Null object: Difference between revisions
→{{header|BASIC}}
Line 269:
=={{header|BASIC}}==
==={{header|Applesoft BASIC}}===
Line 304 ⟶ 305:
t{} is null
</pre>
==={{header|GWBASIC/QBasic/QB/VBDOS}}===
These dialects of BASIC have no built-in object system. One STRING variable can have a default empty ("") value and a numeric one a default zero (0) value. A STRING variable can be assigned with the NULL (Chr$(0)) value if needed and can be assesed with the instruction.
<lang BASIC>
IF VAR$ = CHR$(0) THEN PRINT "Variable has a null value."
</lang>
=={{header|Bracmat}}==
| |||