Any Returns true if all values are true.

Any Returns true if arr contain any true value.

AsBoolMap arr -> [value]bool.

Count arr -> [value]count.

ValueIndex arr -> [value]index.

AsMap arr -> [key]value.

Concat arrays with copy.

Count returns the count of value in arr.

CountBy returns the count of value in arr by given function.

Filter.

Filter returns a new slice containing the results of applying fn to each, keep filter(v, i) == true.

GroupByOne group by one value.

Index returns the index of the first instance of value in arr, or -1 if value is not present in arr.

Map.

Map returns a new slice containing the results of applying fn to each.

Reduce.

Reduce returns a new slice containing the results of applying fn to each.

Reindex 按indexes设置索引.

Remove removes the first instance of t from list.

RemoveAll removes all instances of t from list.

Sort sorts the slice according to the fileds function.