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How to communicate between iframe and the parent site?
...n fact, MDN says - "Always provide a specific targetOrigin, not *, if you know where the other window's document should be located. Failing to provide a specific target discloses the data you send to any interested malicious site."
– rodiwa
Oct 29 '15 at 8:14
...
How does MySQL process ORDER BY and LIMIT in a query?
... we are not satisfied with that, so we ask mysql to sort it one more time. Now we have the newest result on the last row.
select t.article
from
(select article, publish_date
from table1
order by publish_date desc limit 10) t
order by t.publish_date asc;
If you need all columns,...
string.charAt(x) or string[x]?
...
Bracket notation now works on all major browsers, except for IE7 and below.
// Bracket Notation
"Test String1"[6]
// charAt Implementation
"Test String1".charAt(6)
It used to be a bad idea to use brackets, for these reasons (Source):
...
Class method differences in Python: bound, unbound and static
...f a class, cf. this question) to not create bound methods for method_two.
Now, you can invoke static method both on an instance or on the class directly:
>>> a_test = Test()
>>> a_test.method_one()
Called method_one
>>> a_test.method_two()
Called method_two
>>> ...
Print current call stack from a method in Python code
...original question, which is how to print the current stack ("where you are now" as opposed to "where your code was when the last exception went off, if any".)
– Tom Swirly
Feb 27 '13 at 22:42
...
How to prevent page scrolling when scrolling a DIV element?
...;& e.preventDefault();
});
Inside the event handler, you'll need to know:
scrolling direction
d = e.originalEvent.deltaY, dir = d < 0 ? 'up' : 'down'
because a positive number means scrolling down
scroll position
scrollTop for top, scrollHeight - scrollTop - offsetHeight for bottom
If y...
Saving an Object (Data persistence)
...med _pickle, but doing this is no longer necessary since the pickle module now does it automatically—see What difference between pickle and _pickle in python 3?.
The rundown is you could use something like the following to ensure that your code will always use the C version when it's available in...
Dictionary vs Object - which is more efficient and why?
...d):
def timed(*args, **kw):
global RESULT
s = datetime.now()
RESULT = method(*args, **kw)
e = datetime.now()
sizeMb = process.memory_info().rss / 1024 / 1024
sizeMbStr = "{0:,}".format(round(sizeMb, 2))
print('Time Taken = %s, \t%s, \tSiz...
Declaring abstract method in TypeScript
...e property is marked as protected. This was added in TypeScript 1.3 and is now firmly established.
The makeSound method is marked as abstract, as is the class. You cannot directly instantiate an Animal now, because it is abstract. This is part of TypeScript 1.6, which is now officially live.
abstr...
“The given path's format is not supported.”
...
Got an error now:Error 4 A using namespace directive can only be applied to namespaces; 'System.IO.Path' is a type not a namespace
– All Blond
Sep 8 '11 at 13:32
...