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 do you place many blocks at once in Minecraft? The two main methods of placing multiple blocks at the same time in  vanilla Minecraft are either:   Fill Command, type /fill x y z x2 y2 z2 block replacing x,y,z  wit â¦ h the start locations and x2,y2,z2 with the end location (making  a rectangle area).