的哲学是 no boilerplate： Julia 可以直接调用 C/Fortran 的函数，不需要任何” 胶水” 代码，代码生成或其它编译过程–即使在交 互式会话 (REPL/Jupyter notebook) 中使用也一样. 在 Julia 中，上述特性可以仅仅通过调用 ccall 实现， 它的语法看起来就像是普通的函数调用。 The code to be called must be available \:bookmark_tabs: Bookmark Tabs U+1F4D2 � \:ledger: Ledger U+1F4D3 � \:notebook: Notebook U+1F4D4 � \:notebook_with_decorative_cover: Notebook With Decorative Cover U+1F4D5 � \:closed_book: Closed Book U+1F4D6 pushdisplay 将其压进显示后端的栈中。 基础 Julia 运行环境只提供纯文本显示，但是更富的显示可以通过加载外部模块或者使用图形化 Julia 环境（比如基于 IPython 的 IJulia notebook）来实现。 Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_decora- tive_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display

\:bookmark_tabs: Bookmark Tabs U+1F4D2 \:ledger: Ledger U+1F4D3 \:notebook: Notebook U+1F4D4 \:notebook_with_deco- rative_cover: Notebook With Decorative Cover U+1F4D5 \:closed_book: Closed Book U+1F4D6 julia> normpath("/home/myuser/../example.jl") "/home/example.jl" julia> normpath("Documents/Julia") == joinpath("Documents", "Julia") true source normpath(path::AbstractString, paths::AbstractString. loading external modules or by using graphical Julia environments (such as the IPython-based IJulia notebook). Base.Multimedia.AbstractDisplay – Type. AbstractDisplay Abstract supertype for rich display