Module tch.tableprint
A convenience function to prettyprint a table.
Load the module via require; it returns the prettyprint function. Then simply call it with a table argument. It will also work with non-table arguments.
It uses the standard print function to output everything. If you want to use a different output function the simplest solution is to reassign the global print function to your logging function, then load this module and restore it afterwards.
By default the output function is invoked with one string argument
that contains newlines. This ensures a readable output with the
standard print function and the override used in the nginx Lua module.
If you use a different output function that doesn't cope well with
these newlines (syslog for example) then you can set the environment
variable TABLEPRINT\NO\NEWLINES. In that case the output function
is called for every line in the output.
Warning: the prettyprinter doesn't check for loops in a table!
Usage:
-- Use a custom print function, namely log(),
-- by temporarily changing the global print() function.
local _print = print
print = log
local tprint = require("tch.tableprint")
print = _print -- restore print()
local t = { some = "table", 4, 3 }
tprint(t)
tprint("some string") -- also works
tprint(43) -- also works
tprint(true) -- again, this works as well