I'm writing a simple loop to make sure my input is a valid binary. Ex: I want to throw an error when any number higher than one is user input. I know I need to check against the ASCII numbers. What is going on here? I should not be getting an error when I input binary. Any thoughts? for (int i=0;i<size;i++) { printf("%i is string su...
Hi- I compile this program: #include <stdio.h> int main() { printf("Hello World!"); return 0; } With this command: gcc -c "hello.c" -o hello And when I try to execute hello, I get bash: ./hello: Permission denied Because the permissions are -rw-r--r-- 1 nathan nathan 856 2010-09-17 23:49 hello For some reaso...
I have a binary file, where are a few values what should be changed. To be more exact, at two part of the file, in the beginning, there are two HEX values 66 73 69 6D 35 2E 36 39 what should be changed to 4D 53 57 49 4E 34 2E 31 How could I do this async, and as fast as possible? I've got to the point where I read the whole file in...
I'm working on a webapp that uses several cutting-edge WebKit features. It essentially does this: reads a local file with the FileReader, unzips each file into a string using a JavaScript unzip library, and POSTs each file using XMLHttpRequest. This works great for text files, but unfortunately it corrupts binary files (in this case, ima...
Hi, I have base 64 encoded string that looks something like this. cuVrcYvlqYze3OZ8Y5tSqQY205mcquu0GsHkgXe4bPg= I have tried base64_decode and output is. råkq‹å©ŒÞÜæ|c›R©6Ó™œªë´Áäw¸lø I think I may be doing something wrong. I appreciate any help to convert base64 string to binary array. Thanks ...
i store blob data with php like this $this->_db->exec"CREATE TABLE media (url TEXT, content BLOB)"); $fp = fopen($encoded['path'], 'rb'); $sql = "INSERT INTO media (url, content) VALUES (?, ?)"; $stmt = $this->_db->prepare($sql); $stmt->bindValue(1, $encoded['url'], PDO::PARAM_STR); $stmt->bindValue(2, $fp, PDO::PARAM_LOB); $stmt->exec...
Hi, I am trying to get a grip around the packing and unpacking of binary data in Python 3. Its actually not that hard to understand, except one problem: what if I have a variable length textstring and want to pack and unpack this in the most elegant manner? As far as I can tell from the manual I can only unpack fixed size strings dire...
Hi I am trying to make a very easy converter/compressor; the program should take a file with 4 different types of ASCII characters and writ it out as binary to a file. The program should also read the binary file and convert it to ASCII and print it out on the screen. Under is my code, I can’t really get the char/cstring. What types of ...
#include <stdio.h> #include <stdlib.h> // Print out the binary value of an integer void binval (int num); int get_number(); main () { int num; num = get_number(); printf("Num = %d\n",num); binval(num); } void binval (int num) { int val = 0; int test; if (!num) { printf("\n"); return; } test = num & 0x...
I notice that small, static, brochure sites would often benefit from adding forms to let users (un)subscribe to an event or mailing list but this means installing some application in the web server referenced in the "action" attribute in HTML forms. To make it easier to install + prevent users from sharing this program, ideally, I'd lik...
Hello, I know that this isn't exactly a programming question, but it's related to the subject for me. How do you denote different numeral systems in just text? (By text I mean able to type at a proper speed and not copy-pasting it from another program.) For example if i have a number in base 2 how do I type it so others can understand th...
Does anyone know if there's an out-of-the box way of storing images directly in the database vs. using ImageField model type that simply uploads it to the MEDIA_ROOT. And if there is, how does one serve those images then? Cheers ...
In the past I've noted terrible performance when querying a varbinary(max) column. Understandable, but it also seems to happen when checking if it's null or not, and I was hoping the engine would instead take some shortcuts. select top 100 * from Files where Content is null I would suspect that it's slow because it's Needing to pul...
What is the result of adding the binary numbers 01000001 and 11111111 on an 8 bit machine? ...
Hi all, I have received a Crash Report from Apple (joy). I understand I can symbolize this report in order to see what is crashing in my code. I understand I need the dSYM and build binary to do this. My question is what are the exact steps I need to follow in xCode to do this ? I have the build folder I submitted via iTunes connect st...
This isn't necessarily a programming question but i'm sure you folks know how to do it. How would i convert floating point numbers into binary. The number i am looking at is 27.625. 27 would be 11011, but what do i do with the .625? ...
Let's say we have a binary file that contains 2 bytes that form an integer, in reverse. So for example, the bytes show like this: (hexadecimal) EB 03 00 00 Which should be interpreted as this: 00 00 03 EB Which C# should be able to input as decimal 1003. Is this possible if you have the EB and 03 bytes already in memory in 2 diffe...
The successor of an element in a BST is the element's successor in the sorted order determined by the inorder traversal. Finding the successor when each node has a pointer to its parent node is presented in CLRS's algorithm textbook. (Intro to algorithm by MIT press). Now I am thinking another question, can we find the successor without ...
I accidentally added, committed and pushed a huge binary file with my very latest commit to a Git repository. How can I make Git remove the object(s) that was/were created for that commit so my .git directory shrinks to a sane size again? Edit: Thanks for your answers; I tried several solutions. None worked. For example the one from Gi...
Hey all, quick question: How does a .NET decimal type get represented in binary in memory? We all know how floating-point numbers are stored and the thusly the reasons for the inaccuracy thereof, but I can't find any information about decimal except the following: Apparently more accurate than floating-point numbers Takes 128 bits of...