<![CDATA[Check if array key exists via the in operator]]>The in operator doesn't seem to be acting like I would expect. In this snippet of code it should be printing 0 but it always prints 1.

var myObj = {pie:"apple", cake:"chocolate", sausage:"dog"};

if ("fish" in myObj)
{
	Console.print(1);
}
else 
{
	Console.print(0);
}
]]>https://forum.hise.audio/topic/57/check-if-array-key-exists-via-the-in-operatorRSS for NodeMon, 12 Oct 2026 13:20:59 GMTFri, 14 Oct 2016 16:42:53 GMT60<![CDATA[Reply to Check if array key exists via the in operator on Fri, 14 Oct 2016 23:09:51 GMT]]>Thank you :)

]]>https://forum.hise.audio/post/279https://forum.hise.audio/post/279Fri, 14 Oct 2016 23:09:51 GMT<![CDATA[Reply to Check if array key exists via the in operator on Fri, 14 Oct 2016 22:53:04 GMT]]>Yeah, the in operator is only used for the iterator loop.

But you can test if the key exists like this:

var myObj = {"pie":"apple", "cake":"chocolate", "sausage":"dog"};

inline function keyExists(obj, key)
{
	return !(obj[key] == void); // Important: not undefined!
}

if (keyExists(myObj, "fish"))
{
	Console.print(1);
}
else 
{
	Console.print(0);
}
]]>https://forum.hise.audio/post/274https://forum.hise.audio/post/274Fri, 14 Oct 2016 22:53:04 GMT