Tag: linkedin
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Simple String Extension in Ruby
Based on a blog post from Steve Yegge… #ruby class String def endswith(arg) (self =~ /.*#{arg}$/) != nil end end #to test irb>”extension”.endswith(“ion”)
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Static vs Dynamic Scope
A discussion of static and dynamic scope for variables in programming languages. Emacs lisp is one of the few languages with dynamic scoping and this post takes a look at the difference.
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Arrays as Objects in Javascript
Rhino Prompt… js> a[0] = 1; js> a.print = function () {for(var e in this) print (“a[” + e + “] = ” + a[e]);}; function () { for (var e in this) { print(“a[” + e + “] = ” + a[e]); } } js> a.print(); a[0] = 1 a[print] = function () { […]
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“wc”-like Unix Command in Emacs Lisp
Inspired by reading a Steve Yegge blog post. (require ‘cl) (defsubst wc-whitespace-char? () “is current character whitespace?” (not (looking-at “[A-Za-z0-9]”))) (defun wc-buffer (b) “count words in a buffer” (interactive “bBuffer to Analyze “) (let ((word-count 0) (in-word nil) (char-count 0) (line-count 1)) (save-excursion (set-buffer b) (beginning-of-buffer) (while (not (eobp)) (if in-word (if (wc-whitespace-char?) (setq in-word […]
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Understanding Read-Only Properties with Object (Refererence Types)
using System; using System.Text; namespace TestReadOnly { class Program { static void Main(string[] args) { MyClass1 myObject1 = new MyClass1(); // myObject1.MyObject2 = new MyClass2(); // clearly illegal // legal, reference is read-only, not object myObject1.MyObject2.x = 1; Console.WriteLine(“myObject1.MyObject2.x: {0}”, myObject1.MyObject2.x); // also legal, similar to above, anotherObject2 is just a reference to the same […]