help?> round
search: round rounding count rand run RoundUp count!

  round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]])
  round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; digits=0, base=10)
  round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; sigdigits, base=10)

  Return the nearest integral value of the same type as the complex-valued z
  to z, breaking ties using the specified RoundingModes. The first
  RoundingMode is used for rounding the real components while the second is
  used for rounding the imaginary components.

  RoundingModeReal and RoundingModeImaginary default to RoundNearest, which
  rounds to the nearest integer, with ties (fractional values of 0.5) being
  rounded to the nearest even integer.

  Examples
  ≡≡≡≡≡≡≡≡

  julia> round(3.14 + 4.5im)
  3.0 + 4.0im

  julia> round(3.14 + 4.5im, RoundUp, RoundNearestTiesUp)
  4.0 + 5.0im

  julia> round(3.14159 + 4.512im; digits = 1)
  3.1 + 4.5im

  julia> round(3.14159 + 4.512im; sigdigits = 3)
  3.14 + 4.51im

  ────────────────────────────────────────────────────────────────────────────

Error showing value of type Markdown.MD:
ERROR: MethodError: no method matching keys(::Nothing)
The function `keys` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  keys(::Cmd)
   @ Base process.jl:716
  keys(::Core.SimpleVector)
   @ Base essentials.jl:945
  keys(::Base.TermInfo)
   @ Base terminfo.jl:232
  ...

Stacktrace:
  [1] pairs(collection::Nothing)
    @ Base ./abstractdict.jl:178
  [2] findfirst(testf::JuliaSyntaxHighlighting.var"#17#18", A::Nothing)
    @ Base ./array.jl:2433
  [3] _hl_annotations!(highlights::Vector{…}, lineage::JuliaSyntaxHighlighting.GreenLineage, ctx::JuliaSyntaxHighlighting.HighlightContext{…}; syntax_errors::Bool)
    @ JuliaSyntaxHighlighting ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:222
  [4] _hl_annotations!
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:181 [inlined]
  [5] _hl_annotations!(highlights::Vector{…}, lineage::JuliaSyntaxHighlighting.GreenLineage, ctx::JuliaSyntaxHighlighting.HighlightContext{…}; syntax_errors::Bool)
    @ JuliaSyntaxHighlighting ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:343
  [6] _hl_annotations!
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:181 [inlined]
  [7] _hl_annotations!(highlights::Vector{…}, lineage::JuliaSyntaxHighlighting.GreenLineage, ctx::JuliaSyntaxHighlighting.HighlightContext{…}; syntax_errors::Bool)
    @ JuliaSyntaxHighlighting ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:343
  [8] _hl_annotations!
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:181 [inlined]
  [9] _hl_annotations!(highlights::Vector{…}, lineage::JuliaSyntaxHighlighting.GreenLineage, ctx::JuliaSyntaxHighlighting.HighlightContext{…}; syntax_errors::Bool)
    @ JuliaSyntaxHighlighting ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:343
 [10] _hl_annotations!
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:181 [inlined]
 [11] #_hl_annotations#10
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:170 [inlined]
 [12] _hl_annotations
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:167 [inlined]
 [13] highlight
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:392 [inlined]
 [14] highlight
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/JuliaSyntaxHighlighting/src/JuliaSyntaxHighlighting.jl:383 [inlined]
 [15] term(io::IOContext{REPL.LimitIO{Base.TTY}}, md::Markdown.Code, columns::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:120
 [16] term(io::IOContext{REPL.LimitIO{Base.TTY}}, content::Vector{Any}, cols::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:10
 [17] term(io::IOContext{REPL.LimitIO{Base.TTY}}, md::Markdown.MD, columns::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:18
 [18] term(io::IOContext{REPL.LimitIO{Base.TTY}}, content::Vector{Any}, cols::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:13
 [19] term(io::IOContext{REPL.LimitIO{Base.TTY}}, md::Markdown.MD, columns::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:18
 [20] term(io::IOContext{REPL.LimitIO{Base.TTY}}, content::Vector{Any}, cols::Int64)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:13
 [21] term
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:18 [inlined]
 [22] term
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:17 [inlined]
 [23] show(io::IOContext{REPL.LimitIO{Base.TTY}}, ::MIME{Symbol("text/plain")}, md::Markdown.MD)
    @ Markdown ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/Markdown/src/render/terminal/render.jl:231
 [24] show_repl(io::IO, mime::MIME{Symbol("text/plain")}, x::Any)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:574
 [25] show_limited(io::IO, mime::MIME, x::Any)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:543
 [26] (::REPL.var"#display##0#display##1"{REPL.REPLDisplay{…}, MIME{…}, Base.RefValue{…}})(io::Any)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:566
 [27] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:867
 [28] display(d::REPL.REPLDisplay, mime::MIME{Symbol("text/plain")}, x::Any)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:552
 [29] display
    @ ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:572 [inlined]
 [30] display(x::Any)
    @ Base.Multimedia ./multimedia.jl:340
 [31] #invokelatest#1
    @ ./essentials.jl:1057 [inlined]
 [32] invokelatest
    @ ./essentials.jl:1053 [inlined]
 [33] print_response(errio::IO, response::Any, show_value::Bool, have_color::Bool, specialdisplay::Union{…})
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:0
 [34] (::REPL.var"#print_response##0#print_response##1"{REPL.LineEditREPL, Pair{Any, Bool}, Bool, Bool})(io::Any)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:584
 [35] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:867
 [36] print_response(repl::REPL.AbstractREPL, response::Any, show_value::Bool, have_color::Bool)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:582
 [37] (::REPL.var"#do_respond#71"{…})(s::REPL.LineEdit.MIState, buf::Any, ok::Bool)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:1209
 [38] #invokelatest#1
    @ ./essentials.jl:1057 [inlined]
 [39] invokelatest
    @ ./essentials.jl:1053 [inlined]
 [40] run_interface(terminal::REPL.Terminals.TextTerminal, m::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
    @ REPL.LineEdit ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/LineEdit.jl:2852
 [41] run_frontend(repl::REPL.LineEditREPL, backend::REPL.REPLBackendRef)
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:1680
 [42] (::REPL.var"#59#60"{REPL.LineEditREPL, REPL.REPLBackendRef})()
    @ REPL ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.13/REPL/src/REPL.jl:686
Some type information was truncated. Use `show(err)` to see complete types.

julia> versioninfo()
Julia Version 1.13.0-DEV.52
Commit 6b39a818bdc (2025-02-13 17:11 UTC)
Build Info:
  Official https://julialang.org release
Platform Info:
  OS: macOS (arm64-apple-darwin24.0.0)
  CPU: 8 × Apple M1 Pro
  WORD_SIZE: 64
  LLVM: libLLVM-18.1.7 (ORCJIT, apple-m1)
  GC: Built with stock GC
Threads: 1 default, 1 interactive, 1 GC (on 6 virtual cores)