Chapter 5

Expressions

Expressions in Haxe define what a programdoes. Most expressions are found in the body of a

method (4.3), where they are combined to express what that method should do. This section

explains the different kinds of expressions. Some definitions help here:

Definition: Name

A general name may refer to

• a type,


• a local variable,


• a local function or


• a field.

Definition: Identifier

Haxe identifiers start with an underscore_, a dollar$, a lower-case charactera-zor an

upper-case characterA-Z. After that, any combination and number of_,A-Z,a-zand0-9

may follow.

Further limitations follow from the usage context, which are checked upon typing:

• Type names must start with an upper-case letterA-Zor an underscore_.


• Leading dollars are not allowed for any kind of name ( 5 ) (dollar-names are mostly used
  for macro reification (9.3)).

5.1 Blocks.............................................

A block in Haxe starts with an opening curly brace{and ends with a closing curly brace}.A

block may contain several expressions, each of which is followed by a semicolon;. The general

syntax is thus:

1 {
2 expr1;
3 expr2;