Hi,
I’m working my way through exercism, and looking at community solutions I’m seeing all these very specific functions that I’m coding myself, eg findall
Where should I look to see all the functions julia is providing?
Thanks
Jonathan.
Just read the documentation, for example: https://raw.githubusercontent.com/JuliaLang/docs.julialang.org/assets/julia-1.7.1.pdf
The docs are available in html Julia Documentation · The Julia Language.
findall is in Base: Arrays · The Julia Language
2 Likes
One thing I like to do from the REPL is using apropos which can also be accessed by putting quotation marks around a query in help mode. For example, if I was trying to find a function that looks for matches through a collection (findall) I might look at all the functions whose docstring contains the word “search”.
help?> apropos
search: apropos hasproperty
apropos([io::IO=stdout], pattern::Union{AbstractString,Regex})
Search available docstrings for entries containing pattern.
When pattern is a string, case is ignored. Results are printed to io.
help?> "search"
Base.reverse
Base.include
Base.match
Base.MainInclude.include
Base.LOAD_PATH
Base.replace
Base.findall
Base.require
Base.eachmatch
Base.findfirst
Base.Sys.which
Base.DL_LOAD_PATH
Base.Libc.Libdl.find_library
Base.Libc.Libdl.dlopen
Base.BinaryPlatforms.detect_libstdcxx_version
Base.Sort.searchsortedfirst
Base.Sort.searchsorted
Base.Sort.searchsortedlast
Base.Docs.getdoc
Artifacts.@artifact_str
Artifacts.with_artifacts_directory
NetworkOptions.ca_roots
NetworkOptions.ssh_known_hosts_files
LinearAlgebra.eigvals!
LinearAlgebra.eigen
LinearAlgebra.LAPACK.gels!
Tar.create
InteractiveUtils.methodswith
LibGit2.GitDescribeResult
LibGit2.CheckoutOptions
LibGit2.isbinary
LibGit2.Consts.GIT_CONFIG
LibGit2.Consts.GIT_REPOSITORY_OPEN
REPL.stripmd
Base.Docs.apropos
7 Likes
methodswith can be very useful if you have an object and want to know what methods you can call on it. For example, for a Date:
julia> using Dates
julia> day = today()
2022-01-05
julia> typeof(day)
Date
julia> methodswith(typeof(day); supertypes=true)
[1] datetime2rata(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/conversions.jl:99
[2] day(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/accessors.jl:59
[3] dayabbr(dt::TimeType; locale) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:189
[4] dayname(dt::TimeType; locale) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:169
[5] dayofmonth(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/accessors.jl:71
[6] dayofquarter(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:662
[7] dayofweek(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:121
[8] dayofweekofmonth(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:222
[9] dayofyear(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:643
[10] daysinmonth(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:619
[11] daysinyear(dt::TimeType) in Dates at /nix/store/h53x3whi685kck84889h2cbaagjbmay8-julia-bin-1.6.5/share/julia/stdlib/v1.6/Dates/src/query.jl:645
[...]
1 Like
