Be concise.
Be useful.
All contributions dictatorially edited by webmasters to match personal tastes.
Please do not paste any copyright violating resource.
Please try to avoid dependencies to third-party libraries and frameworks.
func Contains(list []T, x T) bool {
for _, item := range list {
if item == x {
return true
}
}
return false
}
#include <vector>
bool Contains(vector<T> list, T x)
{
for (vector<T>::iterator it = list.begin() ; it != list.end() ; ++it)
{
if (*it == x)
return true;
}
return false;
}
#include <vector> #include <algorithm>
bool Contains(const std::vector<int> &list, int x)
{
return std::find(list.begin(), list.end(), x) != list.end();
}
list.include?( x )
(define (contains list x)
(cond
((null? list) #f)
((eq? (car list) x) #t)
(else (contains (cdr list) x))))
x in list
boolean contains(int[] list, int x){
for(int y:list)
if( y==x )
return true;
return false;
}
boolean <T> contains(T[] list, T x){
if( x==null){
for(T y:list)
if( y==null )
return true;
}else{
for(T y:list)
if( x.equals(y) )
return true;
}
return false;
}
import java.util.List;
list.contains(x)
# To check an array for a value:
print "Found 'foo'\n" if grep { $_ eq 'foo' } @a_list;
# To check a map for a value:
print "Found 'bar'\n" if exists $map{bar};
list.indexOf(x) !== -1
list.contains(&x);
import std.algorithm.searching;
bool here = canFind(items, x);
list.contains(x);
result := false; for e in list do if e=x then begin result := true; break; end
uses classes;
result := list.IndexOf(x) <> -1;
x `elem` list
(some (partial = x) list)
Enum.member?(list, x)
lists:member(X, List).
#include <stdbool.h>
bool contains(int x, int* list, size_t list_len) {
for (int i=0 ; i<list_len ; i++)
if (list[i] == x)
return true;
return false;
}
function contains(list, x) for _, v in pairs(list) do if v == x then return true end end return false end
with Ada.Containers.Vectors;
Result := Items.Contains (X);
System.Collections.Generic
list.Contains(item);
val items: Seq[String] = List("a", "b", "c")
items.contains("a")
list.includes(x)
list.iter().any(|v| v == &x)
(&list).into_iter().any(|v| v == &x)
member(_, []) -> false;
member(Value, [H|T]) ->
case H of
Value -> true;
_ -> member(T)
end.
member(_, []) -> false; member(Value, [H|_]) where Value =:= H -> true; member(Value, [_|T]) -> member(Value, T).