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jQuery Plugin: Adding Callback functionality
... var options = $.extend({
callback: function() {}
}, arguments[0] || {});
// call the callback and apply the scope:
options.callback.call(this);
};
Use it like this:
$('.elem').myPlugin({
callback: function() {
// some action
}
});
...
Immutable vs Mutable types
...
What? Floats are immutable? But can't I do
x = 5.0
x += 7.0
print x # 12.0
Doesn't that "mut" x?
Well you agree strings are immutable right? But you can do the same thing.
s = 'foo'
s += 'bar'
print s # foobar
The value of the variable changes, but it changes by chang...
How do I calculate the normal vector of a line segment?
...
answered Aug 7 '09 at 8:49
Oren TrutnerOren Trutner
22k77 gold badges5050 silver badges5555 bronze badges
...
In JavaScript, is returning out of a switch statement considered a better practice than using break?
...
10
@Mark Costello's answer made me thank a bit more about your question. I think you're looking for a general "best practice" guideline, but i...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
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answered Jan 23 '12 at 0:18
nicolaskruchtennicolaskruchten
20k77 gold badges5858 silver badges8080 bronze badges
...
How does grep run so fast?
...omparison
# (everything is in the buffer cache)
$ time grep -c 'tg=f_c' 20140910.log
28
0.168u 0.068s 0:00.26
$ time grep -c ' /cc/merchant.json tg=f_c' 20140910.log
28
0.100u 0.056s 0:00.17
The longer form is 35% faster!
How come? Boyer-Moore consructs a skip-forward table from the pattern-st...
Check a collection size with JSTL
...
<c:if test="${companies.size() > 0}">
</c:if>
This syntax works only in EL 2.2 or newer (Servlet 3.0 / JSP 2.2 or newer). If you're facing a XML parsing error because you're using JSPX or Facelets instead of JSP, then use gt instead of >.
<c...
python numpy ValueError: operands could not be broadcast together with shapes
...
user2357112 supports Monica
200k2020 gold badges287287 silver badges373373 bronze badges
answered Jul 3 '14 at 22:08
DrVDrV
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MySQL - Get row number on select
...
Take a look at this.
Change your query to:
SET @rank=0;
SELECT @rank:=@rank+1 AS rank, itemID, COUNT(*) as ordercount
FROM orders
GROUP BY itemID
ORDER BY ordercount DESC;
SELECT @rank;
The last select is your count.
...
Is there an alternative to string.Replace that is case-insensitive?
...
From MSDN
$0 - "Substitutes the last substring matched by group number number (decimal)."
In .NET Regular expressions group 0 is always the entire match. For a literal $ you need to
string value = Regex.Replace("%PolicyAmount%", "%Pol...