jackrusher

Hofstadter on Lisp

In the mid-80s, while reading through my roommate's collection of Scientific American back issues, I encountered this introduction to Lisp written by Douglas Hofstadter. I found it very charming at the time, and provide it here (somewhat illegally) for the edification of a new generation of Lispers.

In a testament to the timelessness of Lisp, you can still run all the examples below in emacs if you install these aliases:

(defalias 'plus #'+)
(defalias 'quotient #'/)
(defalias 'times #'*)
(defalias 'difference #'-)

pkgw

# PKGW customizations
# Greek ambiguities: epsilon/eta, theta/tau, pi/phi/psi, omega/omicron

<Multi_key> <backslash> <comma> : " " U202F # thin nonbreaking space

<Multi_key> <g> <a> : "α"
<Multi_key> <g> <b> : "β"
<Multi_key> <g> <g> : "γ"
<Multi_key> <g> <d> : "δ"
<Multi_key> <g> <3> : "ε" # note! 

hakunin

# adapted from https://gist.github.com/johdax/771943
# modified to work without creating new String methods
class StringDistance

  def self.damerau_levenshtein(str1, str2)
    d = Array.new(str1.size+1){Array.new(str2.size+1)}
    for i in (0..str1.size)
      d[i][0] = i
    end
    for j in (0..str2.size)

johnmastro

;; An attempt at this Emacs SX question:
;; https://emacs.stackexchange.com/questions/10359/delete-portion-of-isearch-string-that-does-not-match-or-last-char-if-complete-m

(defun isearch-delete-something ()
  "Delete non-matching text or the last character."
  ;; Mostly copied from `isearch-del-char' and Drew's answer on the page above
  (interactive)
  (if (= 0 (length isearch-string))
      (ding)
    (setq isearch-string

magnars

(defun isearch-delete-me ()
  (interactive)
  (delete-char (- (length isearch-string))))

(define-key isearch-mode-map (kbd "<C-backspace>") 'isearch-delete-me)

panathea

This script removes the input length limit which can trip up Plover users.

Simply install the script into TamperMonkey (Chrome) or GreaseMonkey (Firefox) and get racing.

The script was created by community member nimble

rnwolf

spacemacs-keybindings

Ref: https://gist.github.com/rnwolf/e09ae9ad6d3ac759767d129d52cab1f1

Key Binding	Description
SPC	< space >
RET	< return >
C	< ctrl >
M	< alt >, M stands for Meta

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

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

philipashlock

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");


/* Adapted from https://www.reddit.com/r/FirefoxCSS/comments/ao3ydl/configuring_firefox_for_tree_style_tab_usage/ */

/* hide native tabs and sidebar header */
#TabsToolbar-customization-target {
  visibility: collapse;
}

jyn514

(I plan to publish this as a blog post once a few people have looked at it and caught the obvious typos.)

I got lots of positive feedback about the FAQ section in my Rust 2020 blog post, so I'm trying that format again for another topic that's been requested a lot: How to fix common borrow-checker issues. This isn't meant to explain how or why the borrow checker works the way it does (see The Nomicon or Two Beautiful Rust Programs for that), just how to work around some of its current limitations.