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What is the preferred Bash shebang?
... shebang for any interpreted language on your system such as Perl, Python, PHP (CLI) and many others. By the way, the shebang
#!/bin/sh -
(it can also be two dashes, i.e. --) ends bash options everything after will be treated as filenames and arguments.
Using the env command makes your script p...
pandas GroupBy columns with NaN (missing) values
..._agg[agg_col_order]
Note that you can now simply do the following:
data_block = [np.tile([None, 'A'], 3),
np.repeat(['B', 'C'], 3),
[1] * (2 * 3)]
col_names = ['col_a', 'col_b', 'value']
test_df = pd.DataFrame(data_block, index=col_names).T
grouped_df = safe_groupby...
Better way to revert to a previous SVN revision of a file?
...f: How to Roll Back Changes using Subversion - Jacob Wright – Flex, AIR, PHP, etc.
EDIT: ... and apparently, the exactly same effect as svn merge -r HEAD:851 l3toks.dtx, can be achieved with:
svn export -r 851 l3toks.dtx
A l3toks.dtx
Export complete.
...
On Duplicate Key Update same as insert
...lue pairs by using SET instead of (a,b,c) VALUES(a,b,c).
An example with PHP:
$pairs = "a=$a,b=$b,c=$c";
$query = "INSERT INTO $table SET $pairs ON DUPLICATE KEY UPDATE $pairs";
Example table:
CREATE TABLE IF NOT EXISTS `tester` (
`a` int(11) NOT NULL,
`b` varchar(50) NOT NULL,
`c` text ...
Normal arguments vs. keyword arguments
...ed Sep 13 '09 at 23:58
too much phptoo much php
78.8k3333 gold badges120120 silver badges133133 bronze badges
...
decorators in the python standard lib (@deprecated specifically)
... # The @deprecated is used with a 'reason'.
#
# .. code-block:: python
#
# @deprecated("please, use another function")
# def old_function(x, y):
# pass
def decorator(func1):
if inspect.isclass(func1):
...
Programmatically access currency exchange rates [closed]
... sure it's far from the most elegant way to do this, but I'm pretty new to PHP. Hope it helps!
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Why doesn't String switch statement support a null case?
...ordinal begin at 0 due to which they couldn't support null value in switch block and later with String they decided to forced the same philosophy i.e. null value not allowed in switch block.
TL;DR With String they could have take care of NPE (caused by attempt to generate hashcode for null) while i...
Can I set background image and opacity in the same property?
...n {
position: relative;
}
#main:after {
content : "";
display: block;
position: absolute;
top: 0;
left: 0;
background-image: url(/wp-content/uploads/2010/11/tandem.jpg);
width: 100%;
height: 100%;
opacity : 0.2;
z-index: -1;
}
...
How to trick an application into thinking its stdout is a terminal, not a pipe
...
I don't know if it's doable from PHP, but if you really need the child process to see a TTY, you can create a PTY.
In C:
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>
#include <pty.h>
int ma...