Smart Completion

Smart Code Completion filters the list of types, methods, and variables to match the expected type of an expression. It works anywhere as long as ReSharper can determine the expected type of the expression, for example, right-hand sides of assignments, variable initializers, or return statements. If several return types are possible, ReSharper detects the most recently used symbol of an applicable type and automatically selects it in the lookup list. Smart Completion can also suggest creating anonymous delegates, lambda expressions, and regular methods, as well as local variables for out parameters. In addition to that, in object initializers, Smart Completion suggests fields/properties that were not yet assigned a value.

You can use the following examples to get an idea of how Smart Code Completion works with various code items:

• After a return statement
• In the right-hand side of assignments
• In cast expressions
• In object initializers
• In lambda expressions
• Creating a local variable in place of an out parameter
• Using CamelHumps

After a return statement

In the right-hand side of assignments

In cast expressions

Before:

After launching Smart Completion (since there's a single option in this case, ReSharper inserts the expected type without displaying a drop-down list):

In object initializers

ReSharper provides Smart Completion for setting properties in object initializers that were not previously set for a particular object:

In lambda expressions

In addition to traditional anonymous and named methods, Smart Completion readily generates lambda-expression syntax:

Creating a local variable in place of an out parameter

Using camelhumps