cbind.fill: Combine arbitrary data types, filling in missing rows.
In cvarrichio/rowr: Row-Based Functions for R Objects

Robust alternative to cbind that fills missing values and works on arbitrary data types. Combines any number of R objects into a single matrix, with each input corresponding to the greater of 1 or ncol. cbind has counterintuitive results when working with lists, cannot handle certain inputs of differing length, and does not allow the fill to be specified.

1	cbind.fill(..., fill = NULL)

`...`	any number of R data objects
`fill`	R object to fill empty rows in columns below the max size. If unspecified, repeats input rows in the same way as `cbind`. Passed to `buffer`.

cbind.fill(c(1,2,3),list(1,2,3),cbind(c(1,2,3)))
cbind.fill(rbind(1:2),rbind(3:4))
df<-data.frame(a=c(1,2,3),b=c(1,2,3))
cbind.fill(c(1,2,3),list(1,2,3),cbind(c('a','b')),'a',df)
cbind.fill(a=c(1,2,3),list(1,2,3),cbind(c('a','b')),'a',df,fill=NA)