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.
How to enable command blocks on your Minecraft server. Command blocks are normally a requirement for adventure maps. So if your adventure map is not working double check you have enabled command blocks. 1. On the left hand side of your control panel click the Files dropdown box. 2. 3.