Knockout includes a function called ko.isObservable() . You can call it like ko.isObservable(vm[key]) . Update from comment: Here is a function to determine if something is a computed observable: UPDATE: If you are using KO 2.1+ - then you can use ko.isComputed directly.
Command Block. The Command Block is a redstone-powered block that was made available in the 1.4 update for Minecraft. The Command Block will perform server Commands when attached to a redstone circuit. This block cannot be crafted, and only server operators are allowed to place and use them.
This here be a vanilla mod pack for minecraft 1.8, using some command blocks that are both from my only one command block series, or brand new ones! This simple list of minecraft redstone commands all combined together makes a really fun vanilla mod pack to adventure around in! All command creations by Mr Garretto!