xieyunzi

ldd path/bin
objdump -p path/bin | grep NEEDED
readelf -d path/bin | grep NEEDED

https://stackoverflow.com/questions/10052041/how-to-list-library-dependencies-of-a-non-native-binary https://en.wikipedia.org/wiki/Ldd_(Unix)

xieyunzi

https://github.com/nindalf/nindalf.github.io/blob/master/hugo/content/post/how-goroutines-work.md

+++ date = "2015-01-08T08:36:54-07:00" draft = false title = "How Goroutines Work" +++

###Introduction to Go

xieyunzi

const copyToClipboard = str => {
  const el = document.createElement('textarea');  // Create a <textarea> element
  el.value = str;                                 // Set its value to the string that you want copied
  el.setAttribute('readonly', '');                // Make it readonly to be tamper-proof
  el.style.position = 'absolute';                 
  el.style.left = '-9999px';                      // Move outside the screen to make it invisible
  document.body.appendChild(el);                  // Append the <textarea> element to the HTML document
  const selected =            
    document.getSelection().rangeCount > 0        // Check if there is any content selected previously
      ? document.getSelection().getRangeAt(0)     // Store selection if found

xieyunzi

(defn- invoke-private-method
  [obj fn-name-string & args]
  (let [m (first (filter (fn [x] (.. x getName (equals fn-name-string)))
                         (.. obj getClass getDeclaredMethods)))]
    (. m (setAccessible true))
    (. m (invoke obj (into-array Object args)))))

(defn- invoke-static-method
  [klass fn-name-string & args]
  (let [m (first (filter (fn [x] (.. x getName (equals fn-name-string)))

xieyunzi

var el = document.querySelector("div[class^=viewport-]"); el.scrollTop = (el.scrollTop + el.clientHeight - 40);

xieyunzi

(defmacro def-test
  [name args & body]
  `(defn ~name ~args
     (let [[params#] ~args
           parsed-args# (parse-args params#)
           new-param-data# (merge parsed-args# {:uuid "0efecd84-bba0-4a95-a6dd-a3c3f7071057"})
           new-params# (merge params# {:as new-param-data#})
           ]
       (str ~name ", " ~args ", parsed: " parsed-args# ", new-args: " new-params#)
       )))

xieyunzi

Use script /tmp/output to start recording in a new shell, then type your commands and look in the /tmp/output file, e.g. with an editor or cat -vet. Type exit to the shell to exit the recording.

xieyunzi

Lisp interpreter in 90 lines of C++

I've enjoyed reading Peter Norvig's recent articles on Lisp. He implements a Scheme interpreter in 90 lines of Python in the first, and develops it further in the second.

Just for fun I wondered if I could write one in C++. My goals would be

1. A Lisp interpreter that would complete Peter's Lis.py test cases correctly...
2. ...in no more than 90 lines of C++.

Although I've been thinking about this for a few weeks, as I write this I have not written a line of the code. I'm pretty sure I will achieve 1, and 2 will be... a piece of cake!

xieyunzi

#!/usr/bin/env emacs --script

;; https://www.lunaryorn.com/posts/emacs-script-pitfalls 

(message "Hello world")
(message "%S" (/ 30 4))

xieyunzi

// inplace merge sort
// http://thomas.baudel.name/Visualisation/VisuTri/inplacestablesort.html
(function () {
  "use strict";

  var floor = Math.floor;

  function lower(a, from, to, value, compare) {
    while (to > from) {
      var middle = from + floor((to - from) / 2);