Truthy and Falsy

In programming, anything that returns true in a conditional is called truthy. Anything that returns false in a conditional is called falsy. All object types can be described as either truthy or falsy.

All values in ZML are truthy except nil and false. Strings, even when empty, are truthy.
The falsy values in ZML are nil and false.

Summary

The table below summarizes what is truthy or falsy in ZML.

	Truthy	Falsy
true	•
false		•
nil		•
string	•
empty string	•
0	•
integer	•
float	•
array	•
empty array	•
page	•
EmptyDrop	•