Re: [racket-users] Is it neccessary to learn how to define new language?

[WarGrey Gyoudmon Ju]

On Mon, Sep 19, 2016 at 3:12 PM, Lin Lee  wrote:

> I'm a newcomer to Racket,I have learned scheme before.
>
> Recently,I began to learn Racket,but I found that it's too complicate in
> reader and expander. So,I want to know what if i dont learn this part.Does
> it do harm to me?
>
> Any suggestion is helpful. tks


This is one of the core part what Racket is.
So, if you mean learning it the academic way, there is no reason to bypass
it.
If you mean learning to build practical applications, it depends,
nonetheless, you will not lose anything without that knowledge.

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[racket-users] note about info.rkt in package conflicts docs?

['John Clements' via Racket Users]

I’m separating a package into -lib and -test packages for the first time, and 
I’m wondering about the collection-level package files. Specifically, suppose 
that the packages foo-lib and foo-test both contribute files to the foo 
collection. Can each package contain its own foo/info.rkt file? Based on the 
existing htdp libraries and on my experiments, the answer is yes. If this 
appears in the documentation, I can’t find it. Indeed, I find this text in the 
section labeled “Package Conflicts”:

For the purposes of conflicts, a module is a file that ends in ".rkt", ".ss", 
or ".scrbl”.

Would it make sense to amend this to

For the purposes of conflicts, a module is a file that ends in ".rkt", ".ss", 
or ".scrbl” and is not “info.rkt”.

?

As I write this, though, I find myself wondering about info.rkt files in nested 
directories, and info.ss files, and differently named files written in the 
#lang info language. Am I missing some existing documentation?

John


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[racket-users] Is it neccessary to learn how to define new language?

[Lin Lee]

I'm a newcomer to Racket,I have learned scheme before.

Recently,I began to learn Racket,but I found that it's too complicate in reader 
and expander. So,I want to know what if i dont learn this part.Does it do harm 
to me?

Any suggestion is helpful. tks

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