Re: [Rd] How do I reliably and efficiently hash a function?

In addition to what Charles wrote, you can also use 'local' if you don't want a function that creates another function. > f <- local({info <- 10; function(x) x + info}) > f(3) [1] 13 best, Mark Op vr 11 dec. 2015 om 03:27 schreef Charles C. Berry : > On Thu, 10 Dec 2015,

Re: [Rd] How do I reliably and efficiently hash a function?

On Fri, Dec 11, 2015 at 12:49 AM, Konrad Rudolph wrote: > > On the chance that I’m trying to solve the wrong Y to an X/Y problem, > the full context to the above problem is explained in [1]. In a > nutshell, I am hooking a new environment into a function’s

Re: [Rd] How do I reliably and efficiently hash a function?

@Jeroen, here’s what I’m solving with my hacking the parent environment chain: I’m essentially re-implementing `base::attach` — except that I’m attaching objects *locally* in the function instead of globally. I don’t think this can be done in any way except by modifying the parent environment

Re: [Rd] How do I reliably and efficiently hash a function?

Thanks. I know about `local` (and functions within functions). In fact, the functions are *already* defined inside their own environment (same as what `local` does). But unfortunately this doesn’t solve my problem, since the functions’ parent environment gets changed during the function’s

Re: [Rd] How do I reliably and efficiently hash a function?

On Fri, Dec 11, 2015 at 1:26 PM, Hadley Wickham wrote: > Why not use your own S3 class? Yes, I’ll probably do that. Thanks. I honestly don’t know why I hadn’t thought of that before, since I’m doing the exact same thing in another context [1]. [1]:

Re: [Rd] How do I reliably and efficiently hash a function?

On Thu, Dec 10, 2015 at 5:49 PM, Konrad Rudolph wrote: > I’ve got the following scenario: I need to store information about an > R function, and retrieve it at a later point. In other programming > languages I’d implement this using a dictionary with the

Re: [Rd] How do I reliably and efficiently hash a function?

On Thu, 10 Dec 2015, Konrad Rudolph wrote: I’ve got the following scenario: I need to store information about an R function, and retrieve it at a later point. In other programming languages I’d implement this using a dictionary with the functions as keys. In R, I’d usually use `attr(f,