How to expand the elements of an array in zsh? -

How to expand the elements of an array in zsh? -

say have array in zsh

a=(1 2 3)

i want append .txt each element

echo ${a}.txt # doesn't work

so output is

1.txt 2.txt 3.txt

update:

i guess can this, think there's more idiomatic way:

for in $a; echo $i.txt done

you need set rc_expand_param option:

$ setopt rc_expand_param $ echo ${a}.txt 1.txt 2.txt 3.txt

from zsh manual:

rc_expand_param (-p) array expansions of form `foo${xx}bar', parameter xx set (a b c), substituted `fooabar foobbar foocbar' instead of default `fooa b cbar'. note empty array hence cause arguments removed.

you can set alternative for 1 array expansion using ^ flag:

$ echo ${^a}.txt 1.txt 2.txt 3.txt $ echo ${^^a}.txt 1 2 3.txt

again citing zsh manual:

${^spec} turn on rc_expand_param alternative evaluation of spec; if `^' doubled, turn off. when alternative set, array expansions of form foo${xx}bar, parameter xx set (a b c), substituted `fooabar foobbar foocbar' instead of default `fooa b cbar'. note empty array hence cause arguments removed.

arrays zsh variable-expansion