So I'm pretty new to version control but I'm trying to use Mercurial on my Mac to keep a large Python data analysis program organized. I typically clone my main repository, tweak the clone's code a bit, and run the code on my data. If the changes were successful I commit and eventually push the changes back to my main repository. I gu...
In Python I'm accessing a binary file by reading it into a string and then using struct.unpack(...). Now I want to write to that string using struct.pack_into(...), but I get the error "Cannot use string as modifiable buffer". What would be a suitable buffer for use with the struct module? ...
Is it possible to detect which Photoshop version a brush set (.abr) file is compatible with from its binary data? There is a open source C# programm called ABRViewer but it doesn't read version info. Sample brushes: http://mark-s.deviantart.com/art/Fractal-Brushes-Set-20484978 http://redheadstock.deviantart.com/art/Arcane-Circles-Sym...
This is very similar to other questions, but none of the other ones quite answer it, so please read through fully before shouting at me :) (See e.g. http://stackoverflow.com/questions/1394623/can-i-dynamically-call-a-lgpl-gpl-software-in-my-closed-source-application) I have written a closed source, commercial application. The applicat...
x = 1 # 0001 x << 2 # Shift left 2 bits: 0100 # Result: 4 x | 2 # Bitwise OR: 0011 # Result: 3 x & 1 # Bitwise AND: 0001 # Result: 1 I can understand the arithmetic operators in Python (and other langs), but I never understood 'bitwise' operators quite well. In the above example (from a Python book), I und...
I'm trying to send a push notification to APNs using Erlang. This is the code I came up with so far: -module(apnstest2). -export([connect/0]). connect() -> application:start(ssl), ssl:seed("someseedstring"), Address = "gateway.sandbox.push.apple.com", Port = 2195, Cert = "/path/to/Certificate.pem", Key = "/path/...
Suppose i have input array byte A[50]; i have put three diffrent data types values in array as below string of length 42 bytes(converted into binary) long with length 4 bytes(converted into binary) float with length of 4 bytes(converted into binary) Now i have defined a schema like as below <schemaforparsing> <field> ...
First things first, I'm on a Mac ssh'ing into a Linux machine via Terminal. I would like to view the contents of a file in the current directory, but in binary. Is there a binary mode for any text editors like VI or Nano or the like? ...
I have an issue with manipulating large number of record objects of type ActiveRecord model(Records are extracted from a complex operation but from the same table) and I want to pass that object set around between controller actions. So I have couple of solutions but is wage about which way to choose. Simpler but uglier solution is to sa...
I'm using Google App Engine and python for a web service. Some of the models (tables) I have in my web service have several binary data fields in them, and I'd like to present this data to a computer requesting it, all fields at the same time. Now, the problem is I don't know how to write it out in a way that the other computer knows whe...
I'm having some trouble figuring out how to deserialize a binary file. I mostly can't figure out how to use the second argument of SerializationInfo.GetValue(); - if I just put a type keyword there, it's invalid, and if I use the TypeCode, it's invalid as well. This is my current attempt (obviously it doesn't build). protected Grou...
Are there any objects in C# (or in .net) that represents a binary tree (or for curiosity) an n-ary tree? I am not talking about presentation tree controls, but as model objects. If not, are there any good external implementations? ...
How do I send data represented by a binary string (e.g. "01011101000100111", length is variable) to an std_logic signal given either fixed delay or clock signal? I want this for a testbench so I'd want to be able to arbitrarily change the binary string with as little hassle as possible, so I'm thinking of using generate. ...
This kind of builds up on Already asked question... However here, say, I'm given a hexadecimal input which could be a max of '0xFFFF' I'll need it converted to binary, so that I'd end up with a max of 16 bits. I was wondering if using 'bitset' it'd be quite simple.. Any ideas? EDIT : After getting answers, improvised piece of code he...
Is there a library for C# that allows similar functionality to python's struct from the standard library? One can emulate the struct library quite closely with real aligned structs. But I didn't find yet any way to directly control the endianess in C#'s structs (the C#'s structs seems to be geared more towards COM interop, and less towa...
Hi, I want to add my C++ source code to the corresponding elf binary file and I'm looking for the best way to do this. (I'm using several versions of my code and not every version should be committed into svn). Can I just append the source code without destroying the elf file using bash's >> operator? Or is objcopy --add-section a way ...
In my application I have a simple XML formatted file containing structured data. Each data entry has a data type and a value. Something like <entry> <field type="integer">5265</field> <field type="float">34.23</field> <field type="string">Jorge</field> </entry> Now, this formatting allow us to have the data in a human readable f...
How do I tell in a better way how many records there are in a binary file before I open up the file and read the records into an array for example? MyFile = fopen("DATA.dat", "rb"); i = 0; while (feof(MyFile) == 0) { fread(&tempReadingRecord,sizeof(tempReadingRecord), 1, file); if (feof(MyFile) == 0 { i++; } } fclo...
I created this application that contains several binary files (let's say X, Y and Z). I have a .plist file that specifies that the application should launch X when opened. Everything works fine 99.9% of the time but sometimes, it launches another binary (Y or Z). This usually happens after something crashed in my application so I am gue...
I am using cdb for a constant database in python. I would like to associate integer id's with some strings, and I would like to avoid storing each of these integer id's as strings, and instead store them as an integer. cdb though is looking for either a string or a read only buffer. Is there a way that I can store these keys as intege...