Filter Values

Keep only values that pass a condition.

filter_values.lua

local limit = 
local output = ""
local count = 0

for _, value in ipairs({2, 4, 6, 8}) do
  if value >= limit then
    count = count + 1
    if output ~= "" then
      output = output .. ","
    end
    output = output .. value
  end
end

print("limit=" .. limit)
print("count=" .. count)
print("output=" .. output)

local limit = 
local output = ""
local count = 0

for _, value in ipairs({2, 4, 6, 8}) do
  if value >= limit then
    count = count + 1
    if output ~= "" then
      output = output .. ","
    end
    output = output .. value
  end
end

print("limit=" .. limit)
print("count=" .. count)
print("output=" .. output)

local limit = 
local output = ""
local count = 0

for _, value in ipairs({2, 4, 6, 8}) do
  if value >= limit then
    count = count + 1
    if output ~= "" then
      output = output .. ","
    end
    output = output .. value
  end
end

print("limit=" .. limit)
print("count=" .. count)
print("output=" .. output)

filter values Filtering visits every element but only records the values that match the predicate.