檢查Bash數(shù)組是否包含值在Bash中，最簡(jiǎn)單的測(cè)試數(shù)組是否包含某個(gè)值的方法是什么？編輯*在答案和評(píng)論的幫助下，經(jīng)過一些測(cè)試，我得出如下結(jié)論：function contains() {
local n=$#
local value=${!n}
for ((i=1;i < $#;i++)) {
if [ "${!i}" == "${value}" ]; then
echo "y"
return 0
fi
}
echo "n"
return 1}A=("one" "two" "three four")if [ $(contains "${A[@]}" "one") == "y" ]; then
echo "contains one"fiif [ $(contains "${A[@]}" "three") == "y" ]; then
echo "contains three"fi我不確定這是否是最好的解決方案，但似乎有效。
3 回答
千萬里不及你
TA貢獻(xiàn)1784條經(jīng)驗(yàn) 獲得超9個(gè)贊
陪伴而非守候
TA貢獻(xiàn)1757條經(jīng)驗(yàn) 獲得超8個(gè)贊
下面是實(shí)現(xiàn)這一目標(biāo)的一個(gè)小功能。搜索字符串是第一個(gè)參數(shù)，其余的是數(shù)組元素：
containsElement () {
local e match="$1"
shift
for e; do [[ "$e" == "$match" ]] && return 0; done
return 1
}
該函數(shù)的測(cè)試運(yùn)行如下所示：
$ array=("something to search for" "a string" "test2000")
$ containsElement "a string" "${array[@]}"
$ echo $?
0
$ containsElement "blaha" "${array[@]}"
$ echo $?
1
小怪獸愛吃肉
TA貢獻(xiàn)1852條經(jīng)驗(yàn) 獲得超1個(gè)贊
array_to_string_internal()
if [[ " ${array[@]} " =~ " ${value} " ]]; then
# whatever you want to do when arr contains valuefiif [[ ! " ${array[@]} " =~ " ${value} " ]]; then
# whatever you want to do when arr doesn't contain valuefiarray=("Jack Brown")value="Jack"JackIFS
IFS=$'\t'array=("Jack Brown\tJack Smith")unset IFS
value="Jack Smith"if [[ "\t${array[@]}\t" =~ "\t${value}\t" ]]; then
echo "yep, it's there"fi- 3 回答
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