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How to Avoid Go Vet Warnings When Printing Two Percent Signs in Println?

Barbara Streisand
Barbara StreisandOriginal
2024-12-06 01:34:09954browse

How to Avoid Go Vet Warnings When Printing Two Percent Signs in Println?

Dealing with Go Vet Warnings on % in Println

In Go, using fmt.Println("%") can trigger a vet warning: "Println call has possible formatting directive %d". This warning arises when attempting to print two percent signs (%%) instead of a formatting directive (e.g., %d).

To address this, there are alternative solutions that avoid the warning while still achieving the desired output of printing two percent signs:

  • Concatenation: Concatenate the two percent signs with another string before passing it to Println: fmt.Println(%% dude).
  • Hexadecimal Escaping: Escape one of the percent signs using hexadecimal encoding: fmt.Println(%x25dude).
  • Printf Format String: Use a format string with Printf to explicitly specify the percentage sign: fmt.Printf(%%%%duden).
  • Declare String: Declare a variable for the string containing the percent signs and then pass the variable to Println: s := %%dude; fmt.Println(s).

By utilizing these alternatives, you can effectively eliminate the vet warning while maintaining the intended output of printing two percent signs.

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