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I don't know about Go, but lint is commonly used to enforce checking of return values in C. Presumably Go could bake an option into the compiler to enforce this
by dmpk2k 14y ago
I don't know about Go, but lint is commonly used to enforce checking of return values in C. Presumably Go could bake an option into the compiler to enforce this too.
- luriel 14y agoIn Go unused variables are an error, so you are forced to either handle errors or explicitly ignore them (by assigning them to _).
- Djehngo 14y agoSort of, you can actually get away with invoking a function and not assigning its result at all I think assigning the error to _ is only necassary when you have multiple return values(one of which is the error) and you are interested in at least one of them. e.g. returnsTwoValues() is legal x := returnsTwoValues() is not maps are also interesting because value := someMap[key] is valid and value, keyIsPresent := someMap[key] is also valid.