How do I get intellisense to pop up?

How do I get intellisense to pop up while I am coding?

I know it pops up when I start typing a known type, e.g., if I type NSS it will fi开发者_JS百科nish it for me NSString. How do I get it to give me a bunch of options like in Visual Studio, e.g., if I type NS I want to see what my options are like NSString, NSInteger, etc?

And if I have not typed anything, I still want a bunch of options like all the instance variables, etc.

Press the escape key.

Besides the escape key, you might want to look at the Xcode preferences, there is a "Code Sense" tab with some configuration options.