How do you compare associative data types?

[person]

Hi,

Is there an STL function/algorithm to compare two maps and return a map
of the differences?

I'm looking for a way to do an "exclusive or" between an old map and a
new map and then work on the differences.

Thanks,
Frank

 

[Ben Pope]

Hi,

Is there an STL function/algorithm to compare two maps and return a map
of the differences?

I'm looking for a way to do an "exclusive or" between an old map and a
new map and then work on the differences.

set_symmetric_difference?

Ben Pope

 

[KK]

set_symmetric_difference?

Ben Pope

I did try set_difference (not the set_symmetric_difference tough) on
maps but did not work. I dont get any compiler errors, but the final
result was wrong. I wonder why!

 

[=?ISO-8859-1?Q?Erik_Wikstr=F6m?=]

I did try set_difference (not the set_symmetric_difference tough) on
maps but did not work. I dont get any compiler errors, but the final
result was wrong. I wonder why!

set_differance only returns A - B (elements in A but not in B) but does
not take into consideration elements that are unique to B.

Erik Wikström