12 lines
585 B
Plaintext
12 lines
585 B
Plaintext
'''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.
|
|
|
|
|
|
;Task:
|
|
Show how to access null in your language by checking to see if an object is equivalent to the null object.
|
|
|
|
|
|
''This task is not about whether a variable is defined. The task is about "null"-like values in various languages, which may or may not be related to the defined-ness of variables in your language.''
|
|
<br><br>
|