sorcery  Diff

Differences From Artifact [d54be79f29]:

• File lib/tbl.lua — part of check-in [9b8118877e] at 2021-06-24 07:15:50 on branch trunk — add basic keg impl (user: lexi, size: 3759) [annotate] [blame] [check-ins using]

To Artifact [990a6e8caf]:

• File lib/tbl.lua — part of check-in [01f4ba8ddc] at 2021-06-28 15:38:59 on branch trunk — more work on kegs and liquid, add taps and troughs for tapping trees and obtaining sap, add tree lore, add infuser module system, various tweaks, fix up bugged itemclass logic, add scaffold for crafting extension mechanism (user: lexi, size: 4196) [annotate] [blame] [check-ins using]

   206    206   end
   207    207   
   208    208   fn.cond = function(exp, c)
   209    209   	for i, v in ipairs(c) do
   210    210   		if c[1](exp) then return c[2](exp) end
   211    211   	end
   212    212   end
          213  +
          214  +fn.select = function(tbl, prop, ...)
          215  +	local keycache
          216  +	local check if type(prop) == 'function' then
          217  +		check = prop
          218  +		keycache = ...
          219  +	else
          220  +		local val val, keycache = ...
          221  +		check = function(ent) return ent[prop] == val end
          222  +	end
          223  +	for k,v in pairs(tbl) do
          224  +		if (not keycache) or (not keycache[k]) then -- help avoid expensive selectors
          225  +			if check(v,k) then
          226  +				if keycache then keycache[k] = true end
          227  +				return v, k
          228  +			end
          229  +		end
          230  +	end
          231  +end
   213    232   
   214    233   return fn