Hi Joshua,
On 06/17/2015 11:24 AM, Joshua Bradley wrote:
How would this new '+' deal with factors, as paste does or as the current
'+'
does? Would number+string and string+number cause errors (as in current
'+' in R and python) or coerce both to strings (as in current R:paste and
in perl's '+').
I had posted this sample code previously to demonstrate how string
concatenation could be implemented
"+" = function(x,y) {
if(is.character(x) & is.character(y)) {
return(paste0(x , y))
} else {
.Primitive("+")(x,y)
}}
so it would only happen if both objects were characters,
Problem with this is that it's inconsistent with other binary operators
that will first coerce the non-character operand to character if the
other operand is a character.
H.
otherwise you
should expect the same behavior as before with all other classes. This
would be backwards compatible as well since string+string was never
supported before and therefore no one would have previously working code
that could break.
Josh Bradley
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