search for: precedance

The documentation (help("Syntax")) gives the operator precedence of the assignment operators and help, from highest to lowest, as: ?<- <<-? assignment (right to left) ?=? assignment (right to left) ??? help (unary and binary) If I understand correctly this implies that `a = b ? c` and `a <- b ? c` should parse

Forwarded, because I don''t think he''s subscribed and I''m not getting an email notification in my Yahoo account. Dan -----Original Message----- From: CT [mailto:demerzel@gmail.com] Sent: Friday, February 04, 2005 4:17 PM To: Berger, Daniel Cc: win32utils-devel@rubyforge.org Subject: Re: Bug fix On Fri, 4 Feb 2005 16:53:17 -0600, Berger, Daniel

Precedence is a property of the parser and has nothing to do with the semantics assigned to various symbols. Using just core R functions you can see the precedence of '?' is between those of '=' and '<-'. > # '=' has lower precedence than '?' > str(as.list(parse(text="a ? b = c")[[1]])) List of 3 $ : symbol = $ : language `?`(a, b) $

Dear all, `?Syntax` documents that `?` has the lowest precedence, right under `=`. Indeed it reads: *The following unary and binary operators are defined. They are listed in precedence groups, from highest to lowest. * and ends the list with *<- <<-* *assignment (right to left)* *=* *assignment (right to left)* *?* *help (unary and binary)* I believe it to be wrong, `=` has lower

...and 14955, which seems to have the explanation (but was marked as closed/fixed??). The parser does list '?' as lower precedence than '=', but '='-assignments are not normal 'expr's which can appear as arguments to '?'. (Presumably because of named arguments: f(a=b) differs from f(a<-b).) Other tokens which have lower precedence than assignments are

Using CentOS 6.9 with IPv4 configured, and _not_ disabling IPv6 yet, we want this NFS client system to prefer the IPv4 address of a dual-stack remote NFS server, which has both A and AAAA records in DNS. Otherwise we get a minutes long pause while automounter tries to mount the IPv6 address -- I can see automounter's '/bin/mount' running, using the AAAA record of the server, until

I am trying to set up a function which processes my data according to the following rules: 1. if (x[i]==0) NA 2. if (x[i]>0) log(x[i]/(number of consecutive zeros immediately preceding it +1)) The data this will apply to include a variety of whole numbers not limited to 1 & 0, a number of which may appear consecutively and not separated by zeros. Below is an example with a detailed

hello all, im trying to figure out the precedence of security parameters in smb.conf. i know that settings in specific shares take precedence over settings in global; 'invalid users' takes precidence over all other security settings. but others im not so clear on, such as: does 'read only' take precedence over 'write list'? or do later entries simply overwrite earlier

See also: https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16710 On Fri, Aug 30, 2019 at 9:02 AM William Dunlap via R-devel <r-devel at r-project.org> wrote: > > Precedence is a property of the parser and has nothing to do with the > semantics assigned to various symbols. Using just core R functions you can > see the precedence of '?' is between those of '='

Hello, I'm using pigeonhole-0.2.3, it works fine. I tried to verify some build in checks of vacation concerning precedence or auto-submitted header lines. It looks like sieve-test ignores header lines like Auto-Submitted: auto-submitted Precedence: bulk Return-Path: MAILER-DAEMON at ... if I have a vacation script like require ["vacation", "regex",

I agree there is no reason they _need_ to be the same precedence, but I think SPECIALS are already have the proper precedence for both unary and binary calls. Namely higher than all the binary operators (except for `:`), but lower than the other unary operators. Even if we gave unary specials their own precedence I think it would end up in the same place. `%l%` <- function(x) tail(x, n =

The unquoting discussion is IMHO separate from this proposal and as you noted probably better served by a native operator with different precedence. I think the main benefit to providing user defined prefix operators is it allows package authors to experiment with operator ideas and gauge community interest. The current situation means any novel unary semantics either need to co-opt existing

I''m not sure whether this is a bug or whether I''m simply expecting Ferret queries to work in a way other than they''re intended. I notice that if use a query like: (other_text:"Collaborative tools") AND NOT other_text:podcasts I''ll get correct search results. However, if I put parentheses around the second part, like:

Just a reminder that this remains an issue up to and including the latest syslinux 3.53-pre (0x473cfc9c). Additional testing suggests that implicit hostname/IP has never worked, ever since the common prefix suppression feature was added in version 3.00. -------- Original Message -------- Subject: pxelinux doesn't suppress common prefix if nothing precedes double colon Date: Sat, 25 Aug

Hello, Consider the following; You have a number of sites, all controlled by puppet. You have identified which files that are common to every host, and then which files are common to any particular site. Finally, you have the files which are private to the node in question. What I was wondering was if it would be possible to have some sort of directory hierarchy which has some kind of

Gabe, The unary functions have the same precedence as normal SPECIALS (although the new unary forms take precedence over binary SPECIALS). So they are lower precedence than unary + and -. Yes, both of your examples are valid with this patch, here are the results and quoted forms to see the precedence. `%chr%` <- function(x) as.character(x) `%identical%` <- function(x, y)

>After off list discussions with Jonathan Carrol and with >Michael Lawrence I think it's doable, unambiguous, >and even imo pretty intuitive for an "unquote" operator. For those of us who are not CS/Lisp mavens, what is an "unquote" operator? Can you expression quoting and unquoting in R syntax and show a few examples where is is useful, intuitive, and fits in to

"Equivalence" certainly does not mean that literally replacing some text will not change the result. >From "R language definition", p. 11: > Except for the syntax, there is no difference between applying an operator and calling a function. In fact, x + y can equivalently be written ?+?(x, y). Notice that since ?+? is a nonstandard function name, it needs to be quoted.

Index: docs/tutorial/LangImpl6.html =================================================================== --- docs/tutorial/LangImpl6.html (revision 105365) +++ docs/tutorial/LangImpl6.html (working copy) @@ -531,7 +531,7 @@ def unary-(v) 0-v; -# Define &gt; with the same precedence as &gt;. +# Define &gt; with the same precedence as &lt;. def binary&gt; 10 (LHS RHS)

Hadley asked about the Blue book; my shelf still has the earlier brown book Becker and Chambers, 1984, S: An interactive environment for data analysis and graphics. The manual page for precedence is $ component select %x special operator - unary minus : sequence operator ^ ** exponentiation * / mult/div + -