moonscript

问题 I'm pretty new to using things like luarocks to install libraries, and I'm running into a problem I'm not sure how to fix when installing the dependencies for Lapis. As you can see, I have none of the dependencies installed for Lapis (I assume that they'll automatically install when I attempt to download Lapis). I'm using the regular command prompt for this. Being so new, I imagine I could be doing many things wrong. Should I be using something else? Any pointers would be great, thanks! 回答1:

问题 In Python we can use set or itertools to find the subset of one list of another list, how do we do the same in Lua ? a = {1,2,3} b = {2,3} How do i check that b is a subset of a ? 回答1: Sets can be implemented in Lua using tables as look-ups for membership testing (as done in Programming in Lua). The keys in the table are the elements of the set and the values are either true if the element belongs to the set or nil otherwise. a = {[1]=true, [2]=true, [3]=true} b = {[2]=true, [3]=true} -- Or