fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

dougallj

# IDA (disassembler) and Hex-Rays (decompiler) plugin for Apple AMX
#
# WIP research. (This was edited to add more info after someone posted it to
# Hacker News. Click "Revisions" to see full changes.)
#
# Copyright (c) 2020 dougallj


# Based on Python port of VMX intrinsics plugin:
# Copyright (c) 2019 w4kfu - Synacktiv

dblalock

/* Allocate aligned memory in a portable way.
 *
 * Memory allocated with aligned alloc *MUST* be freed using aligned_free.
 *
 * @param alignment The number of bytes to which memory must be aligned. This
 *  value *must* be <= 255.
 * @param bytes The number of bytes to allocate.
 * @param zero If true, the returned memory will be zeroed. If false, the
 *  contents of the returned memory are undefined.
 * @returns A pointer to `size` bytes of memory, aligned to an `alignment`-byte

mroderick

How to add an image to a gist

1. Create a gist if you haven't already.
2. Clone your gist:

   # make sure to replace `<hash>` with your gist's hash
   git clone https://gist.github.com/<hash>.git # with https
   git clone git@gist.github.com:<hash>.git     # or with ssh

max-mapper

certik

Two schools

There are two schools how to write numerical code, which in this document we will call the IEEE school and the Fortran school.

One end of the spectrum: no changes in floating point by the compiler, the developer must express exact intent. This is the IEEE school.

On the other end of the spectrum: Developer specifies math, the compiler is

leverich

C PROGRAM TO COMPUTE NODAL FACTORS AND EQUILIBRIUM ARGUEMENTS
C
C
      PARAMETER(NCNST=37)

      CHARACTER CNAME(NCNST)*8
      COMMON /CNSNAM/ CNAME
      REAL NODFAC,MONTH
      DIMENSION NCON(NCNST)
      COMMON /CNST/ NODFAC(NCNST),GRTERM(NCNST),SPEED(NCNST),P(NCNST)

ivan-pi

// compile with g++ -o bisect.cxx poly.o -I<path/to/boost>

#include <cmath>
#include <iostream>

#include <boost/math/tools/roots.hpp>

// Functor providing termination condition
// Determines convergence in x based on if the relative or absolute tolerance are satisfied
template<class T>