Opcall - first resource

[TheH0meLands]

Yoo thats so cool can u send me a code sample of it?

[commitblue]

of xpcall or opcall?

[TheH0meLands]

Both pls sorry to disturb u i just want to learn it.

[commitblue]

Oh so if you want xpcall, read this

Pcall(), xpcall() and ypcall() Tutorial - How do they work?

Welcome curious Developers! In this tutorial, I’ll be explaining how pcall() and xpcall() functions work and what happened to ypcall(). Let’s start pcall() pcall() is short for P rotected Call , if the code inside of this function has an error it will yield until the attached function run without any issues and won’t stop the rest of the script. It also returns two values: A bool one and a variant one. local boolValue, variantValue = pcall(function() -- 1 -- this code is protected end) …

Read the xpcall section

[TheH0meLands]

Tysm so xpcall is like the .try and .catch in javascript. Nice

[commitblue]

Thank you for appreciating my resource!

[commitblue]

Oh yeah and for opcall read this code sample

@commitblue

local success,err = opcall(function()
--urfunctiontorun
end,
function(success,err)
--urfunctiontorunonsuccess
end,
function(success,err)
--urfunctiontorunonerror
end)

[FelixProfit]

function opcall(functiontorun, functiontorunonsuccess, functiontorunonerror)
	local result
	-- running function
	local success,err = pcall(function()
		result = functiontorun()
	end)
	
	if success then
		-- worked
		print("the result is:", result)
		functiontorunonsuccess(result)
	else
		-- failed
		functiontorunonerror(err)
	end
	return success,err
end

-- calling function
local succ, err = opcall(
	function()
		return 1 + 2 == 5
	end,
	function(result)
		print(result)
	end,
	function(err)
		print(err)
	end
)

Made it so you can return and get the result and also removed some code that isn’t needed

[commitblue]

cool, but ireally prefer removing print, thanks anyway

[Fifkee (Noire)]

looks nice! code is great as well. good job

[commitblue]

UPDATE

Removed an unnessecary part in the opcall.

also i noticed that the function will be underlined red but it will still work

proof

thanks

[ItzEthanPlayz_YT (RadiatedExodus)]

It seems like someone finally made this and released it to the public, I didn’t make a post about mine :v

https://gist.github.com/RealEthanPlayzDev/af4f14c56ac2548597ee6cfb2db855a9

[commitblue]

Ig nice code. I really could’ve used assert lol.

[commitblue]

Also, assert does huge memory consuming. I suggest you do the disgusting ifs.

[commitblue]

I made a version of this but with ternary.(the fake ternary)

function opcall(functiontorun,functionerr,function success)
local success,err = pcall(function()
functiontorun = functiontorun()
end
success == true and functionsuccess(success) or functionerr(err)
end

I really like one liners, but I didn’t test it yet so I don’t think it work

[ItzEthanPlayz_YT (RadiatedExodus)]

Can I get the source of this information? Never heard of assert being memory intensive.

[commitblue]

Here.

Be careful when using assert() and Why

The Problem with assert() If you use assert() a lot in your codebase, you will probably notice the script activity percentage mysteriously surge. The culprit is costly evaluation of string concatenation or string.format in the second argument for assert. assert is a regular function. Therefore, Lua always evaluates its arguments before calling the function. You can check the script activity percentage by enable the Script Performance view: [image] image c…

[ItzEthanPlayz_YT (RadiatedExodus)]

Guess I have a lot of work to do then.

[commitblue]

eh not really. just replace assert with if.

[Expertcoderz]

local function assert(value, errorMessage)
    return value or ​error​(errorMessage ​or​ ​"​assertion failed!​"​, ​2​)
end