Editing Ternary conditional operator (section)

===Dart===
The [[Dart (programming language)|Dart]] programming language's syntax belongs to the [[C (programming language)|C]] family, primarily inspired by languages like Java, C# and JavaScript, which means it has inherited the traditional {{code|?:}} syntax for its conditional expression.

Example:

<syntaxhighlight lang="Dart">
return x.isEven ? x ~/ 2 : x * 3 + 1;
</syntaxhighlight>

Like other conditions in Dart, the expression before the {{code|?}} must evaluate to a [[Boolean]] value.

The Dart syntax uses both {{code|?}} and {{code|:}} in various other ways, which causes ambiguities in the language grammar. An expression like:

<syntaxhighlight lang="Dart">
{ x as T ? [1] : [2] }
</syntaxhighlight>

could be parsed as either a "set literal" containing one of two lists ''or'' as a "map literal" <code>{((x as T?)[1]) : [2]}</code>. The language always chooses the conditional expression in such situations.

Dart also has a second ternary operator, the {{code|1=[]=}} operator commonly used for setting values in lists or maps, which makes the term "the ternary operator" ambiguous in a Dart context.