dictS3binOp: Binary dict operators
Description
Binary operators for Dict objects.
Usage
# S3 method for Dict
+(d1, d2)# S3 method for Dict
-(d1, d2)
Details
d1 + d2: return a copy of d1 updated by d2.
d1 - d2: return a copy of d1 with all keys being
removed that occured in d2.