Why does Go throw an 'no new variables on left side of :=' error when re-assigning values to an array?

Reassignment of Array: "no new variables on left side of :="

In the provided Go code snippet, an error is encountered when attempting to reassign values to the 'myArray' variable on the second line:

myArray := [...]int{12, 14, 26}
myArray := [...]int{11, 12, 14} // error: no new variables on left side of :=

This error stems from the use of := in the second assignment. When you declare a variable using := for the first time, such as in the first statement, it creates a new variable and assigns it a value. However, when you try to reassign a value to an existing variable using :=, it treats it as an attempt to declare a new variable, which is not allowed.

The solution is to remove the := from the second assignment line and instead use the standard assignment operator =:

myArray = [...]int{11, 12, 14}

The : syntax is specifically intended for the initial declaration and assignment of a variable. After the variable has been declared, reassignment should be done using the = operator.

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