[SWIFT] About the error message Invalid redeclaration of'***'

Development environment

Swift5 Xcode12.2


Invalid redeclaration of '***' This section describes what to do when the error message "" appears.

About this error message

I will read this error message written in English. This time it's a relatively short sentence, invalid, redeclaration, of ~ (~) If you connect these, it means that there is an invalid redeclaration for the classes and methods under of. In other words There are two declarations about'***', so you need to combine them into one.

Source code

var abc = 0
var abc = 1 //error


var abc = 0

And so on, make one declaration. Check if the same variable and the same method are declared twice somewhere.

Referenced articles

Swift compilation error jumble

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