This question already has answers here:
Parsing of binary data with scala
(5 answers)
Closed 9 years ago.
I have some binary files which are written by a Java application in the following way:
DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(complete_path_to_file)));
dos.writeInt(aInteger);
dos.writeLong(aLong);
dos.writeFloat(aFloat);
dos.close();
Now, I'd like to read this kind files in a Scala framework but I really don't have any ideas about how to do that.
Could you help me?
Reading it using the same classes and methods you'd use in Java is probably going to be the most error-free, as you have a direct correspondence between read and write.
You can also use Scala I/O, which is the best library for file I/O for Scala -- and a possible addition to the standard library in the future.
Then there's sbinary, where less concern is given to I/O itself, and more concern is given to describing the binary record.
Related
This question already has answers here:
Is there an interpreter for C? [closed]
(13 answers)
Closed 7 years ago.
I'm not looking for csh, I'm looking for a shell for C similar to the Python or the Scala shells.
I understand that C is a compiled language, but is there anything out there that would let me quickly play around with things so I can e.g. better learn how pointers work? It should at least be theoretically possible to do this, wondering if anyone has taken the time to implement it.
As you well know that C is a compiled language. It is better to write C code than compile it, do some breakpoints, learn what value is in memory, where the pointer points etc.
But I think you mean this. Is there an interpreter for C?
This question already has answers here:
Are there any solid large integer implementations in C? [closed]
(7 answers)
Closed 8 years ago.
Recently in programming contest in Here, the problem is pretty straight forward but catch is with worst case scenario which we have to handle data of size 10^10000 .
I tried the program in python which is straight forward as i don't have to specify the datatype(It is taken care by the compiler ) but when i tried with C I couldn't find the correct datatype .
(I tried uintmax_t which didn't work out too).
So how to approach very huge type of data's in C ?
There is no built-in datatype in C that can store that big values. You will either have to write your own implementation or use a library. As this is a competition, though the second is not an option. Every now and then similar problems appear and usually the best approach is to use another language e.g. java(as it is usually available on competitions).
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
C equivalent of C++ STL
I am writing a program in C due to memory constraints on an embedded system. I need a std::unordered_set<int> to implement my algorithm. What STL-like libraries exist for C? If there isn't one which implements std::unordered_set<int> then what container can I use as an alternative?
sglib red black tree container seems to provide what I need.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
What's your favorite profiling tool (for C++)
Instead of do it directly inside the C code, I want a some tool to do it for me. e.g, given some C code, it returns how long time it's was executed. Something like LinqPad and most client that given a SQL-query,it returns how time the query was executed in *conds.
You many try
1)GNU profiler (gprof) for function level profiling
http://www.cs.utah.edu/dept/old/texinfo/as/gprof.html#SEC2
2)For overall time statistics you may use the command,
time
Example
3)You can also try parsing the files in /proc (/proc/[pid]/stat) for a particular process,
proc manual
This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
Are there any open source C libraries with common data structures?
What is the best source of algorithm and data structure implementations for C programmers? Links to an open source library or a book will do. (Please don't point to Sedgewick, as I already have his book).
Though I have not used GDSL ( Generic Data Structures Library ) I think it's worth considering as it implements many frequently used data structures.
The Algorithm Design Manual by Steven Skiena
(source: alberton.info)
Another C library worth checking out, especially because it hasn't been mentioned in answers to this question and also the other duplicate questions:
the C Algorithms Library, it can be found at http://c-algorithms.sourceforge.net/ and is covered by a BSD-style license, i.e. it can be freely used in any project. I've used it myself in several smaller programs without encountering any problems.
Art of Computer Programming, Volume 1: Fundamental Algorithms (3rd Edition)
http://en.wikipedia.org/wiki/The_Art_of_Computer_Programming