Shawn X laoshaw

The right way to override any highlighting if you don't want to edit the colorscheme file directly

Generalities first

Suppose you have weird taste and you absolutely want:

your visual selection to always have a green background and black foreground,
your active statusline to always have a white background and red foreground,
your very own deep blue background.

ARM’s Scalable Vector Extensions: A Critical Look at SVE2 For Integer Workloads

Scalable Vector Extensions (SVE) is ARM’s latest SIMD extension to their instruction set, which was announced back in 2016. A follow-up SVE2 extension was announced in 2019, designed to incorporate all functionality from ARM’s current primary SIMD extension, NEON (aka ASIMD).

Despite being announced 5 years ago, there is currently no generally available CPU which supports any form of SVE (which excludes the [Fugaku supercomputer](https://www.fujitsu.com/global/about/innovation/

C99 List of Undefined Behavior

From N1256: (See http://port70.net/~nsz/c/c99/n1256.html#J.2)

A "shall" or "shall not" requirement that appears outside of a constraint is violated (clause 4).
A nonempty source file does not end in a new-line character which is not immediately preceded by a backslash character or ends in a partial preprocessing token or comment (5.1.1.2).
Token concatenation produces a character sequence matching the syntax of a universal character name (5.1.1.2).
A program in a hosted environment does not define a function named main using one of the specified forms (5.1.2.2.1).
A character not in the basic source character set is encountered in a source file, except in an identifier, a character constant, a string literal, a header name, a comment, or a preprocessing token that is never converted to a token (5.2.1).
An identifier, comment, string literal, character constant, or header name contains an invalid multibyte character or does not

Standard C Code (STD)

0 - Memory Allocation
1 - Arrays
2 - Pointer Basics
2 - Same code to ASM via godbolt/GCC
3 - C-Bits Bitwise Operators and binary operations.

Learn about Bit Order | Endianess (MSB/LSB) https://github.com/Acry/Byte_Drawer

This script modifies the Haserl 0.9.29 distribution so it works with LuaJIT 2.0 as well as Lua 5.1. The script takes a single argument that is the path to a LuaJIT / Lua distribution directory in which library and executable files have been built. A typical usage is

    ./build-haserl-luajit.sh /usr/local/src/LuaJIT-2.0.0/

The script patches configure.ac, builds Haserl, and executes a CGI script to verify that LuaJIT / Lua is working within Haserl.

The LuaJIT distribution builds both .so and .a libraries; this script always uses the .a library so the Haserl executable contains an embedded copy of LuaJIT. If you prefer to link dynamically to LuaJIT, modify the script to change

    [ LIBS="-Wl,-Bstatic -l$LUALIB -Wl,-Bdynamic $LIBS" ]

Svelte cheatsheet

Doc examples

Automating SSH with Putty (Windows)

Putty is a tool which can be used for various purposes, including communicating with a Linux computer using SSH (Secure SHell) from a Windows computer. Given the username, hostname, and password of a Linux machine which is to be SSHed into, Putty can be automated from the command line as follows (assuming Putty is on the Windows path):

putty -ssh username@hostname -pw password

If the same user on the same Linux machine is to be accessed repeatedly, this command can be automated in Windows by creating a shortcut as follows:

Right click on the desktop/explorer

Bitbake Cheatsheet

Verbose as possible

bitbake -vDDD your-recipe

List recipes

bitbake -s

CGI samples

CGI Variables

Standard set of Common Gateway Interface environment variable are described in RFC3875. For example:

CONTENT_TYPE=application/x-www-form-urlencoded
GATEWAY_INTERFACE=CGI/1.1
REMOTE_ADDR=192.168.1.180
QUERY_STRING=Zbr=1234567&SrceMB=&ime=jhkjhlkh+klhlkjhlk+%A9%D0%C6%AE%C6%AE&prezime=&sektor=OP
REMOTE_PORT=2292

	// -- coding:utf-8; mode:c++; mode:auto-fill; fill-column:80; --

	/// @file color.hpp
	/// @brief Output stream manipulators to add ANSI console colors.
	/// @author J. Arrieta <[email protected]>
	/// @date March 14, 2017
	/// @copyright (c) 2017 Nabla Zero Labs
	///
	/// This code is released under The MIT License
	///