On 2020-05-13 22:27, Bruce Gray wrote:
On May 13, 2020, at 9:37 PM, ToddAndMargo via perl6-users <perl6-us...@perl.org> wrote: Hi All, Do we have anything like Bash's "." statement where we can read in a bunch of values from a .cfg file? (I think it is called "include", but I am not sure.) . /etc/sysconfig/network-scripts/ifcfg-br0 which populates these (and other) variables DEVICE=br0 TYPE=Bridge ONBOOT=yes USERCTL=yes DELAY=0 NM_CONTROLLED=yes BOOTPROTO=none PREFIX=24 ... Many thanks, -THi Todd, FYI, the `.` Bash command is also called `source`, which is easier to search on the Web, and clearer in email: https://ss64.com/bash/source.html The closest equivalent in Raku is: https://docs.raku.org/routine/EVALFILE , which could be used for config data like so: $ cat a.dat $foo = "bar"; $baz = "quxx"; $ perl6 -e 'our ($foo, $baz); EVALFILE "a.dat"; .say for $foo, $baz;' bar quxx , but please do not use it for this purpose. EVALFILE is in all-caps to show that it might be dangerous and not for general use; it is “grep-able evil”, and could eval any valid Raku code, even evil things like `run “rm -rf /“`. IMHO, Bash's `source`-style of loading variables pollutes the main namespace and causes hard-to-debug “action at a distance”. In Raku (or any other dynamic language), the use of some kind of Config module is safer and cleaner: https://modules.raku.org/t/CONFIG https://github.com/raku-community-modules/perl6-Config-JSON https://github.com/Skarsnik/perl6-config-simple https://metacpan.org/pod/Config::Tiny For example: $ cat config.json { "baz": "quxx", "foo": "bar” } $ perl6 -e 'use Config::JSON; my %c; %c{$_} = jconf($_) for <foo baz>; say %c{$_} for <foo baz>;' bar quxx $ cat b.dat foo = bar baz = quxx $ perl6 -e 'use Config::Tiny:from<Perl5>; my $conf = Config::Tiny.read("b.dat"); .say for $conf<_><foo baz>' bar quxx — Hope this helps, Bruce Gray (Util of PerlMonks)
Hi Bruce, I looked at the first two links above. Neither showed the format of the data being read. But you did. Is there some reason why the two links did not show the format? -T
