[Catalyst] YAML Config

[Oleg Pronin]

>
> >I don't even know what those do. Why do you want them?


&anchors are used to define an anchor on variable.
*aliases are used to insert previously defined anchor's value.

For example,
root_dir: &root /very/long/path/to/root/dir
root_dir2: *root

print MyApp->config->{root_dir2}; # /very/long/path/to/root/dir
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