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• Install Numpy in VirtualEnv on Windows

  - by StackUnderflow

  How can I install numpy in virtualenv... easy_install numpy is throwing error.. I can not use the binary installer because this would install numpy in the python main installation and not in virtualenv.. Thanks

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• Is there a compiled* programming language with dynamic, maybe even weak typing?

  - by sub

  I wondered if there is a programming language which compiles to machine code/binary (not bytecode then executed by a VM, that's something completely different when considering typing) that features dynamic and/or weak typing, e.g: Think of a compiled language where: Variables don't need to be declared Variables can be created doing runtime Functions can return values of different types Questions: Is there such a programming language? (Why) not? I think that a dynamically yet strong typed, compiled language would really sense, but is it possible?

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• Shift / reduce conflicts in grammar of arithmetic expression with n-ary sums / products

  - by aioobe

  Parsing binary sums / products are easy, but I'm having troubles defining a grammar that parses a + b * c + d + e as sum(a, prod(b, c), d, e) My initial (naive) attempt generated 61 shift / reduce conflicts. I'm using java cup (but I suppose a solution for any other parser generator would be easily translated).

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• How is List<T> implemented in C#?

  - by carter-boater

  I was thinking about the performance of calling List<T>.Indexof(item). I am not sure if it will be a O(n) performance for a sequential algorithm or O(log(n)) performance for a binary tree?? Thanks!

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• Datatype to save excel file in sql server?

  - by gowri-ganapathy

  Hi, I have a table in which there are two columns : 1. import type, 2. Excel import template. The second column - "Excel import template" should store the whole excel file. How would I save excel file in databse...can I use binary datatype column, convert excel file to bytes and save the same ? Thanks in advance !

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• How to use bundler gem binaries in path

  - by Sean Chambers

  I just started using bundler for gem packaging in vendor/. The problem is with certain gems (like rspec and cucumber) that have binaries. The binary path that is under my_app/vendor/gems/ruby/1.8/...cucumber-0.6.2/bin/ is not in my path, therefore when I go to run cucumber i get command cannot be found. What is the easiest way to execute the bundled gem binaries from within the app rather than adding a large number of folders to my path? Thanks

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• how to move a postgres schema via file operations ?

  - by Jerome WAGNER

  Hello, I have a schema schema1 in a postgres database A. I want to have a duplicate of this schema (model + data) in database B under the name schema2. What are my options ? I currently : * dump schema1 from database A * sed my way through schema renaming in the dump : schema1 becomes schema2 * restore schema2 in database B but I am looking for a more efficient procedure. For instance, via direct file operations on postgres binary files. Thanks for your help Jerome Wagner

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• hex dump of file in bash

  - by David Raswik

  How do I create a UNMODIFIED hex dump of a binary file in linux with bash? The od and hexdump commands both insert spaces in the dump, I DON'T WANT THIS, I need something that will simply write a long string with all the hex characters without inserting spaces or newlines in the output. How do I do this in bash?

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• In LabVIEW, get callees without loading a VI

  - by Underflow

  Here's an obscure Friday Morning question: Is it possible in LabVIEW to get the callees of a VI without loading the entire VI into memory? For instance, by reading static information from the binary? Thanks

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• How to compile a .cpp file into a Windows executable (.exe) file in Linux

  - by user69514

  I make this program in C++ using Code::Blocks on Ubuntu. I need to turn it into a Windows executable binary (.exe file), but I don't know how to do this. Is it possible?

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• Algorithm to represent Decision tables

  - by driveBy

  What would be the best algorithm to use if you wanted to store Decision tables in code, i've looked at the Adjacency matrix and Binary tree would anyone consider this to be the right direction? What other choices to I have?

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• PHP - CURL vs fopen vs fsocketopen ?

  - by TatMing

  I would write a WordPress plugin to parse all image source and check it's broken link or not. My idea is : Select all post&page's images by regex from MySQL Navigate the image url and get the response header (404 ,403 error etc) print a report Since i don't need actual to download the binary file, so in performance ,compare in CURL , fopen , fsocketopen Which one is worst to use? And one more question, which method can execute in multi-thread?

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• Any reasons to recompile Silverlight 3 controls for Silverlight 4?

  - by Alan Mendelevich

  When I release a custom control which works in both Silverlight 3 and Silverlight 4 is there any reason to provide a separate binary version targeted at Silverlight 4? As far as I understand SL4 apps using SL3 controls run normally in SL4 mode but maybe there are some hidden benefits of recompiling controls for SL4 (or gotchas of not doing so).

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• Socket throughput on localhost?

  - by gct

  I've got an app that's using sockets to push data, and I'm currently testing it on my localhost (so that the sender and receiver are on the same computer). I'm seeing between 36 and 66MB/s of throughput, which seems somewhat slow to me. What are normal throughput ranges for binary data on a local socket connection?

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• json-framework error in iPhone static library

  - by David Beck

  I have an iPhone app that uses the json-framework. I moved some of the code, including the json-framework source, from the main project to a static library. When I did this, the json-framework stopped getting compiled into the binary (double checked with class dump). This causes a nasty error: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFString JSONValue]: unrecognized selector sent to instance 0x43897f0' Everything else in the static library continues to function properly.

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• Read and write directly from and to compressed files in C

  - by victor

  Hi, in Java I think it is possible to cruise through jar files like they were not compressed. Is there some similar (and portable) thing in C/C++ ? I would like to import binary data into memory from a large (zipped or similar) file without decompressing to disk first and afterwards writing to disk in a compressed way. Maybe some trick with shell pipes and the zip utility?

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• "Hello World" in less than 20 bytes

  - by xelurg

  We have had an interesting competition once, where everyone would write their implementation of hello world program. One requirement was that is should be less than 20 bytes in compiled form. the winner would be the one whose version is the smallest... What would be your solution? :) Platform: 32bit, x86 OS: DOS, Win, GNU/Linux, *BSD Language: Asm, C, or anything else that compiles into binary executable (i.e. no bash scripts and stuff ;)

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• C# String to raw byte array

  - by Joel

  I have a string which contains binary data (non-text data). How do I convert this to a raw byte array?

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• Bitwise Operations -- Arithmetic Operations..

  - by RBA

  Hi, Can you please explain the below lines, with some good examples. A left arithmetic shift by n is equivalent to multiplying by 2n (provided the value does not overflow), while a right arithmetic shift by n of a two's complement value is equivalent to dividing by 2n(2 to the power n) and rounding toward negative infinity. If the binary number is treated as ones' complement, then the same right-shift operation results in division by 2n and rounding toward zero. Thankx..

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• Grayscale in matlab

  - by ruthenium

  I'm trying to convert a 2D array to grayscale but using mat2gray doesn't do anything and imshow() appears to create a binary image that when I graph I cannot rotate it, e.g. the original array is 2d but maps in 3d. So, what is the best way to take a grayscale of 2d array in Matlab so if you have A=rand(5,10) or something and want to take a grayscale of that, what is the best way?

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• On linux, what can cause dlopen to emit SIGFPE?

  - by kdt

  I have a library of dubious origins which is identified by file as a 32 bit executable. However, when I try to dlopen it on a 32 bit CentOS 4.4 machine, dlopen terminates with SIGFPE. Surely if there was something wrong with the format of the binary then dlopen should be handling an error? So the question is: What kinds of problems can cause dlopen to emit SIGFPE?

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• Analog of COM programming in Linux/UNIX

  - by Hernán

  The Component Object Model (COM) is (or was...) the way in Windows to provide language-neutral software components. There is any programming model in Linux/UNIX with the same philosophy of code reuse through binary components?

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• How do you compile gnu flex in Visual Studio 2005/2008?

  - by rev

  I can't figure this one out. I can download a win32 binary of flex 2.5.4a from gnuwin32, but I'd like to build the latest version (2.5.35) using Visual Studio 2005. I suppose I could build in in cygwin, but where is the fun in that? http://flex.sourceforge.net/

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• Is it possible to attach a debugging session to a running program in eclipse CDT

  - by stu

  I'm writing a netscape iplanet plugin (on solaris/C using eclipse) which is basically a shared object with specific entry points, and I'd like to be able to debug the shared object with eclipse's debugger (gdb). I remember doing something similar in AIX where you could make xldb attach to a running process. Is it possible to get eclipse to run gdb to attach to a running binary? And should I expect grief because I want to debug a dynamically loaded piece of code?

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• Java: repetition, overuse -- problem?

  - by HH

  I try to be as minimalist as possible. Repetition is a problem. I hate it. When is it really a problem? what is static-overuse? what is field-method overuse? what is class-overuse? are there more types of overuse? Problem A: when it is too much to use of static? private static class Data { private static String fileContent; private static SizeSequence lineMap; private static File fileThing; private static char type; private static boolean binary; private static String name; private static String path; } private static class Print { //<1st LINE, LEFT_SIDE, 2nd LINE, RIGHT_SIDE> private Integer[] printPositions=new Integer[4]; private static String fingerPrint; private static String formatPrint; } Problem B: when it is too much to get field data with private methods? public Stack<Integer> getPositions(){return positions;} public Integer[] getPrintPositions(){return printPositions;} private Stack<String> getPrintViews(){return printViews;} private Stack<String> getPrintViewsPerFile(){return printViewsPerFile;} public String getPrintView(){return printView;} public String getFingerPrint(){return fingerPrint;} public String getFormatPrint(){return formatPrint;} public String getFileContent(){return fileContent;} public SizeSequence getLineMap(){return lineMap;} public File getFile(){return fileThing;} public boolean getBinary(){return binary;} public char getType(){return type;} public String getPath(){return path;} public FileObject getData(){return fObj;} public String getSearchTerm(){return searchTerm;} Related interface overuse overuse of static in a Game

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