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C

5.2K
3.6K
+ 1
230
Unison

1
10
+ 1
2
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C vs Unison: What are the differences?

Developers describe C as "One of the most widely used programming languages of all time". . On the other hand, Unison is detailed as "Modern, statically-typed purely functional programming language". It is an open source functional programming language based on a simple idea with big implications: code is content-addressed and immutable.

C and Unison belong to "Languages" category of the tech stack.

Unison is an open source tool with 2.53K GitHub stars and 110 GitHub forks. Here's a link to Unison's open source repository on GitHub.

Decisions about C and Unison
Russtopia Labs
Sr. Doodad Imagineer at Russtopia Labs · | 0 upvote · 62K views
Chose
Go
over
C++
C

As a personal research project I wanted to add post-quantum crypto KEM (key encapsulation) algorithms and new symmetric crypto session algorithms to openssh. I found the openssh code and its channel/context management extremely complex.

Concurrently, I was learning Go. It occurred to me that Go's excellent standard library, including crypto libraries, plus its much safer memory model and string/buffer handling would be better suited to a secure remote shell solution. So I started from scratch, writing a clean-room Go-based solution, without regard for ssh compatibility. Interactive and token-based login, secure copy and tunnels.

Of course, it needs a proper security audit for side channel attacks, protocol vulnerabilities and so on -- but I was impressed by how much simpler a client-server application with crypto and complex terminal handling was in Go.

$ sloc openssh-portable 
  Languages  Files    Code  Comment  Blank   Total  CodeLns
      Total    502  112982    14327  15705  143014   100.0%
          C    389  105938    13349  14416  133703    93.5%
      Shell     92    6118      937   1129    8184     5.7%
       Make     16     468       37    131     636     0.4%
        AWK      1     363        0      7     370     0.3%
        C++      3      79        4     18     101     0.1%
       Conf      1      16        0      4      20     0.0%
$ sloc xs
  Languages  Files  Code  Comment  Blank  Total  CodeLns
      Total     34  3658     1231    655   5544   100.0%
         Go     19  3230     1199    507   4936    89.0%
   Markdown      2   181        0     76    257     4.6%
       Make      7   148        4     50    202     3.6%
       YAML      1    39        0      5     44     0.8%
       Text      1    30        0      7     37     0.7%
     Modula      1    16        0      2     18     0.3%
      Shell      3    14       28      8     50     0.9%

https://gogs.blitter.com/RLabs/xs

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Pros of C
Pros of Unison
  • 64
    Performance
  • 45
    Low-level
  • 33
    Portability
  • 28
    Hardware level
  • 18
    Embedded apps
  • 12
    Pure
  • 9
    Performance of assembler
  • 7
    Ubiquity
  • 4
    Great for embedded
  • 4
    Old
  • 2
    OpenMP
  • 2
    No garbage collection to slow it down
  • 2
    Compiles quickly
  • 1
    Algebraic effects
  • 1
    Simpler

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Cons of C
Cons of Unison
  • 5
    Low-level
  • 3
    No built in support for concurrency
  • 2
    Lack of type safety
  • 2
    No built in support for parallelism (e.g. map-reduce)
  • 1
    Alpha quality

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- No public GitHub repository available -

What is C?

What is Unison?

It is an open source functional programming language based on a simple idea with big implications: code is content-addressed and immutable.

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What companies use Unison?
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    What tools integrate with C?
    What tools integrate with Unison?
      No integrations found

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