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Added caching to lume.lambda()

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rxi 2014-03-15 21:20:53 +00:00
parent c971cee753
commit be40cd6276
1 changed files with 9 additions and 4 deletions
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13
lume.lua
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@ -228,11 +228,16 @@ function lume.time(fn, ...)
end
local lambda_cache = {}
function lume.lambda(str)
local args, body = str:match([[^([%w,_ ]-)%->(.-)$]])
assert(args and body, "bad string lambda")
local s = "return function(" .. args .. ")\nreturn " .. body .. "\nend"
return lume.dostring(s)
if not lambda_cache[str] then
local args, body = str:match([[^([%w,_ ]-)%->(.-)$]])
assert(args and body, "bad string lambda")
local s = "return function(" .. args .. ")\nreturn " .. body .. "\nend"
lambda_cache[str] = lume.dostring(s)
end
return lambda_cache[str]
end