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Studies on optimal code width?
... years now - the printed book. These have evolved over the centuries, with readbility foremost in mind, to the position we are at now where the average line length for text is around 60 characters. So for readability, go for narrower margins.
...
Simple C example of doing an HTTP POST and consuming the response
...rintf */
#include <stdlib.h> /* exit */
#include <unistd.h> /* read, write, close */
#include <string.h> /* memcpy, memset */
#include <sys/socket.h> /* socket, connect */
#include <netinet/in.h> /* struct sockaddr_in, struct sockaddr */
#include <netdb.h> /* stru...
What is the main difference between Inheritance and Polymorphism?
...tion in an end of module open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to this but, none I have ...
Why are C character literals ints instead of chars?
...y says "Would you disagree with this opinion, which was posted in a past thread discussing the issue in question?" ... and b) It is ludicrous, because a char variable is not an int, so making a character constant be one is a special case. And it's easy to use a character value without promoting it: ...
Local file access with JavaScript
...
If the user selects a file via <input type="file">, you can read and process that file using the File API.
Reading or writing arbitrary files is not allowed by design. It's a violation of the sandbox. From Wikipedia -> Javascript -> Security:
JavaScript and the DOM provide ...
What is the fastest way to create a checksum for large files in C#
...
The problem here is that SHA256Managed reads 4096 bytes at a time (inherit from FileStream and override Read(byte[], int, int) to see how much it reads from the filestream), which is too small a buffer for disk IO.
To speed things up (2 minutes for hashing 2 Gb f...
Why does an SSH remote command get fewer environment variables then when run manually? [closed]
...s
startup files. If any of the files exist but cannot be
read, bash reports an error. Tildes are expanded in file
names as described below under Tilde Expansion in the
EXPANSION section.
When bash is invoked as an interactive login shell, or as
...
Reading header data in Ruby on Rails
...ain"
replace "Content-Type" with the name of the header that you want to read.
Update for Rails 4.2
There are 2 ways to get them in Rails 4.2:
Old way (still working):
request.headers["Cookie"]
New way:
request.headers["HTTP_COOKIE"]
To get a Hash with all headers of the request.
reques...
Parse large JSON file in Nodejs
...ave a file which stores many JavaScript objects in JSON form and I need to read the file, create each of the objects, and do something with them (insert them into a db in my case). The JavaScript objects can be represented a format:
...
Convert SVG to PNG in Python
... This is all the code it takes:
with wand.image.Image( blob=svg_file.read(), format="svg" ) as image:
png_image = image.make_blob("png")
I just discovered this today, and felt like it was worth sharing for anyone else who might straggle across this answer as it's been a while since m...