unionFindFn: Combine findFn Objects
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Description Usage Arguments Details Value Note Author(s) See Also Examples

Combines to findFn objects into a new findFn object with only one row for any help page duplicated between the two. unionFindFn removes duplicate entries. intersectFindFn keeps only the duplicates.

unionFindFn(e1, e2, sortby=NULL)
intersectFindFn(e1, e2, sortby=NULL)

## S3 method for class 'findFn'
Ops(e1,e2)
# This supports "|" for "unionFindFn"
# and "&" for "intersectFindFn".

`e1, e2`	objects of class `findFn`.
`sortby`	Optional `sortby` argument used by `sortFindFn` and `findFn`. Default is the `sortby` argument in `attr(e1, 'call')`.

1. e12 <- rbind(e1, e2)

2. For any (Package, Function) appearing in both e1 and e2, the row with the largest Score is retained and the other is deleted.

3. Apply sortFindFn to the rebuild the summary and sort the result as desired.

4. attr(e12, 'matches') <- c(attr(e1, 'matches'), attr(e2, 'matches'))

an object with class c('findFn', 'data.frame') as returned by sortFindFn and findFn.

Binary operators & and | are implemented for the S3 class findFn

Spencer Graves and Romain Francois

findFn sortFindFn

des1 <- findFn('differential equations', 1)
de1 <- findFn('differential equation', 1)
# each retrieves 1 page of 20 hits
# but not the same 20

de.s <- unionFindFn(des1, de1)
# combines the two, eliminating duplicates.

# or the sorter version:
de.s. <- des1 | de1

all.equal(de.s, de.s.)




# Keep only the common entries.
de2 <- intersectFindFn(des1, de1)
de2. <- des1 & de1

all.equal(de2, de2.)


# summary and print still work with the combined object.
summary(de.s)
if(!fda::CRAN()){
  de.s
}

summary(de2)
if(!fda::CRAN()){
  de2
}