Standard Libraries

The following Lua 5.4 standard library modules and builtins are available in the HappyView sandbox.

string

• byte
• char
• find
• format
• gmatch
• gsub
• len
• lower
• match
• rep
• reverse
• sub
• upper

table

• concat
• insert
• remove
• sort
• unpack

math

• abs
• ceil
• floor
• max
• min
• random
• sqrt
• huge
• pi

os (safe subset)

Only the following safe functions are available from the os module:

• time
• date
• difftime
• clock

Dangerous functions like os.execute, os.remove, os.rename, and os.exit are not available.

Builtins

• print
• tostring
• tonumber
• type
• pairs
• ipairs
• next
• select
• unpack
• error
• pcall
• xpcall
• assert
• setmetatable
• getmetatable
• rawget
• rawset
• rawequal

Removed modules

The following standard Lua modules are removed and unavailable in the sandbox:

io, debug, package, require, dofile, loadfile, load, collectgarbage