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Parsing command-line arguments in C?
...parse command line arguments in C are:
Getopt (#include <unistd.h> from the POSIX C Library), which can solve simple argument parsing tasks. If you're a bit familiar with bash, the getopt built-in of bash is based on Getopt from the GNU libc.
Argp (#include <argp.h> from the GNU C Libr...
How do I save a stream to a file in C#?
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If this input stream is got from http connection then will it buffer and download and then write all the bytes from the source?????
– dbw
Jan 4 '14 at 14:16
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How do I get Month and Date of JavaScript in 2 digit format?
...he 4 digit year and doesn't require padStart.
getMonth() returns the month from 0 to 11.
1 is added to the month before padding to keep it 1 to 12
getDate() returns the day from 1 to 31.
the 7th day will return 07 and so we do not need to add 1 before padding the string.
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C# Regex for Guid
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For C# .Net to find and replace any guid looking string from the given text,
Use this RegEx:
[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a-fA-F0-9]{12}[})]?
Example C# code:
var result = Regex.Replace(
source,
@"[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a...
How to make the tab character 4 spaces instead of 8 spaces in nano?
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I'm using mint and when I set tabsize from 8 to 4 in /etc/nanorc and go back to the file, I'm still getting 8 spaces in the tab, I even tried to copy that nanorc file to ~/. but that doesn't work, closed and reopened terminal, but still I can't get 4 spaces on th...
Forward host port to docker container
...7.42.1). After that, you should be able to open connections to 172.17.42.1 from within your containers.
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What does iota of std::iota stand for?
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From the original SGI STL documentation:
The name iota is taken from the programming language APL.
In his Turing Award lecture, Ken Iverson (inventor of APL) said this:
For example, the integer function denoted by ...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...n they're not as fast :)
Options
Low Memory (32-bit int, 32-bit machine)(from here):
unsigned int
reverse(register unsigned int x)
{
x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1));
x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2));
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What's the Android ADB shell “dumpsys” tool and what are its benefits?
...application
affects the overall device!
What information can we retrieve from dumpsys shell command and how we can use it
If you run dumpsys you would see a ton of system information. But you can use only separate parts of this big dump.
to see all of the "subcommands" of dumpsys do:
dumpsys | ...
Get path from open file in Python
...h is still the correct file path. If I specify the filename as 'text.txt' from directory '~/Documents/' and then change directories to '~/', os.path.realpath will return '~/text.txt' instead of '~/Documents/text.txt'.
– K. Nielson
Jan 16 '19 at 21:08
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