Go: All your comparable types

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<h1 class="small"><a href="/blog/">The Go Blog</a></h1>


<h1>All your comparable types</h1>
  
  <p class="author">
  Robert Griesemer<br>
  17 February 2023
  </p>
  
  <p>On February 1 we released our latest Go version, 1.20,

which included a few language changes.
Here we’ll discuss one of those changes: the predeclared comparable type constraint
is now satisfied by all comparable types.
Surprisingly, before Go 1.20, some comparable types did not satisfy comparable!

If you’re confused, you’ve come to the right place. Consider the valid map declaration

var lookupTable map[any]string

where the map’s key type is any (which is a https://go.dev/blog/comparable