You shell out multiple times. The performance of the Perl code seems inconsequential.

This post will cover some cleanups (but leaves the important question of parallelism unanswered).

I don't think 

map { $1 if /^\w+:\s+(\w+)\b/ }

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has a defined behaviour. You want 

map { /^\w+:\s+(\w+)\b/ }

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And the grep { /^\w+:/ } is completely redundant.

Backticks returns the captured output as lines in list context, so 

split /\n/, `gst-inspect-1.0`

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can be replaced with 

`gst-inspect-1.0`

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It's not equivalent since it leaves the line feeds in, but that's not an issue for you.

Cleaned: 

my %plugins =
    map { $_ => scalar `gst-inspect-1.0 $_` }
        map { /^\w+:\s+(\w+)\b/ }
            `gst-inspect-1.0`;

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You could even combine the two maps, but I wouldn't. 
my %plugins =
    map { /^\w+:\s+(\w+)\b/ ? $1 => scalar `gst-inspect-1.0 $1` : () }
        `gst-inspect-1.0`;

[download]

Seeking work! You can reach me at ikegami@adaelis.com

In reply to Re: More Effecient Method Chaining by ikegami
in thread More Effecient Method Chaining by fennewald

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