View mode: basic / threaded / horizontal-split · Log in · Help
April 25, 2012
Power of D
i search some example of something easy (more easy)  to do in D an not
in another language if possible
- D - C++
- D - Haskell
- D - Java
- D - python

thanks a lot
April 26, 2012
Re: Power of D
On 4/26/12 1:51 AM, bioinfornatics wrote:
> i search some example of something easy (more easy)  to do in D an not
> in another language if possible
> - D - C++

...

> - D - Haskell
> - D - Java
> - D - python

A segmentation fault is really easy to do in D but hard in those 
languages. :-P
April 26, 2012
Re: Power of D
On Wednesday, 25 April 2012 at 17:52:36 UTC, bioinfornatics wrote:
> i search some example of something easy (more easy)  to do in D 
> an not
> in another language if possible
> - D - C++
> - D - Haskell
> - D - Java
> - D - python
>
> thanks a lot

 Associative arrays?

C++:
#include <map>
#include <string>

map<string, string> m;

Java:
import java.util.*;


Map<String, String> map = new HashMap<String, String>();

D:
string[string] map

(Don't know the other two... sorry)
--

 Source/syntax parsing (compared to C++ involving 
templates/generics).

 Let's see, what else. Utility functions as pseudo members? Since 
in other language you'd have to include all utility functions in 
with the class, and try to give it all functionality right away. 
Anything your missing you may have to inherit from another class 
(with those functions) or call as regular functions.
April 26, 2012
Re: Power of D
On Wednesday, April 25, 2012 19:51:18 bioinfornatics wrote:
> i search some example of something easy (more easy)  to do in D an not
> in another language if possible
> - D - C++
> - D - Haskell
> - D - Java
> - D - python
> 
> thanks a lot

Pretty much everything that Andrei talks about in this recent presentation:

http://channel9.msdn.com/Events/Lang-NEXT/Lang-NEXT-2012/Three-Unlikely-
Successful-Features-of-D?format=html5

The starkest example is compile-time stuff - CTFE, string mixins, and some of 
the templated stuff. But even something as simple as scope statements are a 
pretty massive improvement which is impossible in any other language that I've 
ever used. You can use try-catch-finally blocks (which is what scope statements 
lower to anyway), but the code is _way_ messier and more error-prone that way.

- Jonathan M Davis
April 26, 2012
Re: Power of D
Am 26.04.2012 07:55, schrieb Era Scarecrow:
> Associative arrays?
>
> C++:
> #include <map>
> #include <string>
>
> map<string, string> m;
>
> Java:
> import java.util.*;
>
>
> Map<String, String> map = new HashMap<String, String>();
>
> D:
> string[string] map
>
> (Don't know the other two... sorry)
> --


Python:

map = dict() # or
map = {}
April 26, 2012
Re: Power of D
On Thursday, 26 April 2012 at 10:50:49 UTC, David wrote:
> Am 26.04.2012 07:55, schrieb Era Scarecrow:
>> Associative arrays?
>>
>> C++:
>> #include <map>
>> #include <string>
>>
>> map<string, string> m;
>>
>> Java:
>> import java.util.*;
>>
>>
>> Map<String, String> map = new HashMap<String, String>();
>>
>> D:
>> string[string] map
>>
>> (Don't know the other two... sorry)
>> --
>
>
> Python:
>
> map = dict() # or
> map = {}

I think that many D powerful features are also easily done in 
Python or have easy to use equivalents, thanks to built-in 
dictionaries, list comprehensions, eval, etc. and so many 
available libraries. Albeit at the price of a sloooow execution 
comparing to D (unless you can utilize native extensions).
April 26, 2012
Re: Power of D
On Thursday, 26 April 2012 at 12:30:02 UTC, Nicolas Sicard wrote:
> I think that many D powerful features are also easily done in 
> Python or have easy to use equivalents, thanks to built-in 
> dictionaries, list comprehensions, eval, etc. and so many 
> available libraries. Albeit at the price of a sloooow execution 
> comparing to D (unless you can utilize native extensions).

 Heavily used features on a certain scale or larger _should_ be 
built into the language. C++ added new/delete for memory 
management, but didn't give you any good containers; Although the 
STL is there (Honestly without watching a good explanation of how 
the STL is suppose to work, I got totally lost, and nothing made 
sense).

 Honestly dealing with the issues of C++ templates, syntax and 
macros makes me feel like I'm driving with square wheels (It's a 
bumpy ride). To quote Adam Savage (Mythbusters) "Square wheels 
are stupid".

 Unfortunately something in my brain makes learning unfamiliar 
languages that don't follow the structured syntax similar to 
C/Java/C++/D. I get utterly lost and my head as feels like it's 
dividing by zero.
April 26, 2012
Re: Power of D
On Wed, Apr 25, 2012 at 11:55 PM, Era Scarecrow <rtcvb32@yahoo.com> wrote:

> On Wednesday, 25 April 2012 at 17:52:36 UTC, bioinfornatics wrote:
>
>> i search some example of something easy (more easy)  to do in D an not
>> in another language if possible
>> - D - C++
>> - D - Haskell
>> - D - Java
>> - D - python
>>
>> thanks a lot
>>
>
>  Associative arrays?
>
> C++:
> #include <map>
> #include <string>
>
> map<string, string> m;
>
>
You actually want unordered_map<string, string> if you want the equivalent
of D's string[string].

Regards,
Brad Anderson
Top | Discussion index | About this forum | D home