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explicit mention: module identifier is an atom #1278

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Merged
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Jun 12, 2019
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explicit mention: module identifier is an atom #1278

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explicit mention: module identifier is an atom
mfrasca Jun 12, 2019
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Update supervisor-and-application.markdown
josevalim Jun 12, 2019
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2 changes: 1 addition & 1 deletion getting-started/mix-otp/supervisor-and-application.markdown
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Expand Up @@ -120,7 +120,7 @@ If you revisit the `KV.Registry.start_link/1` implementation, you will remember
end
```

which in turn will register the process with the given name. The `:name` option expects an atom for locally named processes (locally named means it is available to this machine - there are other options, which we won't discuss here). We often name a process after the module that implements it, which helps when debugging and introspecting the system.
which in turn will register the process with the given name. The `:name` option expects an atom for locally named processes (locally named means it is available to this machine - there are other options, which we won't discuss here). Since module identifiers are atoms (try `i(KV.Registry)` in IEx), we can name a process after the module that implements it, provided there is only one process for that name. This helps when debugging and introspecting the system.

Let's give the updated supervisor a try inside `iex -S mix`:

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