Anonymous user
Null object: Difference between revisions
Tweak task description after I renamed this page. Link to undefined values.
m (moved Undefined values/Check if a variable is defined to Null object: Page title was *wrong*. This task is *not* about whether a variable is defined.) |
(Tweak task description after I renamed this page. Link to undefined values.) |
||
Line 1:
{{task|Basic language learning}}'''Null''' (or '''nil''') is the computer science concept of an undefined or unbound object. Some languages have an explicit way to access the null object, and some don't. Some languages distinguish the null object from [[undefined values]], and some don't.
Show how to access null in your language by checking to see if an object is equivalent to the null object.
''
=={{header|ActionScript}}==
| |||