$ perl -MO=Concise,-exec -e'@b = map { foo() } @a'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark s
4  <0> pushmark s
5  <#> gv[*a] s
6  <1> rv2av[t6] lKM/1
7  <@> mapstart lK*/2
8  <|> mapwhile(other->9)[t7] lK/1
9      <0> pushmark s
a      <#> gv[*foo] s/EARLYCV
b      <1> entersub[t4] lKS/TARG,1
-      <@> scope lK
           goto 8
c  <0> pushmark s
d  <#> gv[*b] s
e  <1> rv2av[t2] lKRM*/1
f  <2> aassign[t8] vKS/COMMON
g  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'@b = grep { foo() } @a'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark s
4  <0> pushmark s
5  <#> gv[*a] s
6  <1> rv2av[t6] lKM/1
7  <@> grepstart lK*/2
8  <|> grepwhile(other->9)[t7] lK/1
9      <0> pushmark s
a      <#> gv[*foo] s/EARLYCV
b      <1> entersub[t4] sKS/TARG,1
-      <@> scope sK
           goto 8
c  <0> pushmark s
d  <#> gv[*b] s
e  <1> rv2av[t2] lKRM*/1
f  <2> aassign[t8] vKS/COMMON
g  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'for (@a) { foo() }'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark sM
4  <#> gv[*a] s
5  <1> rv2av[t2] sKRM/1
6  <#> gv[*_] s
7  <{> enteriter(next->c last->f redo->8) lKS
d  <0> iter s
e  <|> and(other->8) vK/1
8      <;> nextstate(main 1 -e:1) v
9      <0> pushmark s
a      <#> gv[*foo] s/EARLYCV
b      <1> entersub[t4] vKS/TARG,1
c      <0> unstack v
           goto d
f  <2> leaveloop vK/2
g  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'@b = sort foo @a'
1  <0> enter
2  <;> nextstate(main 1 -e:1) v
3  <0> pushmark s
4  <0> pushmark s
5  <$> const[PV "foo"] s/BARE
6  <#> gv[*a] s
7  <1> rv2av[t4] lK/1
8  <@> sort lKS
9  <0> pushmark s
a  <#> gv[*b] s
b  <1> rv2av[t2] lKRM*/1
c  <2> aassign[t5] vKS
d  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'@b = sort { foo() } @a'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark s
4  <0> pushmark s
5  <#> gv[*a] s
6  <1> rv2av[t6] lK/1
7  <@> sort lKS*        --> I guess the * means the sub is
8  <0> pushmark s           attached to the op rather than
9  <#> gv[*b] s             found on the stack.
a  <1> rv2av[t2] lKRM*/1
b  <2> aassign[t7] vKS
c  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'sub faker(&); faker { foo() }'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark s
4  <0> pushmark sRM
5  <$> anoncode[CV ] lRM
6  <1> refgen KM/1
7  <#> gv[*faker] s
8  <1> entersub[t3] vKS/TARG,1
9  <@> leave[1 ref] vKP/REFC
-e syntax OK

##</code><code>##

$ perl -MO=Concise,-exec -e'sub faker(&); faker sub { foo() }'
1  <0> enter
2  <;> nextstate(main 2 -e:1) v
3  <0> pushmark s
4  <0> pushmark sRM
5  <$> anoncode[CV ] lRM
6  <1> refgen KM/1
7  <#> gv[*faker] s
8  <1> entersub[t3] vKS/TARG,1
9  <@> leave[1 ref] vKP/REFC
-e syntax OK