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Is right click a Javascript event?
...irefox), WebKit (Safari/Chrome) & Opera
isRightMB = e.which == 3;
else if ("button" in e) // IE, Opera
isRightMB = e.button == 2;
alert("Right mouse button " + (isRightMB ? "" : " was not") + "clicked!");
}
window.oncontextmenu - MDC
...
Find the most common element in a list
...'goose'])
emits:
SL: [('duck', 1), ('duck', 2), ('goose', 0), ('goose', 3)]
item 'duck', count 2, minind 1
item 'goose', count 2, minind 0
goose
As you see, SL is a list of pairs, each pair an item followed by the item's index in the original list (to implement the key condition that, if the "m...
What is the difference between NaN and None?
...= pd.Series([1, None], dtype=object)
s_good = pd.Series([1, np.nan])
In [13]: s_bad.dtype
Out[13]: dtype('O')
In [14]: s_good.dtype
Out[14]: dtype('float64')
Jeff comments (below) on this:
np.nan allows for vectorized operations; its a float value, while None, by definition, forces object ty...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...|
edited Jun 25 '19 at 16:31
answered Aug 19 '13 at 10:02
u...
Rails migrations: Undo default setting for a column
...
387
Rails 5+
def change
change_column_default( :table_name, :column_name, from: nil, to: fals...
How can I safely create a nested directory?
...
On Python ≥ 3.5, use pathlib.Path.mkdir:
from pathlib import Path
Path("/my/directory").mkdir(parents=True, exist_ok=True)
For older versions of Python, I see two answers with good qualities, each with a small flaw, so I will give my ...
How are multi-dimensional arrays formatted in memory?
...eter, bad things are going to happen. Here's a quick example:
int array1[3][2] = {{0, 1}, {2, 3}, {4, 5}};
In memory looks like this:
0 1 2 3 4 5
exactly the same as:
int array2[6] = { 0, 1, 2, 3, 4, 5 };
But if you try to pass array1 to this function:
void function1(int **a);
you'll ge...
How to change the port of Tomcat from 8080 to 80?
...connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
3) Change the port=8080 value to port=80
4) Save file.
5) Stop your Tomcat and restart it.
share
|
improve this...
std::vector versus std::array in C++
...
326
std::vector is a template class that encapsulate a dynamic array1, stored in the heap, that gr...
Extract file name from path, no matter what the os/path format
... |
edited Apr 28 '13 at 21:12
answered Dec 5 '11 at 11:45
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