[vc_row][vc_column][vc_btn title=”SOFTWARE RESILIENCY” style=”flat” color=”black” i_icon_fontawesome=”fa fa-shield” add_icon=”true” link=”url:http%3A%2F%2Fdoc.casthighlight.com%2Fsoftware-resiliency%2F|||”][vc_btn title=”CODE RELIABILITY” style=”outline” color=”black” i_icon_fontawesome=”fa fa-code” add_icon=”true” link=”url:http%3A%2F%2Fdoc.casthighlight.com%2Fcategory%2Fproduct%2Findicators-methodology%2Fcode-insights%2Fsoftware-resiliency%2Fcode-reliability%2F|||”][vc_empty_space height=”12px”][vc_row_inner][vc_column_inner][vc_column_text]

Why you should care

[/vc_column_text][vc_column_text]The use of Swift 2.0’s try! lets you execute code that might throw an exception without using the do and catch syntax normally required for such code. By using it, you’re guaranteeing that the executed code will never fail. But there might be some exceptions… And when it does fail, the program will exit abruptly, probably without cleaning up after itself.[/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 “try!” pattern is used.

Bad Code 

let myvar = try! dangerousCode(foo);  // Noncompliant
// ...

Good Code 

do {
  let myvar = try dangerousCode(foo);
  // ...
} catch {
  // handle error
}

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References

[/vc_column_text][vc_column_text]https://rules.sonarsource.com/swift/RSPEC-3661[/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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