What I'd like is being able to type in a big search textbox sth like: "java try catch syntax" and it would automatically (without me hitting enter) fetch the

What I'd like is being able to type in a big search textbox sth like: "java try catch syntax" and it would automatically (without me hitting enter) fetch the sample code and display it in a nice syntax-highlighted manner. It should also offer auto-completion like Google (eg. after I typed "java try"...). Or: "php class syntax" "svn ignore files" "diff show side by side" "c++ template function" etc. It'd be a lot of work but it seems doable and it'd be a killer destination site for programmers.