPL.var"#do_respond#80"{Bool, Bool, REPL.var"#93#103"{REPL.LineEditREPL, REPL.REPLHistoryProvider}, REPL.LineEditREPL, REPL.LineEdit.Prompt})(s::REPL.LineEdit.MIState, buf::Any, ok::Bool)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:899
 [21] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [22] invokelatest
    @ .\essentials.jl:813 [inlined]
 [23] run_interface(terminal::REPL.Terminals.TextTerminal, m::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
    @ REPL.LineEdit C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\LineEdit.jl:2647
 [24] run_frontend(repl::REPL.LineEditREPL, backend::REPL.REPLBackendRef)
    @ REPL C:\Users\femto\.julia\juliaup\julia-1.9.1+0.x64.w64.mingw32\share\julia\stdlib\v1.9\REPL\src\REPL.jl:1300
 [25] (::REPL.var"#62#68"{REPL.LineEditREPL, REPL.REPLBackendRef})()
    @ REPL .\task.jl:514

[joshday]

Ah, the error is in the show method if the buffer isn't full (in this case, it hasn't been fit! with 3 observations yet). Fixed on master. Release out soon.

[femtotrader]

Thanks for prompt answer !