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• Write string to fixed-length byte array in C#

  - by toasteroven

  somehow couldn't find this with a google search, but I feel like it has to be simple...I need to convert a string to a fixed-length byte array, e.g. write "asdf" to a byte[20] array. the data is being sent over the network to a c++ app that expects a fixed-length field, and it works fine if I use a BinaryWriter and write the characters one by one, and pad it by writing '\0' an appropriate number of times. is there a more appropriate way to do this?

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• Best practices for handling binary data in Ruby?

  - by StackedCrooked

  What are the best practices for reading and writing binary data in Ruby? In the code sample below I needed to send a binary file using over HTTP (as POST data): f = File.new("resp.der", "r") # binary file begin while true out.syswrite(f.sysread(1)) # out is an output stream (type IO) end rescue EOFError => err puts "Sent response." end While this code seems to do a good job, it probably isn't very idiomatic. How can I improve it?

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• Typedef in C# across several source files

  - by Danvil

  I am writing a C wrapper an would like to use a typedef aquivalent to define some types which should be valid in quite a lot of source files. Those "types" are just different aliases to [u]int16/32/64_t, but are useful to distinguish function parameters. One could use using MyId=System.Int32;, but this needs to be redeclared in every file as far as I see... Is there a better way?

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• Vim navigation clunkiness

  - by Sean Chambers

  I've committed myself to diving into vim to become faster at writing code for ruby/python and I'm having a hard time navigating around files. Mainly, I'm referring to switching between insert mode and navigation modes. Maybe I'm just not completely used to the editor yet but it feels very awkward to constantly be switching in and out of insert mode. Is this something that will go away with time? Are there any tricks to getting quicker at moving in and out of insert mode?

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• How to output a rotated text in C# form application?

  - by lajoo

  I'm writing a c# form application and i want to draw a scale and write some rotated values under it,is there any way to do this?

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• How do I create a gradient button on an iPhone?

  - by jkp

  How can I create a button that looks like the one found in the screenshot below on an iPhone with the 3.0 SDK? It's a button that shows when connecting to a host iTunes library from the iTunes remote. Is it a case of writing a custom control or is this a stock style?

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• how to convert unicode to printble string in QT stream

  - by user63898

  hi i writing stream in to file and stdout but im getting somekind of encoding like this: "\u05ea\u05e7\u05dc\u05d9\u05d8 \u05e9\u05e1\u05d9\u05de\u05dc \u05e9\u05d9\u05e0\u05d5\u05d9 \u05d1\u05e1\u05d2\u05e0\u05d5\u05df \u05dc\u05d3\u05e2\u05ea\u05d9 \u05d0\u05dd \u05d0\u05e0\u05d9 \u05d6\u05d5\u05db\u05e8 \u05e0\u05db\u05d5\u05df" how can i convert it to printable string

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• locking the clipboard c#

  - by kambamsu

  Hi, I was wondering if there is anyway to lock and unlock the clipboard from c#. Basically, I'd be writing something into it and I do not want anyone else to write to it before i pick up my stuff. Any help would be appreciated. Thanks

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• C++ Logger-Should I use an ordinary xml parser?

  - by Jonathon

  I'm working on a logging system for my 2D engine, and I'm confused on how I should go about creating/editing the file, and how I should output that file. I've learned that XML is more of a data carrier rather than a data displayer like HTML is. I've read that I can use XML to HTML converters. One method I've thought about is writing characters to a file in HTML. Clarity on these matters is what I ask of you, stack overflow.

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• initializing hashes

  - by Paul

  Seems like I am frequently writing something like this... a_hash['x'] ? a_hash['x'] += ' some more text' : a_hash['x'] = 'first text' seems like there ought to be a better way, but I can't find it.

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• XNA 2D/3D Drawing method?

  - by Adir

  What would be a better parctice, writing the drawing method inside the GameObject class or in the Game class? GameObject obj = new GameObject(); obj.Draw(); Or GameObject obj = new GameObject(); DrawGameObject(obj);

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• Is the Sleep operation no longer used in VBscript?

  - by Cheesus Toast

  The "Sleep" command as stated in many places over the internet (including here on this forum) DOES NOT WORK. Is it now an obsolete command? I am writing the VBScript code like this: sub button1_onclick() Wscript.Sleep 1000 div1.innerHTML = textbox1.value end sub It should wait 1 second and then execute that simple command. This is an utterly simple statement but it does not work. Plain and simple. It comes up with an error every time saying: Object Required: 'Wscript'

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• Prolog: declaring an operator

  - by B K

  I have defined ! (factorial) function and registered it as arithmetic function and an operator, so that I can execute: A is 6!. Now I'd like to define !! (factorial of odd numbers), but the same way - writing clauses, registering arithmetic_function and operator, calling A is 7!! - results in SyntaxError: Operator expected How should I, if possible, register !! operator ? Yes, I realize, ! is normally the cut.

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• Can we change the text/background color of an individual property in PropertyGrid

  - by Charvak

  I have a .NET PropertyGrid control which displays properties of some class. I want to change the color or font or background color(it doesn't matter just that they look different from the other displayed properties) of some property. I can do with writing custom editor but I was wondering If an easier method exists? If I use custom editor then how do i change the editor of built-in types like bool, int etc. Thanks

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• All Audio frequencies.

  - by TGadfly

  How can I get(Is it possible?) all audio frequencies are now playing in the system for writing some sound visualizer? Is there any library c++ or c#? Thanks in advance

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• tool to find out distance in terms of no. of hops in unix

  - by mawia

  Hi! all, I am writing an application for video streaming.In the application server is required to know the distance of the client from it self in terms of hop number.My question is,is there any tool/method other than traceroute available in unix environment to find it? I also need to find out the geographical location of the client.So is their any tool/method for this as well? Any help in this regard will be highly appreciated. Thanks in advance. Mawia

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• How do I calculate the average direction of two vectors

  - by Mike Broughton

  Hi, I am writing and opengl based iphone app and would like to allow a user to translate around a view based on the direction that they move two fingers on the screen. For one finger I know I could just calculate the vector from the start position to the current position of the users finger and then find the unit vector of this to get just the direction, but I don't know how I would do this for two fingers, I don't think adding the components of the vectors and calculating the average would work so I'm pretty much stuck... thanks in advance

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• does passing __m128i objects by reference to inline function cause these objects to be moved to stac

  - by ~buratinas

  Hello, I'm writing transpose function for 8x16bit vectors with SSE2 intrinsics. Since there are 8 arguments for that function (a matrix of 8x8x16bit size), I can't do anything but pass them by reference. Will that be optimized by the compiler (I mean, will these __m128i objects be passed in registers instead of stack)? Code snippet: inline void transpose (__m128i &a0, __m128i &a1, __m128i &a2, __m128i &a3, __m128i &a4, __m128i &a5, __m128i &a6, __m128i &a7) { .... }

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• Protocol communication help..

  - by Gopal

  Using Visual Studio 2005 Language: c# A new to c# I have software, the software should communicate with gprs devices. So i want to write a protocol, TCP, UDP communication code. Can any one give some idea for writing a source code and some sample code also.

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• How to add network printer remotely without knowing the IP?

  - by Steve

  Assume your friend from over 100km away asked you to add a network printer to his computer since you're so tech savvy. How would you add network printer remotely in this case? You would need: 0. Remote connection to your friend's computer 1. Printer IP and brand/model names 2. Respective drivers downloaded either from manufacturer's website or Windows Update driver Question is, how would you find out the IP address of the printer without bothering your friend too much with technical steps? Since your friend isn't as tech savvy as you - they wouldn't know which buttons to press to get IP address.

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• How to call DLL function in vbscript

  - by amritad

  I am writing VB script in which I have to call a function of a COM DLL. The fuction which I want to use is in structure and thus I want to create the object of that structure to access the required function. e.g. I have a dll 'BasicCom.dll', in which struct abc { bool xyz(); } Now I want to call xyz(). Is any one have any idea, how to deal with such call in Vb script.

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• Is there a way to enable both session and streaming in netTcpBinding?

  - by DxCK

  Hi I writing a WCF Service that need transfer large files, so i using streaming, but from the other hand i need to do username specific initializations. The problem is that getting the username and perform initialization every time is very expensive. If i could turn on session, i could just save initialized data in local variables in the service instance. Is there a way to turn on both streaming and session in netTcpBinding?

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• Check directory for files, retrieve first file

  - by Lowgain

  I'm writing a small ruby daemon that I am hoping will do the following: Check if a specific directory has files (in this case, .yml files) If so, take the first file (numerically sorted preferrably), and parse into a hash Do a 'yield', with this hash as the argument What I have right now is like: loop do get_next_in_queue { |s| THINGS } end def get_next_in_queue queue_dir = Dir[File.dirname(__FILE__)+'/../queue'] info = YAML::load_file(queue_dir[0]) #not sure if this works or not yield info end I'd like to make the yield conditional if possible, so it only happens if a file is actually found. Thanks!

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• How do I conditionally redirect the output of a command to /dev/null?

  - by Lawrence Johnston

  I have a script. I would like to give this script a quiet mode and a verbose mode. This is the equivalent of: if $verbose then redirect="> /dev/null" fi echo "Verbose mode enabled" $redirect # This doesn't work because the redirect isn't evaluated. I'd really like a better way of doing this than writing if-elses for every statement affected. eval could work, but has obvious side effects on other variables.

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• What is the proper way to get the current look-and-feel's component background color in Swing?

  - by John B.

  I am writing a custom Swing component with my own painting. I'd like to query whether or not the current look and feel's components are opaque, and if so, what their background color is so my component can use it too. I'm having a hard time finding that on Google. Anyone know? Thanks!

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