Errata

The last three rows are intended to cover the `:` ratchet operator. The "Quantifier" column is correct, but in each of these rows the "Example" column has a `?` quantifier modifier instead of `:`.

Also, in the fourth line from the botom, `b?:` is given the Meaning "Zero or more b's without backtracking." That should be "Zero or one b's without backtracking". Though it probably means "One b (a trivial case)".

put '2: ', $thingy1 - should be $thingy2

Sample output missing escaped $.

answer is: ... should be $answer is:

The examples on page 94 (bottom) and page 95 (whole page) describe the use of the 'lines()' routine. While the code example on page 94 on the lower half of the page works, (section entitled, "Reading lines of input"), the code example on the top of page 95 does not work as described.

Specifically, the text says, "The lines routine can take an argument that tells it how many lines to grab:" Code example page 95 (top):

for lines(17) {
put "Got line $_";
}

Instead of grabbing the first 17 lines of an input file, running the above code will output the string below (no quotes):

"Got line 17"

I refer the author to the Perl6 Documentation for recent updates to the 'lines()' routine:

https://docs.perl6.org/routine/lines

$hash{ bar.foo } = 1; # that's the key 'foobar'
should be
$hash{ foo.bar } = 1; # that's the key 'foobar'

U+0OBC
should be
U+00BC

The closing angle bracket (>) is missing.
\k<label
should be
\k<label>

The 4 results of the set comparison seems to be:

True
True
False
False

There is no :g adverb in the example .

There is no backtracking : modifier in these two examples in table 16-1 .

I'm guessing you want put '3: ', $thingy3;

If so, need to update sample outputs on page 352.

In the $block statement of this solution the indexing of the second comparison is wrong. It should rather be:

$s.index( $^a.[1] ) <=> $s.index( $^b.[1] )

instead of the current

$s.index( $^a.[0] ) <=> $s.index( $^b.[0] )

which sometimes throws an error.