Code cleanup

C#

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | C# | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

Reformat embedded XML doc comments

Reformats XML doc comments according to options configurable on the Code Editing | XML Doc Comments | Formatting Style page of ReSharper options .

Note that ReSharper does not reformat plain comments like:

or

C++

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | C++ | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

Visual Basic .NET

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | Visual Basic .NET | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

Reformat embedded XML doc comments

Reformats XML doc comments according to options configurable on the Code Editing | XML Doc Comments | Formatting Style page of ReSharper options .

Note that ReSharper does not reformat plain comments like:

or

XML

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | XML | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

HTML

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | HTML | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

CSS

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | CSS | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

JavaScript/TypeScript

Reformat code

Reformats your code according to the preferences that you can configure on the Code Editing | JavaScript/TypeScript | Formatting Style page of ReSharper options . For more information, see Apply formatting rules.

Reformat embedded XML doc comments

Reformats XML doc comments according to options configurable on the Code Editing | XML Doc Comments | Formatting Style page of ReSharper options .

Note that ReSharper does not reformat plain comments like:

or

C#

Apply 'var' style

Applies the rules for 'var' usage during the cleanup. The rules are configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O).

Use explicit or implicit modifier definition for types

Applies the rule for type modifiers - whether on not to use the internal modifier explicitly. The rule is configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Modifiers.

Use explicit or implicit modifier definition for type members

Applies the rule for type member modifiers - whether on not to use the private modifier explicitly. The rule is configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Modifiers.

Sort modifiers

Applies the preferred order of type/member modifiers. The rule is configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Modifiers.

Apply arguments style (named vs. positional)

Applies the preferences for named/positional arguments for specific types of parameters. The preferences are configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Named/Positional Arguments.

Remove redundant parentheses

Removes redundant optional parentheses in cases specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Optional Parentheses.

Add parentheses to explicitly specify operation precedence

Adds optional parentheses to clarify precedence of operations in cases specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Optional Parentheses.

Add/remove braces around single statements

Adds or removes optional braces around single nested statements as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Braces for Single Nested Statements.

Add/remove brackets for attributes

Applies the rules for multiple attributes as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Multiple Attributes.

Apply code body style (expression body vs. block body)

Applies preferences for bodies of type members (expression body or block body) as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code syntax style: bodies of type members.

Arrange trailing commas

Applies preferences for trailing commas in declarations with multiple items and similar constructs (object, array, and collection initializers, as well as enums and switch expressions) as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Trailing Commas.

Apply object creation style ('new()' vs 'new T()')

Applies preferences for using the target-typed new operator in C# 9.0 and later as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Object Creation ('new()' vs 'new T()').

Apply default value style ('default' vs 'default(T)')

Applies preferences for using optional type specification in default value expressions as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Default Value Expressions ('default' vs 'default(T)').

Arrange namespaces (file-scoped vs. block-scoped)

Applies preferences for using file-scoped namespace declarations in files containing a single namespace as specified on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code syntax style: file-scoped namespaces.

Arrange qualifiers

Applies the rules for qualifying type members. The rules are configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Optional Member Qualifiers.

Fix built-in type references

Applies the rule for built-in type names (C# keyword or CLR type name). The rule is configurable on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Code Syntax Style: Built-In Type References.

C/C++

Add/remove braces for single statements

Apply 'auto' style

Apply function declaration style (regular vs. trailing return types)

Apply nested namespaces style

Apply type alias style (typedefs vs. type aliases)

Arrange cv-qualifiers

Arrange slashes in include directives (forward slashes vs. backslashes)

Arrange specifiers ('virtual' and/or 'override') on overriding functions

Sort include directives

Sort member initializers

XAML

Collapse empty tags

Removes the closing tag if the tag body is empty.

HTML

Normalize quotes around attribute value

Applies the preferred quote style: single quote ' or double quote ", configurable on the Code Editing | HTML | Syntax Style page of ReSharper options (Alt+R, O).

JavaScript/TypeScript

Normalize quotes around string literal

Applies the preferred quote style: single quote ' or double quote ", configurable on the Code Editing | JavaScript/TypeScript | Syntax Style page of ReSharper options (Alt+R, O). For more information, see Quotes style.

Apply statement termination

Adds the optional semicolon ; at the end of statements in JavaScript, TypeScript, and JSON.

TypeScript specific

Synchronize 'public' presence with code style

This option lets you add or remove explicit 'public' modifier according to settings configurable on the Code Editing | TypeScript | Syntax Style page of ReSharper options (Alt+R, O).

Add explicit 'any' type annotation if needed

This option lets you add explicit 'any' annotation to types according to settings configurable on the Code Editing | TypeScript | Syntax Style page of ReSharper options (Alt+R, O).

Synchronize type annotation presence with code style

This option lets you enforce explicit/implicit type specification according to settings configurable on the Code Editing | TypeScript | Syntax Style page of ReSharper options (Alt+R, O).

Fix relative path style in 'require' if needed

Applies the Relative file reference style in 'require' code style preference for relative paths in the require keyword. For example, import X = require("file1") or import X = require("./file1"). You can configure this preference on the Code Editing | TypeScript | Syntax Style page of ReSharper options (Alt+R, O).

Use 'as' instead of type assertions

Replaces

with

which is a recommended way to avoid ambiguity with JSX syntax.

C#

Optimize 'using' directives

• Removes unused namespace import directives by implementing the rules that you can configure on the Code Editing | C# | Namespace Imports page of ReSharper options (Alt+R, O)

• Applies preferences for arranging namespace import directives and fully-qualified names when importing types, as specified on the Code Editing | C# | Syntax Style and Code Editing | Type Import options pages.

• Sorts the namespace import directives: all System.* namespaces go first, sorted alphabetically by the second word after the dot; all other namespaces go next, in alphabetical order. .

For more information, see Code Syntax Style: Namespace Imports.

Embrace 'using' directives in region

If this checkbox is selected, a new region for wrapping all namespace import directives is created during cleanup.

Region name

Allows specifying a name for the region wrapping namespace import directives.

Shorten qualified references

Replaces fully qualified names with short names when possible by importing namespaces, according to the preferences configured on the Code Editing | C# | Syntax Style page of ReSharper options (Alt+R, O)

Visual Basic .NET

Optimize 'import' directives

• Removes unused namespace import directives by implementing the rules that you can configure on the Code Editing | Visual Basic .NET | Namespace Imports page of ReSharper options (Alt+R, O)

• Applies preferences for arranging namespace import directives and fully-qualified names when importing types, as specified on the Code Editing | Visual Basic .NET | Syntax Style and Code Editing | Type Import options pages.

• Sorts the namespace import directives: all System.* namespaces go first, sorted alphabetically by the second word after the dot; all other namespaces go next, in alphabetical order. .

For more information, see Code Syntax Style: Namespace Imports.

Embrace 'using' directives in region

If this checkbox is selected, a new region for wrapping all namespace import directives is created during cleanup.

Region name

Allows specifying a name for the region wrapping namespace import directives.

Shorten qualified references

Replaces fully qualified names with short names when possible by importing namespaces, according to the preferences configured on the Code Editing | Visual Basic .NET | Syntax Style page of ReSharper options (Alt+R, O)

XAML

Remove redundant namespace alias

Remove all redundant namespace aliases in the scope of cleanup. Redundant aliases are also detected with the code inspection and can be removed with a quick-fix.

TypeScript specific

Optimize 'import' statements

Use this option to remove redundant 'import' statements or fully-qualified names according to the settings configurable on the Code Editing | TypeScript | Syntax Style page of ReSharper options (Alt+R, O).

Optimize reference comments

Use this option to remove redundant reference comments.

ASP.NET

Optimize @Register directives

Removes unused @Register directives.

C#

Apply file layout

Reorders type members in files according to the rules configurable on the Code Editing | C# | File Layout page of ReSharper options (Alt+R, O). For more information, see Rearrange members with file and type layout patterns.

CSS

Alphabetize properties

Rearranges CSS properties in the alphabetical order.

C#

Remove code redundancies

On the Code Inspection | Inspection Severity page of ReSharper options (Alt+R, O), in the Redundancies in Code categories of most languages, ReSharper lists dozens of cases that have associated code inspections. Some of them require special attention, and you cannot process them in the batch mode, but most of them can be fixed automatically whenever you select Remove code redundancies in your cleanup profile.

Use auto-property, if possible

Replaces simple properties and corresponding backing fields with auto-properties. For more information, see Use auto-properties.

Make field read-only, if possible

Adds the readonly keyword to fields that are assigned in the declaration or in a constructor and only have read usages. For more information, see Make fields readonly.

Make auto-property get-only, if possible

Removes the redundant set accessor on auto-properties that are initialized from the constructor/initializer and have no write usages.

By default, ReSharper automatically detects C# version based on the associated compiler. However, you can specify the target C# version explicitly for a project — right-click the project in the Solution Explorer, choose Edit project item properties from the context menu and use the C# Language Level selector .

To set the C# version for all projects in your solution, specify it in a Directory.Build.props file in your solution directory as described here.

C/C++

Add required 'typename' and 'template' keywords

Join declarations and assignments

Make local variables const

Make member functions 'const' when possible

Make member functions 'static' when possible

Remove redundant casts

Remove redundant 'else' keywords

Remove redundant elaborated type specifiers

Remove redundant lambda parameter lists

Remove redundant member initializers

Remove redundant parentheses

Remove redundant qualifiers

Remove redundant specifiers

Remove redundant statements

Remove redundant template arguments

Remove redundant 'typename' and 'template' keywords

Remove unreachable code

Remove unused #include directives

Remove unused lambda captures

Replace C-style and functional-style casts with static casts

Replace constants in boolean context with boolean literals

Replace if statements with constant conditions with 'if constexpr'

Replace postfix operators with prefix variants

Replace smart pointer constructors with make functions

Replace throw expressions with rethrow where possible

Replace type traits with corresponding template aliases or variable templates

Replace zero valued expressions in pointer context with nullptr

Replace 'tie(..)' with structured binding declarations

Use 'contains' for associative containers wherer possible

Use 'std::erase'/'std::eraseif' instead of remove-erase idiom

Visual Basic .NET

Remove code redundancies

On the Code Inspection | Inspection Severity page of ReSharper options (Alt+R, O), in the Redundancies in Code categories of most languages, ReSharper lists dozens of cases that have associated code inspections. Some of them require special attention, and you cannot process them in the batch mode, but most of them can be fixed automatically whenever you select Remove code redundancies in your cleanup profile.

XAML

Remove redundant 'Freeze' attribute

Removes Freeze attributes that are redundant in their context.

Remove redundant modifiers attribute

Removes modifiers attributes that are redundant in their context.

Remove redundant name attribute

Removes name attributes that are redundant in their context.

Remove redundant resource

Removes resource references that are not used

Remove redundant empty collection property setter

Remove redundant attached property setter

Removes unused setters for the attached properties.

Remove redundant style property setter

Removes unused setters for the style properties.

Remove forbidden name attribute

Removes name attributes that are not allowed in their context.

Remove redundant definitions

Removes definitions if they are redundant in the context.

Remove redundant UpdateSourceTrigger attribute

Removes UpdateSourceTrigger attributes that are redundant in their context.

Remove redundant Mode attribute

Removes Mode attributes that are redundant in their context.

Remove redundant span attribute

Removes span attributes that are redundant in their context.

JavaScript/TypeScript

Correct 'var' to 'let'/'const' where possible

let and const are supported in the following cases:

• In JavaScript code, if the target JavaScript language level is ECMAScript 6 (you can choose it on the Code Editing | JavaScript | Inspections page of ReSharper options (Alt+R, O))

• In TypeScript 1.4, if the target ECMAScript 6 is selected in the project properties.

• In TypeScript 1.5 or later.

Move let/const to most possible inner scopes

Moves variables defined outside of a function/compound statement, and so on closer to their usages if there are no other usages in outer scopes.

Convert string concatenations to template strings

In JavaScript code, if the target JavaScript language level is ECMAScript 6 (you can choose it on the Code Editing | JavaScript | Inspections page of ReSharper options (Alt+R, O)) , as well as in TypeScript 1.4 or later, this option will convert string concatenations to template strings. For example:

will be converted to

TypeScript specific

Remove redundant qualifiers

Use this option to remove redundant type name qualifiers.

C#

Update file header

Inserts or updates the file header comment that you can configure on the Code Editing | File Header Text page of ReSharper options (Alt+R, O) or using the file_header_template EditorConfig property. For more information, see File header style.

C/C++

Update file header

Inserts or updates the file header comment that you can configure on the Code Editing | File Header Text page of ReSharper options (Alt+R, O) or using the file_header_template EditorConfig property. For more information, see File header style.

C/C++

Apply Clang-tidy fix-its

In this node, you can choose all or specific fixes that will be applied according to the Clang-Tidy checks.

The selected fixes will be applied even if the corresponding inspections are turned off on the Code Inspection | Inspection Severity page of ReSharper options (Alt+R, O). Be careful when enabling too many checks at once — code cleanup runs Clang-Tidy only once for a given file, so if multiple fixes touch the same block of code, the changes might conflict with each other.