I wanted a layout that suited my Linux & Vim usage. I also didn't like the lack of efficient access to some of the more common special characters used in programming.
MT(mod, kc)
keys (modifier when pressed, key when tapped). Those keys work with a global timeout. When a key press is shorter than the timeout, it's considered a tap, otherwise it's a hold. I couldn't find any particular timeout that would work for me. I need to use mods extremely fast, but also want the confort of using them more slowly in other occasions. So I gave up on this feature altogether.{}[]
. When programming, these are used extremely often. I was still getting used to the coder layer, and I prefer the arrows on the home row, so I used the bottom-right keys for this.Super-Space
combo, which in my systems (both Linux & Windows) is the shortcut to change the keyboard language. I'm Portuguese, so I often cycle between US layout for coding, and PT layout for writing.=
and -
signs where nowhere to be found. -
was already on the base layer, but it's still useful to have a fully-featured NumPad on the coder layer.