To help avoid mistakes Go compiler doesn’t allow unused variables.
However, there are some situations when you don’t need to use a value stored in a variable.
In those cases, you use a “blank identifier” _ to assign and discard the assigned value.
A blank identifier can be assigned a value of any type, and is most commonly used in functions that return multiple values.
https://codeeval.dev/gist/9d4e139f994501de5abdb484b72aa517
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