popone-list-method: Remove and return an element from a list
In Xmisc: Xiaobei's miscellaneous classes and functions

Description Usage Arguments Value Author(s) Examples

Remove and return an element from an R object, given name or index. Default: the last element Note: the R object is altered in place, like Python List pop()

1 2	## S4 method for signature 'list' popone(obj, x, warn = TRUE, error = TRUE)

`obj`	an R object
`x`	name or index
`warn`	logical, whether warn at error
`error`	logical, whether stop at error

the element and the R object is altered in place

Xiaobei Zhao

ll <- list(1,2,3,a=4,b=5,6,7,c=8,9)
popone(ll,"a")
popone(ll,1) ## remove the 1st in ll
popone(ll,1) ## remove the next (2nd of the origin)
try(popone(list(),"a"))