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Search found 34 results on 2 pages for 'sorush r'.

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  • Strange problem with libc: undefined reference to `crypt'

    - by sorush-r
    I moved from Archlinux to Kubuntu 12.04 yesterday. I compiled buildroot 2012.08 on Archlinux without any problem. Though on Kubuntu libcrypt seems to be broken. sysvinit can't find it anywhere. glibc-dev and all dependencies are installed. How do I link to libcrypt? Or, which package containts that library? ... bc-gcc sulogin.o -o sulogin sulogin.o: In function `main': sulogin.c:(.text+0x49d): undefined reference to `crypt' collect2: ld returned 1 exit status

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  • C++11 support in GNU automake

    - by sorush-r
    I'm trying to port buildsystem of my project to GNU autotools. The code need to be compiled with -std=c++11 or -std=c++0x flag. I want my configure script to check if compiler supports C++11 or not. I tried adding AX_CHECK_COMPILE_FLAG([-std=c++0x], [CXXFLAGS="$CXXFLAGS -std=c++0x"]) to configure.ac file but configure fails with this error: ... ./configure: line 2732: syntax error near unexpected token `-std=c++0x,' ./configure: line 2732: `AX_CHECK_COMPILE_FLAG(-std=c++0x, CXXFLAGS="$CXXFLAGS -std=c++0x")'

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  • exe files and Python

    - by Sorush Rabiee
    i have some questions about python: 1- How to build .exe files from .py files? 2- How to run a program with arguments and receive the result by python code? 3- How to load .NET library in python code (or write python in VS.NET IDE [!?])? 4- is built-in integer of python 3.1 something like a string? it calculates 200! in less than one second and calculates 2^1 to 2^7036 (by a simple recursive algorithm & writing them to a text file) with a 1.75GHz cpu in 4 minuets, so if it is a string, how it can be so fast like this? is there a great difference between memory type and logical calculation of python with c++? 5- what is the best python practice? how can i be an expert?

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  • Which OOD approach should I take?

    - by Sorush Rabiee
    According to Niklaus Wirth, Algorithms + Data Structures = Programs. So I use this as a start point to object-oriented modeling and inheritance design: in a way that I separate the 'Objects' from 'Operations'. then look for patterns and inheritance hierarchy. But now after practice I guess it's not a good idea for every modeling problem, because sometimes it's not effective. (I mean there is no possibility of developing (or is very hard to develop) codes of Turing-Completed languages based on this paradigm.) What is your viewpoint for designing an OOD structure as an experienced programmer?

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  • OpenType programming

    - by Sorush Rabiee
    Hi all Recently i asked two questions (1 and 2) about using OpenType features in programs written by python and .net languages, but didn't get an answer. i realized there is no way to change text rendering engines of operating systems, or force them to use OpenType. so now want to implement my own. such a program that: provides a text engine that receives glyph shapes from otf and ttf files and renders them in sequence of glyphs in text. generates all of OTL features can be used in other parts of applications like controls and components of .NET or python GUI libraries. if python and .net languages are not suitable in this situation, aware me about other programming languages or tools. comments and answers about text rendering system of common Operating Systems, or designing text engines compatible with unicode 5.02 protocol are welcomed.

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  • Converting digits, generated by weblog service, to Indic or Roman

    - by Sorush Rabiee
    I need to write something in my html code to convert digits of form 0123456789 to ?????????? (Arabic digits). the number of visitors is generated by blog service. and I want to convert its digits to Arabic. Counter: ????? ????????????? : <BlogSky:Weblog Counter /> ??? the Persian part of above code mean 'Number of visitors' and 'Persons' (from left to right). but digits are represented in latin (0123...). Is it possible to write something like a function in html? i want it to be a global one for using in weblogs. Note: I don't know anything about web programming languages. (and don't want to learn!). I'm not sure about language of above code. (html?)

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  • how to write programs that using advanced OpenType features?

    - by Sorush Rabiee
    How could I write a simple program using OpenType tables in order to dynamically render text? please answer in : assembly , C , C++ , C# , java or Python (and a little WPF:-) or introduce libraries of them. comments and answers about text rendering system of common Operating Systems, or designing text engines compatible with unicode 5.02 protocol are welcomed.

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  • An extended Bezier Library or Algorithms of bezier operations

    - by Sorush Rabiee
    Hi, Is there a library of data structures and operations for quadratic bezier curves? I need to implement: bezier to bitmap converting with arbitrary quality optimizing bezier curves common operations like subtraction, extraction, rendering etc. languages: c,c++,.net,python Algorithms without implementation (pseudocode or etc) could be useful too. (especially optimization)

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  • How to write outline data into .otf files?

    - by Sorush Rabiee
    I need to edit or completely replace outline data (bezier curves) of OpenType fonts. the input data is an EPS file that i have to write it into one specified glyph of an otf file with a certain scaling. (The glyph is specified by PostScript name OR Unicode value.) I need something like an encoder (or just a library of file structure of OpenType)? where to find about structure of otf and ttf files? Note: python-realated tools and libraries are performed :-?

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  • how to write programs using advanced OTL features? or :

    - by Sorush Rabiee
    how to write programs using advanced OTL and OTF features? is it possible in .net? I mean is there a way to force program to change its text rendering engine, or creating one from base? note: there is some features of OpenType like rlig liga and swash, that are ignored by programs written by .net. but I see applications, like most of font viewing programs, using Advanced OTF features. I'm pretty sure that they are created by .net technology.

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  • How to convert closed bezier curves to Bitmaps?

    - by Sorush Rabiee
    I need an algorithm to convert a closed bezier curve (perhaps self-crossing) to a binary bitmap: 0 for inside pixels and 1 for outside. I'm writing a code that needs to implement some operations on bezier curves, could anybody give me some resources or tutorials about beziere? Wikipedia and others didn't say anything about optimization, subtracting, union, knot insertion and deletion and other operations :-)

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  • how to write programs that they use advanced OpenType features?

    - by Sorush Rabiee
    How could I write a simple program using OpenType tables in order to dynamically render text? please answer in : assembly , C , C++ , C# , java or Python (and a little WPF:-) or introduce libraries of them. comments and answers about text rendering system of common Operating Systems, or designing text engines compatible with unicode 5.02 protocol are welcomed.

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  • Changing associativity

    - by Sorush Rabiee
    Hi... The associativity of stream insertion operator is rtl, forgetting this fact sometimes cause to runtime or logical errors. for example: 1st- int F() { static int internal_counter c=0; return ++c; } in the main function: //....here is main() cout<<”1st=”<<F()<<”,2nd=”<<F()<<”,3rd=”<<F(); and the output is: 1st=3,2nd=2,3rd=1 that is different from what we expect at first look. 2nd- suppose that we have an implementation of stack data structure like this: // //... a Stack<DataType> class …… // Stack<int> st(10); for(int i=1;i<11;i++) st.push(i); cout<<st.pop()<<endl<<st.pop()<<endl<<st.pop()<<endl<<st.pop()<<endl; expected output is something like: 10 9 8 7 but we have: 7 8 9 10 There is no internal bug of << implementation but it can be so confusing... and finally[:-)] my question: is there any way to change assocativity of an operator by overloading it?

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  • some troubles with WPF and Windows XP

    - by Sorush Rabiee
    is .net framework 3 compatible with xp? i install visual studio 9.0 (.net 3.5) on win XP. when i compile a WPF project and try to run it, this error occurs: cannot initialize application ...... at address 0x<some digits> (antivirus protection is off) after first fail of wpf, all other project types (windows application, console &...) after compiling don't run. where is problem?

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  • What is the result of X(X,X)? [closed]

    - by Sorush Rabiee
    A friend who studies pure mathematics ask me to think about the following problem. Suppose that there is an algorithm named X that has 2 inputs: A and a_1...a_n, where 'A' stands for an arbitary algorithm and 'a_1..a_n' are inputs of A. X receives A and its inputs and returns true if A with a_1..a_n could be terminated, and false if A with a_1..a_n inputs fall into an infinite loop (never ends). Like this: A(n): while(n<5): write "I'm immortal!" and the result of X(A,6) is true and X(A,2) is false. So what is the result of X(X,X)? Also, do you know who was the first to introduce this problem?

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  • count of distinct acyclic paths from A[a,b] to A[c,d]?

    - by Sorush Rabiee
    I'm writing a sokoban solver for fun and practice, it uses a simple algorithm (something like BFS with a bit of difference). now i want to estimate its running time ( O and omega). but need to know how to calculate count of acyclic paths from a vertex to another in a network. actually I want an expression that calculates count of valid paths, between two vertices of a m*n matrix of vertices. a valid path: visits each vertex 0 or one times. have no circuits for example this is a valid path: but this is not: What is needed is a method to find count of all acyclic paths between the two vertices a and b. comments on solving methods and tricks are welcomed.

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  • How to implement this mechanism:

    - by Sorush Rabiee
    Hi i want to implement a dynamic relation mechanism with python something like: a:=10 b:=30 c:=a+b print c a+=20 print c output: 40 60 c is always result of a+b. so if a or b change, then c automatically updates value. i write a code in C# and do this by set and get mechanism. now want to translate it to python code for using in another program (FontLab Studio 5). I'm not so familiar with Python. does he have a get,set feature like C#? if not ho to implement one?

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  • Convert VB.NET code to C#

    - by Sorush Rabiee
    Hi people, I have three projects written with VB.NET (2005) and have to convert them to C# code. (I know that i don't need to convert codes of .net languages at all). I have no time to rewrite them, need a tool or script to convert. Note: they are console applications.

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  • What is result of X(X,X)?

    - by Sorush Rabiee
    a friend who studies pure mathematics ask me to think about this problem: suppose that there is an algorithm named X that have 2 inputs: A and a_1...a_n, 'A' stands for an arbitary algorithm and 'a_1..a_n' are inputs of A. X recieves A and its inputs and returns true if A with a_1..a_n couold be terminated, and false if A with a_1..a_n inputs fall into infty loop (never ends). like this: A(n): while(n<5): write "I'm immortal!" and result of X(A,6) is true and X(A,2) is false. so what is the result of X(X,X)? ...and do you know who introduced this problem first time?

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  • Counting problem: possible sudoko tables?

    - by Sorush Rabiee
    Hi, I'm working on a sudoko solver. my method is using a game tree and explore possible permutations for each set of digits by DFS Algorithm. in order to analyzing problem, i want to know what is the count of possible valid and invalid sudoko tables? - a 9*9 table that have 9 one, 9 two, ... , 9 nine. (this isn't exact duplicate by this question) my solution is: 1- First select 9 cells for 1s: (*) 2- and like (1) for other digits (each time, 9 cells will be deleted from remaining available cells): C(81-9,9) , C(81-9*2,9) .... = 3- finally multiply the result by 9! (permutation of 123456789 in (*)) this is not equal to accepted answer of this question but problems are equivalent. what did i do wrong?

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  • count of paths from A[a,b] to A[c,d] without duplicating?

    - by Sorush Rabiee
    I write a sokoban solver for fun and practice, it uses a simple algorithm (something like BFS). now i want to estimate its running time ( O and omega). but i need to know how to calculate count of paths from a vertex to another in a network. each path from a to b is a sequence of edges with no circuit. for example this is a correct path: http://www.imgplace.com/viewimg143/4789/501k.png but this is not: http://www.imgplace.com/viewimg143/6140/202.png

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