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Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

25-Jan-20 12:00

Aqui, vamos!

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

OriginalGriff25-Jan-20 19:45

OriginalGriff

25-Jan-20 19:45

Le plume de ma tante est sur le bureau de mon oncle.

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Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

BillWoodruff25-Jan-20 20:28

Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

25-Jan-20 20:28

[^]

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

RickZeeland25-Jan-20 22:02

RickZeeland

25-Jan-20 22:02

Vamos a la playa $Shucks | :-\$

Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

Johnny J.26-Jan-20 0:24

Johnny J.

26-Jan-20 0:24

OH, OH, OH, OH, OH! D'Oh! | :doh:

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Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

RickZeeland25-Jan-20 22:20

RickZeeland

25-Jan-20 22:20

I translated your text with Google translate and found out that it is about an UDEMY course "WPF e XAML em PORTUGUÊS".
I think the problem that you have no subscribers is caused by the fact that it is written in portuguese which narrows down the audience, so I would advise to translate it into English.
But it may also be a question of time before you get subscribers, as your course is quite new.

Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

fioresoft26-Jan-20 16:12

fioresoft

26-Jan-20 16:12

The problem is that in english there was too many versions of the same course and the brazilian community in udemy is quite large. thanks.

Re: Eu criei um curso de WPF e XAML na UDEMY e tenho 0 inscritos

RickZeeland26-Jan-20 20:08

RickZeeland

26-Jan-20 20:08

Ah, forgot about the Brazilians, they are not to be underestimated indeed $Shucks | :-\$

I'm at a loss, need some ideas.

honey the codewitch25-Jan-20 11:08

25-Jan-20 11:08

So in my Rolex lexer reboot, I'm potentially adding a way to specify lexer rules using eXtensible Backus-Noir Form instead of regex (although you can also use regex)

My parsers already allow for this. But I'm thinking of including this feature in my lexer directly.

This creates a strange problem for me, wherein as soon as I add this feature my lexer documents fit the exact same format as my parser documents.

XBNF format.

So what?

Well, the what is that if you pass the same document to a parser that you pass to the lexer you'll get different results, and you shouldn't. You should get just the terminals rendered by the lexer generator. That way the parser can work with the lexer from the same spec document.

But if i pass one of these documents to my lexer, it will treat all of the elements as terminals! why would it not?

My options are to make a new file format specifically to distinguish between this one and XBNF, or to make Rolex only render parts of the XBNF document - the terminal parts. It's kind of counterintuitive that last bit, but it's the Right(TM) result.

*sigh*

Fortunately with the last option if you only use regex in it, none of the above matters. But if you start using BNF in it, it will get confused as to what's a terminal and what's not, forcing you to mark every terminal declaration with the terminal attribute.

I don't like that.

I might make a command line option to either force the document to be a lexer document, or to force it to be treated as a parser document.

This is confusing even to explain. There has to be a better way.

Real programmers use butterflies

Eddy Vluggen25-Jan-20 11:18

25-Jan-20 11:18

BNF is a (data)normalization issue; how does this apply to lexers?

It has nothing to do with a regex. Thread carefully before you explain.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

honey the codewitch25-Jan-20 11:23

25-Jan-20 11:23

Backus Naur form is a format for describing textual data formats.

[ Optional ]
{ Repeat }
Alternation1 | Alternation2

(there are many variations)

Backus–Naur form - Wikipedia[^]

You can describe lexible expressions using it.

For example

Digit = "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9"
Letter = "A"|"B"...

Although that sucks which is why i let you intermingle regex

Digit = '[0-9]'
Letter = '[A-Za-z]'

and then you can declare

LetterOrDigit = Letter | Digit

Real programmers use butterflies

Eddy Vluggen25-Jan-20 11:42

25-Jan-20 11:42

honey the codewitch wrote:
Backus Naur form is a format for describing textual data formats.

I was preparing to take away a fiber from your thread.

Boyce–Codd normal form - Wikipedia[^].

In regexes, you rule, my Queen.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

honey the codewitch25-Jan-20 12:08

25-Jan-20 12:08

Eddy Vluggen wrote:
In regexes, you rule, my Queen.

There is no truth to the rumor that I am Queen of the Lizard People.

*eats a bug*

Real programmers use butterflies

Eddy Vluggen25-Jan-20 12:22

25-Jan-20 12:22

Give my regards to Nakor Big Grin | :-D

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

BillWoodruff25-Jan-20 21:53

25-Jan-20 21:53

Eddie, HTC,

BNF has a much wider, fascinating, usage in the history of modern logic, and, computer science: [^]

Quote:
The origin of BNF is not as important as its impact on programming language development. During the period immediately following the publication of the ALGOL 60 report BNF was the basis of many compiler-compiler systems. Some directly used BNF like "A Syntax Directed Compiler for ALGOL 60" developed by Edgar T. Irons and "A Compiler Building System" Developed by Brooker and Morris. Others changed it to a programming language. The Schorre Metacompilers made it a programming language with only a few changes. <class name=""> became symbol identifiers dropping the enclosing <,> and using quoted strings for symbols of the target language. Arithmetic like grouping provided simplification that removed using classes where grouping was its only value. The META II arithmetic expression rule shows grouping use. Output expressions placed in a META II rule are used to output code and labels in an assembly language. Rules in META II are equivalent to a class definitions in BNF. The Unix utility yacc is based on BNF with code production similar to META II. yacc is most commonly used as a parser generator, and its roots are obviously BNF. BNF today is one of the oldest computer-related languages still in use.

The way Panini nailed it some 2500+ years ago [^] fascinates me ... if i had another life, I'd study Sanskrit grammar.

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

BillWoodruff25-Jan-20 21:02

25-Jan-20 21:02

honey the codewitch wrote:
eXtensible Backus-Noir

This is a wonderful malapropism; I hope it was intentional !

imho, trying to make "one ring that rules them all" is generally a mistake ... unless you want to play Sargon.

cheers, Bill

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

honey the codewitch25-Jan-20 21:11

25-Jan-20 21:11

If you mean Backus-Noir vs Backus-Naur it was my fingers getting the better of me.

They type phonetically when I don't mind them.

Real programmers use butterflies

BillWoodruff25-Jan-20 21:26

25-Jan-20 21:26

I'm a fan of Bacchus-Noir OMG | :OMG:

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

BillWoodruff25-Jan-20 21:35

25-Jan-20 21:35

honey the codewitch wrote:
phonetically

and, when the fingers don't know French.

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

honey the codewitch25-Jan-20 21:38

25-Jan-20 21:38

These fingers make a point to not know French.

Real programmers use butterflies

BillWoodruff25-Jan-20 21:40

25-Jan-20 21:40

honey the codewitch wrote:
These fingers make a point to not know French.

Touché !

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

Greg Utas26-Jan-20 2:39

Greg Utas

26-Jan-20 2:39

Sargon?!

honey the codewitch26-Jan-20 3:07