Perl · Easy

Lesson 1 · On the house

Regex match basics

m//, =~, capture $1, /x light.

Lesson 2

Regex substitute

s///, /g, return value.

Lesson 3

Split and join

split, join, limit sketch.

Lesson 4

References

\$x, \@a, \%h, $$r / @$r / %$r / ->.

Lesson 5

Anonymous structures

[...], {...}, $href->{key}.

Lesson 6

Complex data

AoH / HoA sketches with refs.

Lesson 7

File I/O

three-arg open, while (<$fh>), close.

Lesson 8

Modules and use

use List::Util, @INC, require vs use.

Lesson 9

Packages and OO sketch

package, bless, method arrow.

Lesson 10

Easy capstone

Regex, refs, file read — one script.