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jQuery to loop through elements with the same class
...onial and I want to use jquery to loop through them to check for each div if a specific condition is true. If it is true, it should perform an action.
...
What's a 3D doing in this HTML?
... You should see Content-Transfer-Encoding: quoted-printable in the headers if QP is used.
– Piskvor left the building
Oct 25 '10 at 15:30
176
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Why does sed not replace all occurrences?
If I run this code in bash:
2 Answers
2
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How can I plot separate Pandas DataFrames as subplots?
I have a few Pandas DataFrames sharing the same value scale, but having different columns and indices. When invoking df.plot() , I get separate plot images. what I really want is to have them all in the same plot as subplots, but I'm unfortunately failing to come up with a solution to how and would...
PHP Fatal error: Call to undefined function json_decode()
...of course make sure you restart Apache:
sudo service apache2 restart
Or if you are using PHP-FPM:
sudo service php7.2-fpm restart
(Or php7.1-fpm or php5-fpm)
Explanation
Debian has removed the previous JSON extension as of PHP 5.5rc2 due to a license conflict.
The JSON license has a clause ...
Convert base-2 binary number string to int
...n='11111111')
>>> b.uint
255
Note that the unsigned integer is different from the signed integer:
>>> b.int
-1
The bitstring module isn't a requirement, but it has lots of performant methods for turning input into and from bits into other forms, as well as manipulating them.
...
How to construct a timedelta object from a simple string
...+?)s)?')
def parse_time(time_str):
parts = regex.match(time_str)
if not parts:
return
parts = parts.groupdict()
time_params = {}
for (name, param) in parts.iteritems():
if param:
time_params[name] = int(param)
return timedelta(**time_params)
&g...
What exactly is metaprogramming?
...Graham championed about a decade ago. I'll have to look up some of his specific essays. But the idea is that the program would change another part of the program based on its state. This allows a level of flexibility to make decisions at runtime that is very difficult in most popular languages today...
How to concatenate columns in a Postgres SELECT?
... mean "returns NULL". The result of anything concatenated to NULL is NULL. If NULL values can be involved and the result shall not be NULL, use concat_ws() to concatenate any number of values (Postgres 9.1 or later):
SELECT concat_ws(', ', a, b) AS ab FROM foo;
Or concat() if you don't need separ...
Command line: piping find results to rm
... page,
build and execute command lines from standard input
Note that if file names can contain whitespace characters, you should correct for that:
find -type f -name '*.sql' -mtime +15 -print0 | xargs -0 rm
But actually, find has a shortcut for this: the -delete option:
find -type f -name ...