How many times can I write a sketch to an Arduino

Have durable is the flash memory on the Arduino.  Can I upload different code 100's or 1000's of times without it dying?  I am curious if it various from Actual Arduino to clones.   I am trying multiple programs and tend to write the blink code when done to prevent any odd code running when I am between trials.

 

Thanks

 

Shon

Datasheet and Reality

Thanks OddBot,

 

  I work with computers daily.  Datasheets tend to be best case.   I was curious as to the quality of the Arduino and what people have seen for actual writes.   I consider the flash memory to be similar to a Thumb Drive.  I have good ones I have been using for years.  I have had some that were cheaper and didn’t last 3 months.   

 

 

 

Shon