I’m here to stay.
I was about to start learning Perl in a proper way, but always decided against it. I just can’t find a good reason for myself to write Perl code. Unless you want to read or edit others Perl code, what is the reason to learn it? GNU+Bash and Python are often enough for me.
So why learning and using Perl in modern age and day as a newcomer to the language? Look, I’m not negative here, just asking honest question. Because I am actually searching for good reasons to learn Perl.
Or on Linux systems as well. Another reason why Open Source / Libre Software is not only important, but essential to keep the freedom of users intact. There is no tracking, no artificial limitation from Oracle and no cost involved as well.
The Java implementation from Oracle needs to die. Everyone should switch to openjdk or stop using Java.
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Ok I see, I stand corrected then. Its a misconception I had without actually going through all of this, so my bad (will edit my replies to mark them). At least in Python we can do this print(foo := (bar := 3)) but not on its own as foo := 3 .
But that mathematical pseudo code has nothing in common with the walrus operator (Edit: I’m so sick of my stupidness.):= in Python and Go. They are just the same symbols, but with a totally different meaning and use case. Its an operator designed specifically for programming languages, because that is not applicable to mathematics at all. In mathematics you don’t have an assignment operator a = 69 that cannot be used as part of an expression. Therefore you don’t need a dedicated := that yields an expression that can be used as part of an expression and create a variable if its not already.
Turns out it was introduced in 3.8, released in 2019, so it was much too late to inspire Go
You are probably right about that. But don’t forget that the operator didn’t made it day one, there was lot of discussion before and probably testing it in the beta releases before. But given how old Golang at that point is, you are right about my take on inspiration. This operator wasn’t a new invention in Python.
It also has a substantially different meaning than in Go.
I don’t know if there’s an “official” rationale for the Go syntax, but := is a fairly common (but not ubiquitous) math notation meaning “define the thing on the left to be equal to the expression on the right”, i.e. to distinguish it from the other use of =, i.e. “the expression on the left must be equal to the expression on the right.”
Does it though? In both cases, Go and Python, the operator will assign a variable a value and also use it as an expression. That is useful in cases like for loops or other cases where you want immediately use the variable content as an expression. This cannot be done with the regular assignment operator (Edit: Read the reply, I learned something myself. That’s why its important that you don’t blindly teach people like I did.)a = 69, which itself is not an expression. So in practical terms, its the same in usability for Go and Python. So its doing the same for both languages and has the same differences to the assignment operator.
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The := operator is called walrus operator and is inspired by Python I think. It’s declaring a variable and assigning it in one go. map[string] int is defining a map (associative array or also known as dictionary in Python), with string as key type and int as value type. And the following {} is the body of the associative array, meaning empty content.
I only played a bit with Go and did basic tutorials. I might go back to it at some point, but Zig is much more appealing to me. Go is too simple in the language to me, but on the other side, this is exactly whats appealing.
I’m not sure if this is relevant, but the first thought reading this is, aren’t the IPs shared too? I mean everyone connecting to the Torrent / page would be able to read from everyone connecting to it. But again, I have no idea if this is applicable in such a case. It’s just what I think when reading Torrent, that’s the extent of my knowledge.
Was posted a few hours before and has many comments: https://beehaw.org/post/13943043
I copied the sub-headings from the document, serving as an overview:
The only issue I have is the name of the project. They should have gone with a more distinct name.
I see, it’s a universal solution. But the produced code is not optimal in this case. I believe the Amber code SHOULD analyze it and decide if a more direct and simple code generation for Bash is possible. That is what I would expect from a compilers work. Otherwise the generated code becomes write only, not read only.
But its the other way, not analyzing Bash code. The code is already known in Amber to be an expression, so converting it to Bash expression shouldn’t be like this I assume. This just looks unnecessary to me.
Especially as Bash can do that anyway with if [ "${__0_age}" -lt 18 ] as an example, and could be straight forward. Also Bash supports wildcard comparison, Regex comparison and can change variables with variable substitution as well. So using these feature would help in writing better Bash. The less readable output is expected though, for any code to code trans-compiler, its just not optimal in this case.
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Basically another shell scripting language. But unlike most other languages like Csh or Fish, it can compile back to Bash. At the moment I am bit conflicted, but the thing it can compile back to Bash is what is very interesting. I’ll keep an eye on this. But it makes the produced Bash code a bit less readable than a handwritten one, if that is the end goal.
curl -s "https://raw.githubusercontent.com/Ph0enixKM/AmberNative/master/setup/install.sh" | $(echo /bin/bash)
I wish this nonsense of piping a shell script from the internet directly into Bash would stop. It’s a bad idea, because of security concerns. This install.sh script eval and will even run curl itself to download amber and install it from this url
url="https://github.com/Ph0enixKM/${__0_name}/releases/download/${__2_tag}/amber_${os}_${arch}"… echo “Please make sure that root user can access /opt directory.”;
And all of this while requiring root access.
I am not a fan of this kind of distribution and installation. Why not provide a normal manual installation process and link to the projects releases page: https://github.com/Ph0enixKM/Amber/releases BTW its a Rust application. So one could build it with Cargo, for those who have it installed.
For the language itself, maybe. But never discourage people from learning something new. He seems to be excited and has motivation. There are also lot of legacy code, which would never get ported or maintained if nobody learns the language anymore, only a few old people at that point (look what happens to COBOL).