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• Subtraction without minus sign

  - by pragadheesh

  How can i do subtraction of integers in C without using either the unary or binary '-' operator? Or can we do the same for other data types like float/double?

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• How do I permanently remove (obliterate) files from history?

  - by phmr

  I commited a lot of files locally (including binary files removing & adding...) and now when I try to push it takes a lot of time. Actually I messed up my local repo history. How could I avoid this mistake in the future ? Can I transform a set of local revision 1-2-3-4 to 1-2 with 2 being the final revision of the local clone ?

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• How to read a .sqlite file from objective C

  - by Futur

  Hi All, We have a .sqlite file ported with the app, and i wanted to decrypt the file(not just the contents, the whole file), the code we have is able to read a .txt file and i also tried reading the file in binary mode. This isn't working, is there a way to read a .sqlite file from the code. kindly help

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• Settings File as Dictionary with Serialization

  - by AKRamkumar

  This is a three part question. One: Would using a Dictionary<String,Object> be a good way of saving data where it would be Dictionary<Key,Value> as the basis? Two: What would be a better way without using app.settings or xml? Three: How would you serialize this(Or the better solution) into a binary format that is compact and serializes quickly?

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• Python: Ignore 'Incorrect padding' error when base64 decoding

  - by swisstony

  I have some data that is base64 encoded that I want to convert back to binary even if there is a padding error in it. If I use base64.decodestring(b64_string) it raises an 'Incorrect padding' error. Is there another way?

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• Store an image in a SQL Server CE database

  - by Vaccano

  Does any one know of an example on how to store an image in a SQL Server CE database? What data type should the column be? (I am guessing binary.) I use Linq-To-Datasets. Is it possible using that to put the image into the database and pull it out again later? Thanks for any advice.

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• How to tell svn to not manage history for one file

  - by Prabu

  I don't know whether SVN has this feature, How do I tell svn to not maintain the history of changes for a file but it should have only the latest version of the file. Of course this is not the work of a version control, but it will be useful if I want to have some binary files within the repo without versioning.

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• How to keep track of the SCM revision in the build versions automatically?

  - by Jader Dias

  I want to look at a production binary and know which revision in the SCM corresponds to that build. How it is possible? Can I accomplish that in Visual Studio using VSS?

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• PHP Upload file enhance security

  - by mandril

  Hey.. my question is how to prevent someone upload a virus or some malicious code with the extension you pretend for example i have a pdf file uploader, anyone can upload a binary with pdf camouflage there are lots of programs to do that.

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• openxml option to be fully in text format ?

  - by asksuperuser

  I have tried to generate "Hello World" with openxml sdk. To my surprise when trying to open the xml document it was not purely text format but it contains some ugly binary stuff. Is there any option to have text format when the content is only text ?

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• how to detect if openGL/card supports non power of 2?

  - by Nick

  What is the best way to detect if a graphics card and compiled openGL binary supports textures which are not a power of 2 at run time?

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• Python's cPickle deserialization from PHP?

  - by Ciantic

  Hi! I have to deserialize a dictionary in PHP that was serialized using cPickle in Python. In this specific case I probably could just regexp the wanted information, but is there a better way? Any extensions for PHP that would allow me to deserialize more natively the whole dictionary? Apparently it is serialized in Python like this: import cPickle as pickle data = { 'user_id' : 5 } pickled = pickle.dumps(data) print pickled Contents of such serialization cannot be pasted easily to here, because it contains binary data.

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• Get Visual Studio to produce the same DLL for the same C# source

  - by JoelFan

  I noticed that when I build a given C# source to produce a DLL, the binary output is different each time. It would be helpful for our build / deployment process if this was not the case. Can I control this?

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• Tool to convert .Glade (or xml) file to C source.

  - by PP

  I am looking for tool that can convert .Glade (or xml) file to C source. I have tried g2c (Glade To C Translator) but i am looking for windows binary. Any one does know any good tool for window. Thanks, PP.

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• Can str_replace mangle a UTF-8 encoded string if it's only given valid UTF-8 encoded strings as argu

  - by Manos Dilaverakis

  PHP's str_replace() was intended only for ANSI strings and as such can mangle UTF-8 strings. However, given that it's binary-safe would it have a problem if it was only given valid UTF-8 strings as arguments? Edit: I'm not looking for a replacement function, I would just like to know if this hypothesis is correct.

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• converting 6 bytes hex string to 8 byte raw data

  - by ron

  How can i convert a hex string lenght 6 bytes for example string ='1122aaccddff'; to raw binary data of lenght 8 byes the last 2 bytes shoul be padded with zeros,

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• How do you measure the effect of branch misprediction?

  - by Matt Wamboldt

  I'm currently profiling an implementation of binary search. Using some special instructions to measure this I noticed that the code has about a 20% misprediction rate. I'm curious if there is any way to check how many cycles I'm potentially losing due to this. It's a MIPS based architecture.

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• Boost Serialization Library upgrade

  - by Konstantin

  Hello! How do I know that I can safely upgrade Boost Serialization Library on a production system without breaking compatibility with the existing data ? Is there any test that I should perform in order to be sure that all data stored in the binary format by previous version of the library will be successfully read by the new one ? Does Boost Serialization library itself guarantee some sort of compatibility between versions ?

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• How do Hex editors display data so quickly?

  - by user146780

  I'v created a Notepad-like application and if I load a 1MB file into the textbox, it takes about 1 minute. The Visual Studio Binary editor displays lines, Hex, and ascii versions in a fraction of a second. How do they get the data into the textbox so quickly? Thanks

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• How many numbers in an array are smaller than a given number?

  - by Raihan

  The naive one is O(n). Is there a one that is O(log n) or even O(1)? How about a sorted array? How about using binary search tree?

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• [RAILS] Howto to download a file from a http and save it into database

  - by Chris

  Hi, i would like to create a Rails controller that download a serie of jpg files from the web and directly write them into database as binary (I am not trying to do an upload form) Any clue on the way to do that ? Thank you

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• Apple rejected my app due to icons not matching. If I submit a new icon, does the review continue?

  - by dbonneville

  The status says "rejected" in iTunes Connect. I replied to the email I got, left the "line" in there that they apparently use for tracking. Do I just wait to hear back from them or do I reject the entire binary and start over? It's not clear from the email or the site what is supposed to or will happen next.

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• Compare odt files in svn

  - by Llistes Sugra

  I use svn to store the revisions of my specification files, written with oowrite (OpenOffice.org). I cannot find the way to compare different revisions of my odt files. It complains their are binary. Is there any tool or plugin to compare odt files stores in svn repository?

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• MSSQL differential backup to SQL statements

  - by noonex

  Is there any way to convert differential backup to SQL statements which will produce identical results when applied? Or any other solution similar to binary log in MySQL?

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• Hash Table v/s STL map in C++

  - by anon

  Hi, I am trying to learn C++ maps. Was just wondering about the implementation of STL map. I read it employs Binary search tree. Is there a implementation of hash table in STL? How exactly do STL map stores Key Value pairs?

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