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.
1 â /setblock x y z minecraft:command_block â â The setblock command changes a particular block into a command block using its location. 2  To determine the location of a block, press F3 on your keyboard and look at the block you wish to change. 3  The coordinates of the block being looked at will be displayed.