Android Question Try/Catch Program Speed

daniedb

Active Member
Licensed User
Hi Guys (Mainly for Erel)

I have a Arduino sending a huge Serial string via Bluetooth to my Application. Sometime the string came though crappy, so I start implementing Try/Catch after I Parse the various Fields from the string.
So currently I'm parsing about 55 variables (so 55 try/catch) in my funtion.
Will this slowdown my Program, or any other negative effects
Thanks
Danie
 

Troberg

Well-Known Member
Licensed User
There will be a small slowdown, of course, but not the massive performance hits that you get in, for example C#. I also assume that the Catch (which is the most "expensive" bit) is only used on bad data, which hopefully occurs seldom.

That said, I usually make data validation without Try-Catch, instead relying on code that checks if it's a meaningful value. That allows me to handle errors in a more intelligent way, depending on what's wrong, and also allows me to catch errors which Try-Catch wouldn't. Say, for example, that we have an integer specifying weekday, with valid values 0-6. Try-Catch would Catch if you got an "M", but it wouldn't catch if someone sent you a 7.
 
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