I'm excited about sync.Pool:<p><a href="http://tip.golang.org/pkg/sync/#Pool" rel="nofollow">http://tip.golang.org/pkg/sync/#Pool</a><p>There are a lot of cases where people write their own version of this (myself included, but also the connections in database/sql for example). It will be great to have an implementation in the standard library. This technique has been very, very useful in StatHat's production code as we have grown.
I really wish they'd add string interpolation to Go. After being able to use s"My name is $name and surname is $surname" in Scala and "My name is #{name} and surname is #{surname}" in Ruby I find working with printf a giant step backwards.
The support for Native Client sounds interesting, but the distinction that it's not portable native client makes me wonder what you might use this for. What would one use the native client support for?<p>Could I use it to allow developers to make plugins for a product in Go and C++ in a secure way, instead of using say Lua?
I'm not asking for generics, but I really want an equivalent to Python's set data type for strings and numbers at the leas built-in. I'm aware of golang set on GitHub and the gen project as well, but I'm shocked that Go doesn't have an equivalent to the set data type yet.<p>I'm open to suggestions.
Here's the Go 1.3 Release Notes:<p><a href="http://tip.golang.org/doc/go1.3" rel="nofollow">http://tip.golang.org/doc/go1.3</a>