[R] Corrected : Efficient writing of calculation involving each element of 2 data frames

Hi I have 2 data.frames each of the same number of rows (approximately 3 or more entries). They also have the same number of columns, lets say 2. One column has the date, the other column has a double precision number. Let the column names be V1, V2. Now I want to calculate the correlation of

[R] efficient writing of calculation involving each element of 2 data frames.

Hi I have 2 data.frames each of the same number of rows (approximately 3 or more entries). They also have the same number of columns, lets say 2. One column has the date, the other column has a double precision number. Let the column names be V1, V2. Now I want to calculate the correlation of