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What is the best way to filter out a nil value.

 
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AmyGrrl
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Joined: 15 Dec 2016
Posts: 29
PostPosted: Wed Sep 15, 2021 2:23 pm    Post subject: What is the best way to filter out a nil value. Reply with quote
This address I'm using to get a value from can sometimes give a nil value. I was trying to filter out the nil result. I wanted it to keep looping until it got a result that wasn't nil. But it still fails when doing the math.floor because it was trying to do math on a nil value.


Code:

while true do
  if tonumber(DirectionFloatValue.Value) ~= nil then
    ArrowMath = math.floor(tonumber(DirectionFloatValue.Value))
    break
  end
end
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Dark Byte
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PostPosted: Wed Sep 15, 2021 2:54 pm    Post subject: Re: What is the best way to filter out a nil value. Reply with quote
AmyGrrl wrote:
This address I'm using to get a value from can sometimes give a nil value. I was trying to filter out the nil result. I wanted it to keep looping until it got a result that wasn't nil. But it still fails when doing the math.floor because it was trying to do math on a nil value.


Code:

while true do
  if tonumber(DirectionFloatValue.Value) ~= nil then
    ArrowMath = math.floor(tonumber(DirectionFloatValue.Value))
    break
  end
end


perhaps the value becomes unreadable again right after one proper read

try

Code:
 
while true do
  local v=tonumber(DirectionFloatValue.Value)
  if v ~= nil then
    ArrowMath = v
    break
  end
end


or better use a timer instead of while loop
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AmyGrrl
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Joined: 15 Dec 2016
Posts: 29
PostPosted: Wed Sep 15, 2021 3:15 pm    Post subject: Reply with quote
Thanks. So I just needed to store the value and then check if it was nil. If the stored value isn't nil. Then do the math.floor on the stored value.
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