. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 18.4 语法指南 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 $ 与 Revise-based workflows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346 37 代码风格指南 349 37.1 写函数，而不是仅仅写脚本 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349 37 JuliaZH.jl，旨在方便 Julia 的中 文用户。我们目前使用 Transifex 作为翻译平台。翻译工作正在进行，有任何疑问或建议 请到社区论坛文档区反馈。若有意参与翻译工作，请参考翻译指南。 Chapter 1 鸣谢 7 Chapter 2 简介 科学计算对性能一直有着最高的需求，但目前各领域的专家却大量使用较慢的动态语言来开展他们 的日常工作。偏爱动态语言有很多很好的理

by package actions which change the manifest. See Pkg.precompile. JULIA_PKG_SERVER Specifies the URL of the package registry to use. By default, Pkg uses https://pkg.julialang.org to fetch Julia packages ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – instead. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified

by package actions which change the manifest. See Pkg.precompile. JULIA_PKG_SERVER Specifies the URL of the package registry to use. By default, Pkg uses https://pkg.julialang.org to fetch Julia packages ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – instead. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified

by package actions which change the manifest. See Pkg.precompile. JULIA_PKG_SERVER Specifies the URL of the package registry to use. By default, Pkg uses https://pkg.julialang.org to fetch Julia packages ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – instead. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString

ExponentialBackOff(n=3, first_delay=5, max_delay=1000)) retry(http_get, check=(s,e)->e.status == "503")(url) retry(read, check=(s,e)->isa(e, IOError))(io, 128; all=false) source Base.ExponentialBackOff – dst. source Base.download – Function. download(url::AbstractString, [path::AbstractString = tempname()]) -> path Download a file from the given url, saving it to the location path, or if not specified download(url, [ output = tempfile() ]; [ method = "GET", ] [ headers = , ] [ timeout = , ] [ progress = , ] [ verbose = false, ] [ downloader = , ] ) -> output url :: AbstractString