Fix crash when using append_inplace without batteries:export().
If you don't export batteries into the global namespace to stomp table,
then append_inplace would access a nil function because it's using table
instead of tablex.
We still use table inside init, but that's after we export to global
namespace.
Fix shadowing by using variables with a different name or _.
I don't think any of these warnings were actual bugs and fixed them to
maintain the same behaviour.
Run luacheck on CI to catch subtle errors.
Add a luacheckrc that ensures current code issues no warnings. We should
eventually try to remove many of these ignores.
As a new user, there were things I was skeptical about and after digging
in, these were my conclusions.
Compared to the simple and obvious lua wiki solutions, batteries' string
functions are slightly faster. GC is the same.
Test
local str = "hello world"
local fn = function()
local x = 0
if stringx.ends_with(str, "h") then
x = x + 1
end
if stringx.ends_with(str, "helll") then
x = x + 1
end
if stringx.ends_with(str, "helicopter") then
x = x + 1
end
end
local pretty = require "inspect"
print("stringx =", pretty({
time_taken = {measure.time_taken(fn, 10000)},
memory_taken = {measure.memory_taken(fn, 10000)}
}))
local function starts_with(str, prefix)
return str:find(prefix, 1, true) == 1
end
local function ends_with(str, ending)
return ending == "" or str:sub(-#ending) == ending
end
local fn = function()
local x = 0
if ends_with(str, "h") then
x = x + 1
end
if ends_with(str, "helll") then
x = x + 1
end
if ends_with(str, "helicopter") then
x = x + 1
end
end
print("find =", pretty({
time_taken = {measure.time_taken(fn, 10000)},
memory_taken = {measure.memory_taken(fn, 10000)}
}))
starts_with
===========
stringx = {
memory_taken = { 0, 0, 0 },
time_taken = { 1.5098012518138e-007, 9.988434612751e-008, 2.1699932403862e-005 }
}
find = {
memory_taken = { 0, 0, 0 },
time_taken = { 2.7349997544661e-007, 1.9988510757685e-007, 9.1999536380172e-006 }
}
ends_with
=========
stringx = {
memory_taken = { 0, 0, 0 },
time_taken = { 9.0479978825897e-008, 0, 2.5199959054589e-005 }
}
find = {
memory_taken = { 0, 0, 0 },
time_taken = { 2.1833006758243e-007, 1.9988510757685e-007, 6.1000464484096e-006 }
}
- Now accepts a table from which it will pick the random value from,
instead of an index
- Changed function name to better reflect the way it now works
