String interpolation for Lua, inspired by f-strings, a form of string interpolation coming in Python 3.6.
This module started as a blog post showcasing that Lua already has all features necessary to implement the equivalent Python feature.
Require the F module and then use it directly on strings. Any {expression} occurring
in them will be evaluated and interpolated directly in the string.
local F = require("F")
local f = 99
local c = (f - 32) / 9 * 5
print(F"{f} degrees Fahrenheit is {c:%.2f} degrees Celsius")
Almost any Lua expression can be inserted (apart from two minor parsing caveats: ":%"
is used as a separator for specifying formatting (according to the same rules of
string.format), and curly braces within expressions must be well-nested).
See the examples directory for more examples.
Hisham Muhammad - http://twitter.com/hisham_hm - http://hisham.hm/
MIT/X11, the same as Lua.