ADoverload | R Documentation |

Enable extra RTMB convenience methods

```
ADoverload(x = c("[<-", "c", "diag<-"))
```

`x` |
Name of primitive to overload |

Work around limitations in R's method dispatch system by overloading some selected primitives, currently:

Inplace replacement, so you can do

`x[i] <- y`

when`x`

is numeric and`y`

is AD.Mixed combine, so you can do e.g.

`c(x, y)`

when`x`

numeric and`y`

is AD.Diagonal assignment, so you can do

`diag(x) <- y`

when`x`

is a numeric matrix and`y`

is AD.

In all cases, the result should be AD.
The methods are automatically **temporarily** attached to the search path (`search()`

) when entering MakeTape or MakeADFun.
Alternatively, methods can be overloaded locally inside functions using e.g. `"[<-" <- ADoverload("[<-")`

. This is only needed when using RTMB from a package.

Function representing the overload.

```
MakeTape(function(x) {print(search()); x}, numeric(0))
MakeTape(function(x) c(1,x), 1:3)
MakeTape(function(x) {y <- 1:3; y[2] <- x; y}, 1)
MakeTape(function(x) {y <- matrix(0,3,3); diag(y) <- x; y}, 1:3)
```

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