TAPL-93 at 08:35, 1 February 2015

2015-02-01T08:35:29Z

← Older revision		Revision as of 08:35, 1 February 2015
Line 17:		Line 17:
	<syntaxhighlight lang="lua">		<syntaxhighlight lang="lua">
	function getKeyFromValueInTable(a, b)		function getKeyFromValueInTable(a, b)
	for k,v in ~~ipairs~~(a) do		for k,v in pairs(a) do
	if v == b then		if v == b then
	return k		return k

MrTasty at 11:20, 19 January 2014

2014-01-19T11:20:27Z

← Older revision		Revision as of 11:20, 19 January 2014
Line 26:		Line 26:
	</syntaxhighlight>		</syntaxhighlight>
	</section>		</section>
			Author: MrTasty

	==Example==		==Example==
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	end)		end)
	</syntaxhighlight>		</syntaxhighlight>


	~~Author: MrTasty~~

	==See Also==		==See Also==
	{{Useful_Functions}}		{{Useful_Functions}}

MrTasty: Created page with "{{Useful Function}} NOTOC This function can be used to find the key of a specified value in a specified table. ==Syntax== element/int/float/string getKeyFromVa..."

2014-01-19T11:12:44Z

Created page with "{{Useful Function}} __NOTOC__ This function can be used to find the key of a specified value in a specified table. ==Syntax== <syntaxhighlight lang="lua">element/int/float/string getKeyFromVa..."

New page

{{Useful Function}}
__NOTOC__
This function can be used to find the key of a specified value in a specified table.

==Syntax==
<syntaxhighlight lang="lua">element/int/float/string getKeyFromValueInTable(table theTable, mixed searchFor )</syntaxhighlight>

===Required Arguments===
* '''theTable''': The table where to look for the specified value.
* '''searchFor''': The string/number/element to find the key of.

===Returns===
Returns the key of the searched value, or ''false'' if not found.

==Code==
<section name="Function source" class="both" show="true">
<syntaxhighlight lang="lua">
function getKeyFromValueInTable(a, b)
for k,v in ipairs(a) do
if v == b then
return k
end
end
return false
end
</syntaxhighlight>
</section>

==Example==
This example output the cost of the item specified by the player who entered the command.

'''NOTE:''' This is not the most efficient way, as it won't allow you to have more than 1 item of the same cost.
<syntaxhighlight lang="lua">
shopItems = {
--[PRICE] = "ITEM NAME",
[10] = "Sprunk Soda",
[12] = "eCola",
[17] = "Pisswasser",
}

addCommandHandler("getcostof", function(player, command, item)
if item then
local cost = getKeyFromValueInTable(shopItems, item) --Find the key (the price in this case) of entered item name
if cost then
outputChatBox(item.." costs $"..cost, player, 255, 0, 0) --If the cost was found, output it to the command executor
else
outputChatBox(item.." is not available in our shop.", player, 255, 0, 0) --If it wasn't, tell the command executor that the item does not have a cost (ie: not in the shop)
end
else
outputChatBox("Syntax error. Valid syntax is: /"..command.." <item name>", player, 255, 0, 0) --Output valid syntax in case the executor did not specify the item name to search for
end
end)
</syntaxhighlight>

Author: MrTasty

==See Also==
{{Useful_Functions}}

GetKeyFromValueInTable - Revision history

TAPL-93 at 08:35, 1 February 2015

MrTasty at 11:20, 19 January 2014

MrTasty: Created page with "{{Useful Function}} __NOTOC__ This function can be used to find the key of a specified value in a specified table. ==Syntax== element/int/float/string getKeyFromVa..."

MrTasty: Created page with "{{Useful Function}} NOTOC This function can be used to find the key of a specified value in a specified table. ==Syntax== element/int/float/string getKeyFromVa..."