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println(find("McDonald")) # will throw</lang>
println(find("McDonald")) # will throw</lang>
=={{header|Elena}}==
=={{header|Elena}}==
ELENA 4.1 :
ELENA 5.0 :
<lang elena>import system'routines;
<lang elena>import system'routines;
import extensions;
import extensions;
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public program()
public program()
{
{
var haystack := new string[]::("Zig", "Zag", "Wally", "Ronald", "Bush", "Krusty", "Charlie", "Bush", "Bozo");
var haystack := new string[]{"Zig", "Zag", "Wally", "Ronald", "Bush", "Krusty", "Charlie", "Bush", "Bozo"};
new string[]::("Washington", "Bush").forEach:(needle)
new string[]{"Washington", "Bush"}.forEach:(needle)
{
{
var index := haystack.indexOfElement:needle;
var index := haystack.indexOfElement:needle;