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fp_bash
135 lines (123 loc) · 2.67 KB
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fp_bash
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# vim: set filetype=sh :
map() {
local callback elements
if type "$1" > /dev/null 2>&1; then
callback="$1"
else
eval "_mapCb()${1}" > /dev/null 2>&1 || return 1
callback=_mapCb
fi
if (($# > 1)); then
elements=("${@:2}")
else
mapfile -t elements
fi
[ "${#elements[@]}" -eq 1 ] && [ -z "${elements[@]}" ] && return
for el in "${elements[@]}"; do
printf "$("$callback" "$el")\n"
done
}
# map '( echo $(( $1 + 2 )) )' < <(printf "%s\n" 2 3 4 5 6)
# 11
# 12
# 13
# 14
# 15
filter() {
local callback elements
if type "$1" > /dev/null 2>&1; then
callback="$1"
else
eval "_filterCb()${1}" > /dev/null 2>&1 || return 1
callback=_filterCb
fi
if (($# > 1)); then
elements=("${@:2}")
else
mapfile -t elements
fi
[ "${#elements[@]}" -eq 1 ] && [ -z "${elements[@]}" ] && return
for el in "${elements[@]}"; do
"$callback" "$el" && printf "$el\n"
done
}
# filter '( (( $1 % 2 )) )' < <(printf "%s\n" 1 2 3 4 5)
# 1
# 3
# 5
reduce() {
local callback elements accelerator
if type "$1" > /dev/null 2>&1; then
callback="$1"
else
eval "_reduceCb()${1}" > /dev/null 2>&1 || return 1
callback=_reduceCb
fi
if (($# > 2)); then
elements=("${@:3}")
else
mapfile -t elements
fi
[ "${#elements[@]}" -eq 1 ] && [ -z "${elements[@]}" ] && return
accelerator="$2"
for el in "${elements[@]}"; do
accelerator="$(printf "$("$callback" "$accelerator" "$el")")"
done
printf "$accelerator"
}
# reduce '( echo $(( $1 + $2 )) )' 0 < <(printf "%s\n" 1 2 3 4 5)
# 20
forEach() {
local callback elements
if type "$1" > /dev/null 2>&1; then
callback="$1"
else
eval "_forEachCb()${1}" > /dev/null 2>&1 || return 1
callback=_forEachCb
fi
if (($# > 1)); then
elements=("${@:2}")
else
mapfile -t elements
fi
[ "${#elements[@]}" -eq 1 ] && [ -z "${elements[@]}" ] && return
for el in "${elements[@]}"; do
"$callback" "$el"
done
}
# forEach '( notify-send $1 )' < <(printf "%s\n" 1 2 3 4 5)
some() {
local callback elements
if type "$1" > /dev/null 2>&1; then
callback="$1"
else
eval "_someCb()${1}" > /dev/null 2>&1 || return 1
callback=_someCb
fi
if (($# > 1)); then
elements=("${@:2}")
else
mapfile -t elements
fi
[ "${#elements[@]}" -eq 1 ] && [ -z "${elements[@]}" ] && return
for el in "${elements[@]}"; do
"$callback" "$el" && return 0
done
return 1
}
# some '((( $1 % 2 )))' < <(printf "%s\n" 1 2 3 4 5)
# echo $?
# 0
split() {
local -a array
while IFS="$2" read -ra array; do
for i in "${array[@]}"; do
printf "%s\n" "$i"
done
done <<< "$1"
}
# split 'Hello,World,Good,Evening' ','
# Hello
# World
# Good
# Evening