grep.regexp vs grep.contains for 2020_12 and 2021_06

gistfile1.txt

[root@23f7111def19 r3tool]# SP6_FORMAT_TERSE=1 tomty --env=2020_12  pull_4383
load configuration from /root/projects/r3tool/.tomty/env/config.2020_12.pl6
index updated from file:///root/repo/api/v1/index
cat $root_dir/task.bash

$RAKUBIN -v
echo; echo; echo;

echo ".grep( { } )"
( time $RAKUBIN -e 'my $txt = slurp "/usr/share/dict/words"; for (1..1000) { my (@m) = $txt.grep( { m:i/ <!after i> e / } ) }' ) 2>&1
echo ===

echo "grep( *.contains )"
( time $RAKUBIN -e 'my $txt = slurp "/usr/share/dict/words"; for (1..1000) { my (@m) = $txt.grep( *.contains( /:i <!after i> e / ) ) }' ) 2>&1
echo ===
Welcome to Rakudo(tm) v2020.12.
Implementing the Raku(tm) programming language v6.d.
Built on MoarVM version 2020.12.



.grep( { } )

real    0m4.350s
user    0m4.315s
sys     0m0.157s
===
grep( *.contains )

real    0m4.116s
user    0m4.187s
sys     0m0.108s
===


[root@23f7111def19 r3tool]# SP6_FORMAT_TERSE=1 tomty --env=2021_06  pull_4383
load configuration from /root/projects/r3tool/.tomty/env/config.2021_06.pl6
index updated from file:///root/repo/api/v1/index
cat $root_dir/task.bash

$RAKUBIN -v
echo; echo; echo;

echo ".grep( { } )"
( time $RAKUBIN -e 'my $txt = slurp "/usr/share/dict/words"; for (1..1000) { my (@m) = $txt.grep( { m:i/ <!after i> e / } ) }' ) 2>&1
echo ===

echo "grep( *.contains )"
( time $RAKUBIN -e 'my $txt = slurp "/usr/share/dict/words"; for (1..1000) { my (@m) = $txt.grep( *.contains( /:i <!after i> e / ) ) }' ) 2>&1
echo ===
Welcome to 𝐑𝐚𝐤𝐮𝐝𝐨™ v2021.05-43-g4887a169b.
Implementing the 𝐑𝐚𝐤𝐮™ programming language v6.d.
Built on MoarVM version 2021.06.



.grep( { } )

real    0m4.312s
user    0m4.312s
sys     0m0.117s
===
grep( *.contains )

real    0m4.197s
user    0m4.192s
sys     0m0.165s
===