# 工作流程建议

## 基于 REPL 的工作流程

### 一个基本的编辑器 / REPL 工作流程

• 把还在开发中的代码放到一个临时的模块中。新建一个文件，例如 Tmp.jl，并放到模块中。

module Tmp
export say_hello

say_hello() = println("Hello!")

end
• 把测试代码放到另一个文件中。新建另一个文件，例如 tst.jl，开头为

include("Tmp.jl")
import .Tmp
# using .Tmp # we can use using to bring the exported symbols in Tmp into our namespace

Tmp.say_hello()
# say_hello()

# your other test code here

并把测试作为 Tmp 的内容。或者，你可以把测试文件的内容打包到一个模块中，例如

module Tst
include("Tmp.jl")
import .Tmp
#using .Tmp

Tmp.say_hello()
# say_hello()

# your other test code here
end

优点是你的测试代码现在包含在一个模块中，并且不会在 Main 的全局作用域中引入新定义，这样更加整洁。

• 使用 include("tst.jl") 来在 Julia REPL 中 include tst.jl 文件。

• 打肥皂，冲洗，重复。（译者注：此为英语幽默，被称为“洗发算法”julia REPL 中摸索不同的想法，把好的想法存入 tst.jl。要在 tst.jl 被更改后执行它，只需再次 include 它。

## Revise-based workflows

Whether you're at the REPL or in IJulia, you can typically improve your development experience with Revise. It is common to configure Revise to start whenever julia is started, as per the instructions in the Revise documentation. Once configured, Revise will track changes to files in any loaded modules, and to any files loaded in to the REPL with includet (but not with plain include); you can then edit the files and the changes take effect without restarting your julia session. A standard workflow is similar to the REPL-based workflow above, with the following modifications:

1. Put your code in a module somewhere on your load path. There are several options for achieving this, of which two recommended choices are:

a. For long-term projects, use PkgTemplates:

julia using PkgTemplates t = Template() generate("MyPkg", t) This will create a blank package, "MyPkg", in your .julia/dev directory. Note that PkgTemplates allows you to control many different options through its Template constructor.

In step 2 below, edit MyPkg/src/MyPkg.jl to change the source code, and MyPkg/test/runtests.jl for the tests.

b. For "throw-away" projects, you can avoid any need for cleanup by doing your work in your temporary directory (e.g., /tmp).

Navigate to your temporary directory and launch Julia, then do the following:

julia pkg> generate MyPkg # type ] to enter pkg mode julia> push!(LOAD_PATH, pwd()) # hit backspace to exit pkg mode If you restart your Julia session you'll have to re-issue that command modifying LOAD_PATH.

In step 2 below, edit MyPkg/src/MyPkg.jl to change the source code, and create any test file of your choosing.

Before loading any code, make sure you're running Revise: say using Revise or follow its documentation on configuring it to run automatically.
Then navigate to the directory containing your test file (here assumed to be "runtests.jl") and do the following:
julia> using MyPkg
julia> include("runtests.jl")
You can iteratively modify the code in MyPkg in your editor and re-run the tests with include("runtests.jl"). You generally should not need to restart your Julia session to see the changes take effect (subject to a few limitations, see https://timholy.github.io/Revise.jl/stable/limitations/).