using views for slices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 34.16复制数据不总是坏的 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334 34.17避免 I/0 中的字符串插值 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469 42 集合和数据结构 471 42.1 迭代 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 具象数值类型 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 582 45.2 数据格式 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 584 45

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.9) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 9) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.9) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.9) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.9) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 9) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.9) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.9) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.9) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 9) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.9) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.9) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been

hello("friend") "Hello, friend" We can also specify multiple packages at once to install: (@v1.8) pkg> add JSON StaticArrays The status command (or the shorter st command) can be used to see installed packages 8) pkg> st Status `~/.julia/environments/v1.6/Project.toml` [7876af07] Example v0.5.3 [682c06a0] JSON v0.21.3 [90137ffa] StaticArrays v1.5.9 Note Some Pkg REPL commands have a short and a long version the command, for example status and st. To remove packages, use rm (or remove): (@v1.8) pkg> rm JSON StaticArrays Use up (or update) to update the installed packages (@v1.8) pkg> up If you have been