vonnenaut / rot13.md

Last active August 17, 2020 14:53

Rot13

function processCharacter(char, charCode) {
  let newChar = '';

  if (char.match(/[A-Z]/)) {
    if (charCode > 90) {
      charCode -= 26;
    }
    newChar = String.fromCharCode(charCode);
  } else if (char.match(/[a-z]/)) {

vonnenaut / c_programming.md

Last active December 7, 2021 16:38

C

C is pass-by-value but pointers can be used for pass-by-reference parameterization
C has 4 types of scope:
- file (declaration outside any block or parameter list)
- block (inside block or parameter list)
- function prototype (within list of parameter declarations within a function prototype)
- function (between curly brackets of a function definition)
objects have four available storage durations, i.e., lifetimes: automatic (block scope), static (file scope, or block scope when using static specifier), thread (in concurrent programming) and allocated (dynamically allocated memory)

vonnenaut / api.md

Last active December 15, 2020 06:34

APIs

Setup

NOTE: Forget XAMPP for now, too much trouble getting it to work on Ubuntu. Just use Rails with an installed local PostgreSQL db.

Use XAMPP or Node's live-server as part of your development environment.

XAMPP on Ubuntu

https://askubuntu.com/questions/890818/ubuntu-16-04-how-to-start-xampp-control-panel

vonnenaut / clion.md

Created August 12, 2020 03:58

CLion

https://resources.jetbrains.com/storage/products/clion/docs/CLion_ReferenceCard.pdf?_ga=2.227450781.147269905.1597148100-1640827879.1597148100

vonnenaut / chrome_dev_tools.md

Last active August 10, 2020 08:13

Chrome Developer Tools

Breakpoints

https://developers.google.com/web/tools/chrome-devtools/javascript/breakpoints#loc

Add a line of debugger; anywhere in your code to create a breakpoint when running it with Chrome Developer Tools; this is similar to clicking a line number inside Chrome Dev Tools itself.
Add a conditional breakpoint by riht-clicking the line and 'add conditional breakpoint', enter a condition and press enter
use the Breakpoints pane to manage existing breakpoints, including disabling or removing them
use DOM change breakpoints to pause on the code that changes a DOM node or its children
use XHR breakpoints to break when the request URL of an XHR contains a specified string

vonnenaut / interviewing.md

Last active May 21, 2021 08:37

interviewing

Interview Preparation

BUD Optimization

Check for and eliminate:

Bottlenecks
Unnecessary Work
Duplicated Work

vonnenaut / ssh.md

Last active June 5, 2021 04:28

SSH

https://www.digitalocean.com/docs/droplets/how-to/connect-with-ssh/

See Also: CentOS Hardening (https://wiki.centos.org/HowTos/OS_Protection)

https://www.digitalocean.com/docs/droplets/how-to/connect-with-ssh/openssh/

after making changes to ssh configuration, always restart the service: service sshd restart

vonnenaut / vscode.md

Last active August 11, 2021 08:49

Visual Studio Code

Shortcuts

Key(s)	Description
ctrl + shift + spacebar	show signature options pop up while writing a call to a built-in method
ctrl + shift + p	command palette
F5	Start debugging
ctrl + F5	run without debugging
alt + z	toggle word wrap

vonnenaut / ds_algo.md

Last active July 28, 2020 02:28

Data Structures and Algorithms

Binary Search

(divide and conquer algorithm)

Bsearch(List, left, right, search_term)

initially: left = 0 r = n-1

vonnenaut / python.md

Last active June 19, 2021 09:37

Python

type python to enter interactive prompt and test things out/remember
PEP-8 style guide: https://www.python.org/dev/peps/pep-0008/
type import this into interactive prompt for philosophy

Data types

integer, float, string, boolean
lists, dictionaries, sets, frozen sets, tuples, byte, bytearray

Dan vonnenaut

C