原始字符串字面量 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 9 函数 67 9.1 参数传递行为 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 9.2 return 多返回值 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 9.9 参数解构 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 9.10 . . . . . . . . . . . . . . . . . 73 9.11 可选参数 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 9.12 关键字参数 . . . . . . . . . . . . . . . . . . . . . . .

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download to complete in seconds, with

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download to complete in seconds, with

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download to complete in seconds, with

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download in seconds, with a resolution

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") Main binary filename not available. Serving web UI on http://localhost:62261 "alloc-profile.pb.gz" Then you can view the profile by navigating to http://localhost:62261, and the profile is saved to disk delays=rand(5:10, 2)) retry(f, delays=Base.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)

com", "github.com", "julialang.org") @async begin conn = connect(hostname, 80) write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") Main binary filename not available. Serving web UI on http://localhost:62261 "alloc-profile.pb.gz" Then you can view the profile by navigating to http://localhost:62261, and the profile is saved to disk delays=rand(5:10, 2)) retry(f, delays=Base.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)

@async begin conn = connect(hostname, 80) CHAPTER 21. NETWORKING AND STREAMS 288 write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download in seconds, with a resolution

@async begin conn = connect(hostname, 80) CHAPTER 21. NETWORKING AND STREAMS 288 write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download in seconds, with a resolution

@async begin conn = connect(hostname, 80) CHAPTER 21. NETWORKING AND STREAMS 288 write(conn, "GET / HTTP/1.1\r\nHost:$(hostname)\r\n\r\n") readline(conn, keep=true) println("Finished connection to $(hostname)") delays=rand(5:10, 2)) retry(f, delays=Base.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) These pairs are passed as headers when downloading URLs with protocols that supports them, such as HTTP/S. The timeout keyword argument specifies a timeout for the download in seconds, with a resolution