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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
...
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...
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...
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...
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
...
Can I restore deleted files (undo a `git clean -fdx`)?
...
132
No. Those files are gone.
(Just checked on Linux: git clean calls unlink(), and does not backu...