Special characters are used in conjunction with structural characters and literals to provide additional functionality or context within an Internet Object document. The following are the special characters used in the Internet Object format.
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| Symbol | Characters | Unicode | Application |
|---|---|---|---|
?
Question Mark
U+003F
Shortcut for declaring optional member when suffixed to the key name in object schema
*
Asterisk
U+002A
Shortcut for declaring nullable member when suffixed to the key name in object schema. Also used to make schema accept undeclared variables.
-
Hyphen / Minus
U+002D
Represents negative value
+
Plus
U+002B
Represents positive value
$
Dollar
U+0024
Denotes a variable