similar to: Parallel assignments and goto

Interestingly, the <<- operator is also a lot faster than using a namespace explicitly, and only slightly slower than using <- with local variables, see below. But, surely, both must at some point insert values in a given environment ? either the local one, for <-, or an enclosing one, for <<- ? so I guess I am asking if there is a more low-level assignment operation I can get my

Following up on this attempt of implementing the tail-recursion optimisation ? now that I?ve finally had the chance to look at it again ? I find that non-local return implemented with callCC doesn?t actually incur much overhead once I do it more sensibly. I haven?t found a good way to handle parallel assignments that isn?t vastly slower than simply introducing extra variables, so I am going with

No clue, but see ?assign perhaps if you have not done so already. -- Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Feb 27, 2018 at 6:51 AM, Thomas Mailund <thomas.mailund at gmail.com> wrote: > Interestingly, the

> On Feb 11, 2018, at 7:48 AM, Thomas Mailund <thomas.mailund at gmail.com> wrote: > > Hi guys, > > I am working on some code for automatically translating recursive functions into looping functions to implemented tail-recursion optimisations. See https://github.com/mailund/tailr > > As a toy-example, consider the factorial function > > factorial <-

Dear Thomas, This looks like a really interesting project, and I don't think that anyone responded to your message, though I may be mistaken. I took at a look at implementing parallel assignment, and came up with: passign <- function(..., envir=parent.frame()){ exprs <- list(...) vars <- names(exprs) exprs <- lapply(exprs, FUN=eval, envir=envir) for (i in

Would anyone like to explain if callCC in R 2.7.0 gives anything that on.exit does not already provide? It seems that the exit condition once defined cannot be added to overridden whereas with on.exit multiple on.exit's add additional on.exits rather than being ignored. Is this important?

Hello Thomas, Ulrik, thanks for your suggestions. Giovanni On Fri, Aug 4, 2017 at 12:13 PM, Thomas Mailund <thomas.mailund at gmail.com> wrote: > Do you mean like this? > > >> f <- function(foo, bar) { > + result <- list(bar) > + names(result) <- foo > + result > + } > >> (x <- f("hello", "world")) > $hello >

Hello, I'm having troubles defining a list where names are variables (of type character). Like this, which gives "foo" instead of "world" (the way I meant it is that "world" is the value of the variable foo). Any hint? > f <- function(foo, bar) { list(foo = bar) } > x <- f("hello", "world") > names(x) [1] "foo"

Do you mean like this? > f <- function(foo, bar) { + result <- list(bar) + names(result) <- foo + result + } > (x <- f("hello", "world")) $hello [1] "world" > names(x) [1] "hello" -- Thomas Mailund On 4 August 2017 at 12.08.28, Giovanni Gherdovich (g.gherdovich at gmail.com) wrote: Hello, I'm having troubles defining

https://bugzilla.samba.org/show_bug.cgi?id=11588 Bug ID: 11588 Summary: missing option: preallocate for all files except for sparse Product: rsync Version: 3.1.2 Hardware: x64 OS: Linux Status: NEW Severity: enhancement Priority: P5 Component: core

I appear to have written code which travels backwards through time: http://www.vimeo.com/742590 This disturbs me immensely. If anyone can explain it, that would be cool. I think it''s an illusion brought about by how RSpec wraps the code it executes, and by the sheer weirdness of continuations. -- Giles Bowkett Blog: http://gilesbowkett.blogspot.com Portfolio:

Dear R-programmers, I am trying to program a Newton-Raphson in R (yes, i will try GSL, not right now), and it would be a real boon if R had tail call elimination, so that a recursive program has a guarantee not to fail due to stack overflows, given how slow loops in R are. I did look at the documentation, but could not find a reason for it. Regards, Mohit Dayal Researcher Applied Statistics

Dear list Can anyone suggest a simple way to abort execution like stop(...) does, but without issuing an "Error: ..." message? I don't want to set 'options( show.error.messages=TRUE)' because I want normal behaviour to resume after this particular stop. (Please reply personally as well as to the list, as I'm not subscribed to R-help) Thanks Mark -- Mark Bravington

Kevin Streit wrote: > Hi, > > I'm still using the release_26 version of Poolalloc/DSA with llvm 2.6 for my analyses and am currently trying to switch to llvm 2.7 for several reasons. I tried to use the trunk of the poolalloc svn repository with the llvm 2.7 release which is working fine for most of the programs I ran it on so far but for sqlite it's running into a stack overflow

Hi, I'm still using the release_26 version of Poolalloc/DSA with llvm 2.6 for my analyses and am currently trying to switch to llvm 2.7 for several reasons. I tried to use the trunk of the poolalloc svn repository with the llvm 2.7 release which is working fine for most of the programs I ran it on so far but for sqlite it's running into a stack overflow since it is endlessly looping in

I have tried quit(), and return() but first exits from whole graphical interface and second is only for functions. What I need only to exit from current script and return to the console. -- View this message in context: http://r.789695.n4.nabble.com/beginner-simple-keyword-to-exit-script-tp3052417p3052417.html Sent from the R help mailing list archive at Nabble.com.

Hey all, I am writing a plugin in which I want to stop the rendering of an action with an unauthorized response if the user is not authorized to view the resource. I am using a before filter to achieve this and inside that before filter I do it like so: render :text => "Unauthorized!", :status => :unauthorized, :layout => false The status is properly set since I see the

I have been plotting the same charts using png on a Windows machine and on a Mac OSX and the quality of the resulting images, particularly in relation to the fonts, look far superior in the plots produced on the Mac. Is there any way I can enhance the quality of the plots produced on the Windows machine? I have also tried using win.metafile on the Windows machine and the quality looks the same as

I have a telco providing DTMF inband, they say they can't provide it any other way. This is creating headaches for me. What is the common method for SIP DTMF? Kpml, or 2833 or inband? My handsets don't support inband so I'm tying up some expensive resources to convert the inband DTMF to out-of-band DTMF... Can you recommend a vendor in US that provides SIP with DTMF in RFC

Hi List, I''m a new rubyist and railist, and my web-dev background is php, where I used and contributed to the WACT framework. Continuations are dead cool aren''t they. As I understand it, the problem with having them in rails is that marshalling them isn''t feasbile, so in a stateless environment, they can''t be easily implemented. (Is this correct?) My idea