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Why you should care

[/vc_column_text][vc_column_text]Dead code are instructions that can never be reached. Obvious dead code are instructions that follow unconditional jumps in the same statement block.

Dead code could just be deactivated functionalities, but in this case, it should not be present in production.[/vc_column_text][vc_empty_space][/vc_column_inner][/vc_row_inner][vc_empty_space height=”12px”][vc_empty_space][vc_separator][vc_column_text]

How we detect

[/vc_column_text][vc_column_text]CAST Highlight counts one occurrence each time a statement is detected after a jump statement (i.e. return, break, continue, and fallthrough) in the same current block.

Bad Code

func fun(a:Int)->Int{
var i = 10;
return i + a;
i++; // this is never executed
}

Good Code

func fun(a:Int)->Int{
  var i = 10;
  return i + a;
}

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References

[/vc_column_text][vc_column_text]http://cwe.mitre.org/data/definitions/561.html
https://rules.sonarsource.com/swift/RSPEC-1763[/vc_column_text][vc_empty_space][vc_row_inner][vc_column_inner][vc_single_image image=”5362″ img_size=”full”][vc_column_text]

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