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Handling applicationDidBecomeActive - “How can a view controller respond to the app becoming Active?
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Any class in your application can become an "observer" for different notifications in the appl...
Revert the `--no-site-packages` option with virtualenv
...nvironment.
Where venv is the name of your virtual environment, and python3.4 corresponds to whichever version of python involved, for example:
$ rm venv/lib/python3.4/no-global-site-packages.txt
And if you change your mind and want to put it back:
$ touch venv/lib/python3.4/no-global-site-pack...
Tooltips for cells in HTML table (no Javascript)
... here on Firefox v 18 (Aurora), Internet Explorer 8 & Google Chrome v 23x
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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
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E.g. [a]{2} matches two consecutive lower case letter a: aa
E.g. [a]{1,3} matches at least one and up to three lower case letter a, aa, aaa
+ Match at least one, or more, of the pattern defined before it.
E.g. a+ will match consecutive a's a, aa, aaa, and so on
? Match zero or...
Best way to pretty print a hash
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answered Jan 12 '12 at 21:35
PhrogzPhrogz
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Emacs - Multiple columns one buffer
...ame with just one window, split it into two side-by-side windows using C-x 3, and then type M-x follow-mode. From then on, you can edit the buffer in either of the two windows, or scroll either one; the other window follows it.
In Follow mode, if you move point outside the portion visible in one wi...
Check if object value exists within a Javascript array of objects and if not add a new object to arr
...nst arr = [{ id: 1, username: 'fred' }, { id: 2, username: 'bill' }, { id: 3, username: 'ted' }];
function add(arr, name) {
const { length } = arr;
const id = length + 1;
const found = arr.some(el => el.username === name);
if (!found) arr.push({ id, username: name });
return arr...
Html code as IFRAME source rather than a URL
...></html>
can be encoded as this:
data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3Efoo%3C/body%3E%3C/html%3E
and then set as the src attribute of the iframe. Example.
Edit: The other alternative is to do this with Javascript. This is almost certainly the technique I'd choose. You ...
Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
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How do I calculate square root in Python?
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Merlin
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answered Mar 7 '12 at 2:50
smessingsmessin...