For what it's worth:
John Nash (original author of the Pascal implementations of (most of)
the available algorithms in optim() (including the Nelder-Mead)) has
long maintained that these implementations could be updated. (Any update
that changed solutions, rather than adding new functionalit
Title says it all.
I know this can be done by transformations by the user, but given that
interval is so prominent in the ?doc and given that Nelder-Mead is the
default method for optim(), it would be nice if the default method would
honor this one, too.
[could be done (even by me) within the R c
Dear Yingkai,
The default method for 'initialize', which is called by 'new' in your example
and is accessible as
> selectMethod("initialize", "ANY")
has always called 'validObject' *only if* it finds arguments matching '...',
so the behaviour that you report is not a change from earlier beh
thanks. (indeed, on this one, even I knew this can be done, and only at
runtime, of course, for all generality. ;-)).
My suggestion was only for a little syntactic sugar. python has something
like it, too.
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В Wed, 10 Sep 2025 16:13:25 -0700
helgasoft пишет:
> Command compiler::cmpfile(infile) outputs a binary (.Rc) file.
> The infile source code is contained in this output file.
> Is the source code required, and if not, is it possible to make it
> optional ?
The source references are optional. Si
There's also base::declare() in R (>= 4.4.0), which people are
exploring to programmatically declare types and other things
(https://github.com/HenrikBengtsson/Wishlist-for-R/issues/169). For
example, Tomasz Kalinowski uses it in 'quickr' for guiding the "R to
Fortran Transpiler" (https://github.co
On 2025-09-17 1:23 p.m., IVO I WELCH wrote:
Suggestion for Syntax Sugar:
Would it make sense to permit a simple way to allow a coder to document the
function argument type?
f <- function( a:chr, b:data.frame, c:logi ) { … }
presumably, what comes behind the ‘:’ should match what ‘str’ return
Suggestion for Syntax Sugar:
Would it make sense to permit a simple way to allow a coder to document the
function argument type?
f <- function( a:chr, b:data.frame, c:logi ) { … }
presumably, what comes behind the ‘:’ should match what ‘str’ returns.
however, this need not be checked (except
