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Initializer Expressions

Initializer Expressions

When the base expression of a call is a type instead of a value, the expression is an initializer expression:

float2(1.0f, 2.0f)

An initializer expression initialized an instance of the specified type using the given arguments.

An initializer expression with only a single argument is treated as a cast expression:

// these are equivalent
int(1.0f)
(int) 1.0f

Initializer List Expression

An initializer list expression comprises zero or more expressions, separated by commas, enclosed in {}:

{ 1, "hello", 2.0f }

An initialier list expression may only be used directly as the initial-value expression of a variable or parameter declaration; initializer lists are not allowed as arbitrary sub-expressions.

Note: This section will need to be updated with the detailed rules for how expressions in the initializer list are used to initialize values of each kind of type.