Get Difference in days between two dates as a number

The following R script subtracts two dates and get the difference in days. The dates are in the String format. Thus, the R script has to use date format to convert the strings into dates.

Code:

diff=as.Date(strptime("2004-02-03", "%Y-%m-%d"))-as.Date(strptime("2006-02-03", "%Y-%m-%d"))
diffNum=as.numeric(diff)
print(diff);

 

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