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Is there a way to chain :reload/:r along with :main as a single command in GHCi?
The goal here is to avoid typing both every time I change something in my other terminal, but to just type ↑Enter.
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Basic Haskell Commands :quit (or :q) :load [filename] (or :l [filename]) :reload -- reload the current file set after you'ved edited it (or :r) :cd -- change to another directory.
If you have installed the Haskell Platform, open a terminal and type ghci (the name of the executable of the GHC interpreter) at the command prompt. Alternatively, if you are on Windows, you may choose WinGHCi in the Start menu. And you are presented with a prompt. The Haskell system now attentively awaits your input.
The syntax for importing modules in a Haskell script is import <module name>. This must be done before defining any functions, so imports are usually done at the top of the file. One script can, of course, import several modules. Just put each import statement into a separate line.
On Windows, use Ctrl + L for Haskell command prompt terminal. And, for GUI use Ctrl + S. Save this answer.
:cmd seems to accept string with multiple lines.
Therefore you can do the following command.
:cmd return $ unlines [":reload",":main"]
also you can add following code to ~/.ghci
:def hoge const $ return $ unlines [":reload",":main"]
now you can execute :hoge in ghci
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