来自数组或切片的多重分配

Is it possible in Go that unpack an array to multiple variables, like in Python.

For example

var arr [4]string = [4]string {"X", "Y", "Z", "W"}
x, y, z, w := arr

I found this is not supported in Go. Is there anything that I can do to avoid writing x,y,z,w=arr[0],arr[1],arr[2],arr[3]

More over, is it possible to support something like

var arr []string = [4]string {"X", "Y", "Z", "W"}
x, y, z, w := arr

Note it is now a slice instead of array, so compiler will implicitly check if len(arr)==4 and report error if not.

As you've correctly figured out, such constructs are not supported by Go. IMO, it's unlikely that they will ever be. Go designers prefer orthogonality for good reasons. For example, consider assignements:

• LHS types match RHS types (in the first approximation).
• The number of "homes" in LHS matches the number of "sources" (expression) in the RHS.

The Python way of not valuing such principles might be somewhat practical here and there. But the cognitive load while reading large code bases is lower when the language follows the simple, regular patterns.