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mongo = require "mongo"

db = mongo.client { host = "localhost" }

local r = db:runCommand "listDatabases"

for k,v in ipairs(r.databases) do

print(v.name)

end

local loc = db:getDB "hello"

local c = loc.system.namespaces:find()

while c:hasNext() do

local r = c:next()

print(r.name)

end

print "==============="

db.hello.world:insert {}

local r = db:runCommand ("getLastError",1,"w",1)

print(r.ok)

local c = db.hello.world:find()

while c:hasNext() do

local r = c:next()

print(mongo.type(r._id))

end