built-in

if you change native function like this: window.open= function (a,b,c) { alert(2); } then later you can just delete window.open and it would restore original function, BUT: if you change its prototype like this: window.__proto__.open= function (a,b,c) { alert(3); } then delete won't do anything =\ any ideas how to restore it now? When you change window.open to something else, e.g. using window.open = 'something else'; , then you're shadowing the open method from the prototype; // Looking up window.open (in the prototype chain).... window.open; // Found, result == 'something else' window._

In vim, when I hit :wq it is almost always an accident that occurred when attempting to input :w . I would like to disable :wq . The closest I found is cmap , but it has some odd behavior. If I do something like :cmap wq w I can no longer even input :wq ; it just remaps the keystroke sequence wq to w in command mode. Now I cannot, for example, input a search/replace command on a string containing wq . I would just like to alias the exact command :wq to :w or a no-op. Is there a way to do this? EDIT: clarified why :cmap is not an option for me A better solution can be: :cabbrev wq w But I'm not

Does gcc (latest versions: 4.8, 4.9) have an "assume" clause similar to __assume() built-in supported by icc? E.g., __assume( n % 8 == 0 ); In your example you want to inform the compiler that N is a multiple of 8. You can do this simply by inserting the line N = N & 0xFFFFFFF8; in your code (if N is a 32-bit integer). This doesn't change N , because N is a multiple of 8, but since GCC 4.9 the compiler seems to understand that N is a multiple of 8, after this line. This is shown by the next example, in which two float vectors are added: int add_a(float * restrict a, float * restrict b, int N)

Is there a pythonic way to do what the str.strip() method does, except for all occurrences, not just those at the beginning and end of a string? Example: >> '::2012-05-14 18:10:20.856000::'.strip(' -.:') >> '2012-05-14 18:10:20.856000' I want >> '::2012-05-14 18:10:20.856000::'.crazy_function(' -.:') >> '20120514181020856000' Does Python provides me a built-in crazy_function ??? I could easily do it programatically, but I want to know if there is a built-in for that. Couldn't find one. Thank you for your help. Use the translate function to delete the unwanted characters: >>> '::2012-05-14 18

Lets say we have alert method of window object. I would like to enhance it with nice alertbox. Also I want to save the existing alert method so that we can switch back once our application is over. Something like this, but its throwing error in firefox console. window.prototype.alert = function(){ } You can; var base = window.alert; window.alert = function(message) { document.getElementById("myalertwidget").innerHTML = message; return base.apply(this, arguments); }; There is no window.prototype object. window is a global object of javascript context and it is not created from the prototype.

A source of constant headache when tracking down bugs in my Python code are seemingly innocuous snippets like this: list = ['a', 'b', 'c', 'c'] list(set(list)) This fails because I've overwritten the function list() with the variable list. A contrived example obviously, but the point is Python happily lets me overwrite built-in functions with variables. I realise this is a crucial feature in Python but I would quite like it if the interpreter would warn me when I do it in my code as I usually don't mean to do this. Can anyone suggest a solution (other than just being more careful) - as I keep