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Ada

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0
C

5.3K
3.7K
+ 1
230
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C vs Ada: What are the differences?

C: One of the most widely used programming languages of all time. ; Ada: A structured, statically typed, imperative, and object-oriented high-level programming language. It is a structured, statically typed, imperative, and object-oriented high-level programming language, extended from Pascal and other languages. It has built-in language support for design by contract (DbC), extremely strong typing, explicit concurrency, tasks, synchronous message passing, protected objects, and non-determinism. Ada improves code safety and maintainability by using the compiler to find errors in favor of runtime errors.

C and Ada can be categorized as "Languages" tools.

Decisions about Ada and C
Russtopia Labs
Sr. Doodad Imagineer at Russtopia Labs · | 0 upvote · 64.8K 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 Ada
Pros of C
    Be the first to leave a pro
    • 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

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    Cons of Ada
    Cons of C
      Be the first to leave a con
      • 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)

      Sign up to add or upvote consMake informed product decisions

      What is Ada?

      It is a structured, statically typed, imperative, and object-oriented high-level programming language, extended from Pascal and other languages. It has built-in language support for design by contract (DbC), extremely strong typing, explicit concurrency, tasks, synchronous message passing, protected objects, and non-determinism. Ada improves code safety and maintainability by using the compiler to find errors in favor of runtime errors.

      What is C?

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

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