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typeset -a a
a=(1 2 3 4)
typeset -A A
A=([one]=1 [two]=2 [three]=3 [four]=4)
unset 'a[0]'
typeset -p a
scalar=abcd
echo ${scalar[0]}
unset 'scalar[0]'
echo ${scalar-unset}
unset 'a[@]'
typeset -p a
unset 'A[@]'
typeset -p A
typeset -a a
a=(1 2 3 4)
typeset -A A
A=([one]=1 [two]=2 [three]=3 [four]=4)
# supported, recommended way to unset all array elements
a=()
typeset -p a
A=()
typeset -p A
declare -a foo
declare foo='(1 2 3)'
declare foo[1]='(4 5 6)'
declare -p foo
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