Re: Module Documentation

On Tue, Mar 2, 2021 at 11:13 AM Tom Browder wrote: > On Tue, Mar 2, 2021 at 08:42 Daniel Sockwell > wrote: > >> Richard Hainsworth wrote: >> > My suggestion is that some formal decision is made about documentation >> for Raku modules, that some >> > documentation good practices are put

Re: for and ^ question

On Wed, Dec 30, 2020 at 8:40 PM ToddAndMargo via perl6-users wrote: > In the following for loop: > > for ^$nCount -> $i { > > What is the ^ doing? https://docs.raku.org/type/Range About the third paragraph from the top: The caret is also a prefix operator for constructing numeric ranges

Re: Need help understand "class"

On Tue, Dec 8, 2020 at 7:05 PM ToddAndMargo via perl6-users wrote: > I guess what I am missing is how > > int cupsEnumDests(unsigned flags, int msec, int *cancel, cups_ptype_t > type, cups_ptype_t mask, cups_dest_cb_t cb, void *user_data); > > matches up with > > class CupsDest is

Re: list of printers

On Fri, Dec 4, 2020 at 10:52 PM ToddAndMargo via perl6-users wrote: > This is the C way, although it shows deleted printers as well: > > #include > #include > > int main() { > cups_dest_t* dests; > int nCount = cupsGetDests2(CUPS_HTTP_DEFAULT, ); > > for (int i = 0; i < nCount; i++) { >

Re: \n and array question

On Sat, Nov 14, 2020 at 2:03 PM ToddAndMargo via perl6-users wrote: > Just out of curiosity, why is the \n printed out literally here? > p6 'my @x = <"aaa\n","bbb\n","ccc\n">; for @x {print @_};' Your 'word quoting' <> is sort of like single quotes -- it keeps the literal stuff. You could use

Re: ps?

On Fri, Nov 13, 2020 at 9:03 PM ToddAndMargo via perl6-users wrote: > Fedora 33 > > I know I can get this information from a system > call to "ps", but is there a way to tell if a > program in running from Raku? Running ps is probably as good as anything, but in linux you could always just poke

Re: print particular lines question

$ cat Lines.txt | raku -e '.say for lines()[3,2,5]' On Mon, Aug 24, 2020 at 11:08 PM ToddAndMargo via perl6-users wrote: > > On 2020-08-24 19:35, ToddAndMargo via perl6-users wrote: > > Hi All, > > > > I seems I should know how to do this, but > > I am drawing a blank. > > > > $ cat Lines.txt |

Re: Raku-LibCurl:ver<1.0> install error on older MacOS?

Sorry things broke for you. I filed an issue on GitHub (https://github.com/CurtTilmes/raku-libcurl/issues/16) and copied the emails there. I published a new version 1.1 that will hopefully fix this. Please let me know (either in that issue, or file new issues) for anything broken. Curt On

Re: Help converting CArray[uint8] to Blob

On Tue, Jun 16, 2020 at 5:18 PM David Santiago wrote: > my uint8 @data = $ed.data[0..$ed.data_size-1].Array; > my Blob $bindata = Blob[uint8].new(@data); Not absolutely sure, but it seems like you are copying the data twice. Try just my $bindata = Blob.new($ed.data[^$ed.data_size]);

Re: NativeCall questions

On Fri, May 8, 2020 at 8:49 AM David Santiago wrote: > EncodedData* ed = malloc(sizeof(EncodedData)); > ed->data = encbuffer; > ed->crc32 = crc32; > return ed; You're returning a pointer to encbuffer -- make sure the storage for that is kept around somewhere. If it is passed in from Raku,

Re: NativeCall questions

On Fri, May 8, 2020 at 6:44 AM David Santiago wrote: > > I'm porting some personal perl5 scripts to Raku, and one of those > scripts is using Inline::C. > [...] > Why? How do i fix it? I haven't tried all of this, but the first thing that leaps out is that repr('CStruct') is not a struct -- it

Re: range doc page

I blame the English language for some of this. The docs and error messages are actually quite precise and correct as far as they go. The problem comes in my head, when I see the words "Blah type object", I think "an object of type Blah", which I think is a reasonable decoding given the way

Re: definition confusion of + and +^

On Sat, Jan 18, 2020, 3:39 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > > 4) infix:<+> means you can call it as a sub that > gives you back the wrong answer. > > $c = +($a, $b) > $c = +^($a, $b) > You left off the infix:<> part of the sub's name.

Re: Fwd: Raku, docs, help [was: Re: vulgar?]

On Mon, Dec 9, 2019 at 10:29 AM Simon Proctor wrote: > I think this does highlight something we probably should document more. > > How to read signatures. Because it's a *very* powerful part of the > language that if you don't understand you're only using it at half strength. > > multi method

Re: A grand idea on the documentation

On Mon, Dec 9, 2019 at 10:08 AM Simon Proctor wrote: > I find both the implications of "guard dog" and "gatekeeper" unfair ways > to talk about anyone on the community especially JJ. > I understand that the intent was derogatory, but I would encourage JJ to take it as a compliment. He is a

Re: Fwd: Raku, docs, help [was: Re: vulgar?]

On Mon, Dec 9, 2019 at 10:07 AM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > On 2019-12-09 02:00, JJ Merelo wrote: > > Other than that, it's clear from the context that it returns a Boolean > You still need to change the target audience of the docs > from the Developers to the

Re: Typed Arrays and for-loops

On Wed, Feb 13, 2019 at 7:30 AM Mikkel wrote: > > > for $files -> Str $f {.say} > Type check failed in binding to parameter '$f'; expected Str but got > Array[Str] (Array[Str].new("Test", "Test 2")) > in block at line 1 > Try either 'for @$files' or ' for $files.list'.

Re: print hex?

On Thu, Feb 7, 2019 at 2:14 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > What is the easiest way to get both print and say to print $i below in Hex? > > $ p6 'my Buf $x=Buf.new(0xAE,0x5D); my int16 $i=0x5DAE; say $x; say $i;' > > Buf:0x > 23982 say $i.base(16)

Re: binary test and position?

If you have glibc (probably yes for Linux or Mac, probably no for Windows), you can call memmem(): use NativeCall; sub memmem(Blob $haystack, size_t $haystacklen, Blob $needle, size_t $needlelen --> Pointer) is native {} sub buf-index(Blob $buffer, Blob $needle) {

Re: Malformed UTF-8 ???

On Mon, Oct 15, 2018 at 9:44 PM Brandon Allbery wrote: > Isn't the point that it's $ReturnStr that's throwing the immutable error, > not $RunString? That's what I see in the thread history > You're right. My thinko. Sorry. > On Mon, Oct 15, 2018 at 9:40 PM Curt T

Re: Malformed UTF-8 ???

On Mon, Oct 15, 2018 at 9:34 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > On 10/15/18 9:04 AM, Larry Wall wrote: > > This almost certainly means that $ReturnStr is a read-only paramater to > > a routine. Add "is copy" to the declaration if you want to modify it. > > I am not

Re: need --> help

On Fri, Oct 12, 2018 at 6:23 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > Is there any way to say I am return two things: a string and an integer? > You can only return one thing, but that one thing can be a List that has a string and an integer in it.

Re: need --> help

On Fri, Oct 12, 2018 at 5:08 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > >> On 10/12/18 12:52 PM, Curt Tilmes wrote: > >> > You could make a subset for the List your're trying to return: > >> > > >> >

Re: need --> help

On Fri, Oct 12, 2018 at 3:32 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > > But this does not? > > $ p6 'sub RtnOrd( Str $Char --> Str, Int ){return $Char, > ord($Char)}; say RtnOrd "A";' > > ===SORRY!=== Error while compiling -e > Malformed return value (return

Re: routine declaration line question

On Fri, Oct 12, 2018 at 8:46 AM Simon Proctor wrote: > What if something could return an Int or a Rat? Or an single item or an > Array? Having Mu or Any as the listed return type isn't very useful. > > Maybe better to define a subset for it. Or just leave it empty and > document it. > For an

Re: routine declaration line question

On Fri, Oct 12, 2018 at 7:46 AM Simon Proctor wrote: > Only if the routine has an easily defined return Type. Many do not. > Is there not always a common root, even if it is Mu? Why not explicitly mark those as Mu for documentation purposes at least? That would differentiate those from the

Re: routine declaration line question

On Fri, Oct 12, 2018 at 7:31 AM Todd Chester via perl6-users < perl6-us...@perl.org> wrote: > I was asking because sometimes the documentation for routines does > not give a --> and I find having to dig around to figure out what > the return is to be time consuming and confusing. > > Based on

Re: routine declaration line question

On Fri, Oct 12, 2018 at 6:08 AM Todd Chester via perl6-users < perl6-us...@perl.org> wrote: > > If nothing is being returned, it should really be indicated with --> Nil > > since that can enable certain optimizations. Similarly, if a routine > always > > returns true upon success, that can be

Re: eof ?

On Tue, Oct 9, 2018 at 9:27 AM Laurent Rosenfeld via perl6-users < perl6-us...@perl.org> wrote: > This: > my $f = $fh.lines; > will slurp all the lines into $f (but you can still access the individual > items with something like $f[4]). > Is that true? I supposed that it would hold the Seq as a

Re: How do I Stringy a Buf?

On Tue, Oct 9, 2018 at 9:21 AM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > > Yes, I know there are other ways to read a file. I > have a specific reason for using `read`. > > How do I properly turn a Buf into a Str (all the bytes will > have been tested to make sure they are

Re: eof ?

On Tue, Oct 9, 2018 at 8:49 AM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > > I am not getting anywhere with `.lines`. Read the whole thing in the > first line. > > $ p6 'my $fh=open "/home/linuxutil/WhoIsMySub.pl6", :r; while my $f = > $fh.lines { say "$f\n"}; $fh.close;' >

Re: loop on a Buf/binary

On Mon, Oct 8, 2018 at 7:53 AM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > I take it that `Buf` is a special type of array that the normal > rules do not apply to. > I would say rather than each of them (Buf and Array) are special types of Positional -- they 'do' the Positional

Re: loop on a Buf/binary

On Mon, Oct 8, 2018 at 7:06 AM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > $ p6 'my $fh=open "/home/linuxutil/To", :r; my Buf $f = $fh.read( 10 ); > $fh.close; dd $f; for $f[0..*] -> $Byte { if $Byte == 0b00 {say > "Binary"; last;}else{say $Byte}}' > > Buf[uint8] $f =

Re: slurp so many?

On Sun, Oct 7, 2018 at 7:42 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > I use `slurp` all the time, so of course, I can't > make heads or tails out of > > https://docs.perl6.org/routine/slurp > > I want to slurp the first 400 characters of > a file and close the handle.

Re: need doc help with []

On Tue, Oct 2, 2018 at 9:04 PM ToddAndMargo wrote: > Not to put the cart before the horse, having not read those > references yet, but did the crypto line forget the --> return? > https://docs.perl6.org/type/Signature#Constraining_return_types

Re: Could this be any more obscure?

On Tue, Oct 2, 2018 at 8:46 PM ToddAndMargo wrote: > On 10/2/18 5:31 PM, Curt Tilmes wrote: > > > > On Tue, Oct 2, 2018 at 8:28 PM ToddAndMargo > <mailto:toddandma...@zoho.com>> wrote: > > > > Question: in Perl syntaxland, is "postfix" sh

Re: Could this be any more obscure?

On Tue, Oct 2, 2018 at 8:28 PM ToddAndMargo wrote: > Question: in Perl syntaxland, is "postfix" short > for "postcircumfix"? > Nope. Each are different types of oeprator. Here is the list: https://docs.perl6.org/language/operators#Operator_classification

Re: need doc help with []

Remember within the few days people sent you links to read more about signatures? Go read them, then re-ask any remaining questions. I can cut/paste bits from them them under each of your questions, but it would really be better for you to just read the existing docs and try to understand

Re: Could this be any more obscure?

On Fri, Sep 28, 2018 at 7:23 PM ToddAndMargo wrote: > How about just: > > When used as an argument, the value Inf (Infinity) > represents "without bound" or "no limit". > > That would have certainly tipped me off > I think you are trying to tie its meaning as an argument to the

Re: Could this be any more obscure?

On Fri, Sep 28, 2018 at 6:49 PM ToddAndMargo wrote: > On 9/28/18 3:45 PM, ToddAndMargo wrote: > > > > The value Inf (Infinity) represents "without bound" or > > "no limit" (meaning "all possible values") when used > > as an argument. > > > Better written would be: > >

Re: Could this be any more obscure?

On Fri, Sep 28, 2018 at 2:57 PM ToddAndMargo wrote: > On 9/28/18 10:42 AM, Curt Tilmes wrote: > > Indeed we do, we have a special value just for that -- Inf or ∞. > > Inf or ∞ still means (to me) a number too large to represent. > But, I can't think of another way to say &q

Re: Could this be any more obscure?

On Fri, Sep 28, 2018 at 1:32 PM ToddAndMargo wrote: > So how am I suppose to enter that as a value? You can enter it as just plain Inf, or, if you are up to it, my preferred form: ∞ > What it really means is "all of them". It means infinite. For the .words() method, you can pass in an

Re: Could this be any more obscure?

On Wed, Sep 26, 2018 at 10:30 PM ToddAndMargo wrote: > > > You can also call .elems to see how many elements there are and > > .AT-POS() (same as []), .EXISTS-POS() to see if an element exists, etc. > One small correction before the nit-pickers jump on me... .AT-POS() isn't *really* the same as

Re: Could this be any more obscure?

On Wed, Sep 26, 2018 at 9:40 PM ToddAndMargo wrote: > Would you take a swipe at "$limit = Inf" > In the signature like that it is just a default. If you pass in a $limit parameter, that gets used like "a b c d e".words(3) sets $limit to 3, limiting words() to 3 words. If you don't pass

Re: Could this be any more obscure?

For each instance you are using [], it is the same as assigning to a variable, then calling [] on it. $ p6 '"a b c d e".words(3).say;' (a b c) same as my @x = "a b c d e".words(3); @x.say $ p6 '"a b c d e".words(3)[ 2, 4 ].say;' (c Nil) same as my @x = '"a b c d e".words(3); # same as @x =

Re: Could this be any more obscure?

On Wed, Sep 26, 2018 at 6:13 PM Brandon Allbery wrote: > On Wed, Sep 26, 2018 at 6:09 PM ToddAndMargo > wrote: > >> multi method words(Str:D $input: $limit = Inf --> Positional) >> > "a b c d".words(3); (a b c) passing the $limit parameter in with 3, limits the number of words returned to 3.

Re: extending built-in classes

On Sat, Sep 22, 2018 at 5:30 PM Larry Wall wrote: > On Sat, Sep 22, 2018 at 11:40:13AM -0700, Joseph Brenner wrote: > : Sounds good, thanks. > > Well, yes, *sounds* good. :-) > > Monkey patching is allowed but discouraged in Perl 6, because Ruby. > Mixed in roles:

Re: Information about Perl 6 internals

I haven't seen many responses to this yet. I am by no means a MoarVM/NQP/Rakudo internals expert, speaking only as a developer on top of those things, not inside them. On Sun, Sep 16, 2018 at 8:12 AM Fernando Santagata < nando.santag...@gmail.com> wrote: > I'm developing an interface to

Re: Rat

Rat is a type (a 'class'). It is also a method on class Numeric. You can take anything Numeric, and call .Rat() on it to get an equivalent Rat (well, within $epsilon) You can't, for example, say my Rat $x = pi; Since pi is not rational -- it won't fit in that box. You can, however, ask pi to

Re: metamorphosis or alchemy?

x can hold anything that is Real (which includes Rats) On Sun, Sep 16, 2018 at 10:20 PM ToddAndMargo wrote: > >> On Sun, Sep 16, 2018 at 10:07 PM ToddAndMargo >> <mailto:toddandma...@zoho.com>> wrote: > >> > >> On 09/16/2018 06:50 PM, Curt Tilmes wrote

Re: metamorphosis or alchemy?

some other Real in the box, and you still can't stick anything that isn't a Real in the box. On Sun, Sep 16, 2018 at 10:07 PM ToddAndMargo wrote: > On 09/16/2018 06:50 PM, Curt Tilmes wrote: > > Note that an object that is a Rat also does Real (see > > https://docs.perl6.org/type

Re: metamorphosis or alchemy?

Note that an object that is a Rat also does Real (see https://docs.perl6.org/type/Rat#Type_Graph) say Rat ~~ Real True Your're making a box that takes a Real, then putting a Rat (that also does Real) into that box. It then says "yes, you've got a Rat in there". On Sun, Sep 16, 2018 at 9:35

Re: Please explain this to me

Read this: https://perl6advent.wordpress.com/2017/12/02/perl-6-sigils-variables-and-containers/ Then go back and read it again. It took me several times, and I'm still not sure I get it all :) On Sun, Sep 16, 2018 at 8:49 PM ToddAndMargo wrote: > On 09/14/2018 08:07 PM, ToddAndMargo wrote: >

Re: .kv ?

On Fri, Sep 14, 2018 at 10:52 PM Curt Tilmes wrote: > > > On Fri, Sep 14, 2018 at 10:42 PM ToddAndMargo > wrote: > >> When I said "yet", I presumed the a variable can be >> redefined at will: >> >> $ p6 'my $x; say $x.perl; >>

Re: .kv ?

On Fri, Sep 14, 2018 at 10:42 PM ToddAndMargo wrote: > When I said "yet", I presumed the a variable can be > redefined at will: > > $ p6 'my $x; say $x.perl; > $x="abc"; say $x.perl; > $x=Nil; say $x.perl;' > Any > "abc" > Any > > And that the receiving method only cares what

Re: .kv ?

See https://docs.perl6.org/type/Signature#Constraining_defined_and_undefined_values If I say "my Int $x", $x is now an Int, but an undefined Int. If I say "my Int $x = 42", $x is an Int, but set to a defined value, 42. Both are Int: say 42 ~~ Int; # OUTPUT: «True␤» say Int ~~ Int; #

Re: Please explain this to me

There's a talk for that too: https://www.youtube.com/watch?v=7mkmZVIizFY 2016 - Basic OO in Perl 6‎ - Dave Rolsky On Tue, Sep 11, 2018 at 1:42 PM Brandon Allbery wrote: > I'd like to point out that Todd is from Perl 5, which doesn't distinguish > between subs and methods because its built-in

Re: Please explain this to me

On Tue, Sep 11, 2018 at 6:27 AM ToddAndMargo wrote: > method ($a: @b, %c) {}; # first argument is the invocant > I might say rather that $a is a parameter for the invocant. The @b parameter holds all the positional arguments, %c holds the named arguments. > class Foo { > method

Re: RFE: contains documentation

On Fri, Sep 7, 2018 at 8:58 PM ToddAndMargo wrote: > My big gripe with the documentation is that it is written as > a refresher for those that already know what they are doing. > This is why I am such a good case for spotting things that > do not resonate with beginners. > > I am clueless, until

Re: Handing over control

> > >>> >> On 3 Sep 2018, at 18:41, Parrot Raiser <1parr...@gmail.com> wrote: >> >>> >> In Perl 5, a program can hand over control to another with exec: >> >>> >> https://perldoc.perl.org/functions/exec.html >> >>> >> e.g perl -e 'exec vim' opens up vim >> >>> >> >> >>> >> What's the Perl 6

Re: Appropriate last words

On Mon, Sep 3, 2018 at 4:28 PM Parrot Raiser <1parr...@gmail.com> wrote: > If I understand that correctly, "die" needs to be documented as always > outputting the line number, and that for user-oriented messages, one > of the other techniques should be used. > die throws the Exception -- you can

Re: Force integers in an array?

On Mon, Aug 6, 2018 at 4:40 PM ToddAndMargo wrote: > Is there a way to force all the members of an array > to be integers and to error out is a non-integer > is written to one of its cells? > Sure, from the examples in the docs: https://docs.perl6.org/language/list#Typing my Int @a = 1, 2, 3;

Re: need regex help

On Thu, Aug 2, 2018 at 8:18 AM Timo Paulssen wrote: > Is this what you want? > > perl6 -e 'say "12345" ~~ /^<+alnum -alpha>+$/' > ｢12345｣ > > perl6 -e 'say "123a45" ~~ /^<+alnum -alpha>+$/' > Nil On Sun, Aug 5, 2018 at 6:41 PM Arthur Ramos Jr. wrote: > my $x = "9.0v1"; die "Horribly" if $x

Re: mixin syntax: does vs but

On Tue, Jun 12, 2018 at 12:56 PM Brandon Allbery wrote: > Which doesn't change the fact that there's what amounts to an > accessibility issue. > > Do you *really* want to tell some percentage of people that they must be > willing to use the One True Web Site, or else go away because they're not

Re: need sort help

> > On Fri, Jun 8, 2018 at 5:15 PM, ToddAndMargo > wrote: >> >> How do I fix this? >> >> $ ls | perl6 -e 'my @x=slurp(); say @x.sort' >> (log.06-08-2018_16:07:39.zip >> log.06-08-2018_17:07:39.zip >> log.07-08-2018_06:07:39.zip >> log.07-08-2018_16:07:39.zip >> log.12-08-2016_06:07:39.zip >> ) >>

Re: I need help with NativeCall

I built a bit on Richard's work.. On Sat, Mar 3, 2018 at 2:12 AM, Richard Hainsworth wrote: > In addition, I have not figured out how to access CStruct variables yet. They are mostly like normal classes, but unpacking native C bits isn't always straightforward. In this

Re: I need help with NativeCall

I also see another bug: method flags { do for AddrInfo-Flags.enums { .key if $!ai_flags +| .value } } should be method flags { do for AddrInfo-Flags.enums { .key if $!ai_flags +& .value } } Though you probably don't even need the flags.. Curt

Re: I need help with NativeCall

On Sat, Mar 3, 2018 at 10:58 PM, Richard Hainsworth wrote: > I realised from the C documentation that a fixed 14 byte variable was > required, but I could not find a mention about how to map that into Perl6. > Suppose it was necessary to create a structure, how would this