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Contents
## Introduction
_Too Many Instance Variables_ is a case of [Large Class](Large-Class.md).
## Example
Given this configuration
```yaml
TooManyInstanceVariables:
max_instance_variables: 3
```
and this code:
```Ruby
class Smelly
def initialize
@arg_1 = :dummy
@arg_2 = :dummy
@arg_3 = :dummy
@arg_4 = :dummy
end
end
```
Reek would emit the following warning:
```
test.rb -- 5 warnings:
[1]:TooManyInstanceVariables: Smelly has at least 4 instance variables
```
## Current Support in Reek
Reek only counts the instance variables you use explicitly like in the example above. Class macros like `attr_accessor` are disregarded.
## Configuration
Reek's _Too Many Instance Variables_ detector offers the [Basic Smell Options](Basic-Smell-Options.md), plus:
| Option | Value | Effect |
| -------------------------|---------|---------|
| `max_instance_variables` | integer | The maximum number of instance variables that are permitted. Defaults to 4 |
Version data entries
53 entries across 51 versions & 2 rubygems