Skip to main content

obsolete_colon_for_default_value

Using a colon as the separator before a default value is no longer supported.

Description

#

The analyzer produces this diagnostic when a colon (:) is used as the separator before the default value of an optional named parameter. While this syntax used to be allowed, it was removed in favor of using an equal sign (=).

Example

#

The following code produces this diagnostic because a colon is being used before the default value of the optional parameter i:

dart
void f({int i : 0}) {}

Common fixes

#

Replace the colon with an equal sign:

dart
void f({int i = 0}) {}