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Check if Python Package is installed
...n script, just do something like this:
Python 3.3+ use sys.modules and find_spec:
import importlib.util
import sys
# For illustrative purposes.
name = 'itertools'
if name in sys.modules:
print(f"{name!r} already in sys.modules")
elif (spec := importlib.util.find_spec(name)) is not None:
# ...
How to add images in select list?
...
you're right, I got a my.hellobar.com/45874_63207.js not found error & then TypeError: $(...).ddslick is not a function in the Firefox's console
– RousseauAlexandre
Aug 28 '16 at 16:00
...
Why doesn't C have unsigned floats?
...e? -8. But what would that mean in a system without negative numbers. FLOAT_MAX - 8 perhaps? Actually, that doesn't work as FLOAT_MAX - 8 is FLOAT_MAX due to precision effects so things are even more screwy. What if it was part of a more complex expression:
float a = 2.0f, b = 10.0f, c = 20.0f, d =...
Can I call jquery click() to follow an link if I haven't bound an event handler to it with bind
...rt('jQuery.click()');
return true;
});
*/
});
function button_onClick() {
$('#a').click();
}
function a_onClick() {
alert('a_onClick');
}
</script>
</head>
<body>
<input type="button" onclick="button_onClick()">
<br>
<a id='a' href='htt...
What does the “@” symbol do in Powershell?
...stion--to provide the full answer, to wit:
Array sub-expression (see about_arrays)
Forces the value to be an array, even if a singleton or a null, e.g. $a = @(ps | where name -like 'foo')
Hash initializer (see about_hash_tables)
Initializes a hash table with key-value pairs, e.g.
$HashArguments...
How to get a Fragment to remove itself, i.e. its equivalent of finish()?
.... So where exactly i have to remove the fragment
– KK_07k11A0585
Jul 15 '13 at 14:36
6
This answe...
Devise form within a different controller
I am using a devise gem for sign_in/sign_out procedures.
5 Answers
5
...
How to send email attachments?
...t import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mail(send_from, send_to, subject, text, files=None,
server="127.0.0.1"):
assert isinstance(send_to, list)
msg = MIMEMultipart()
msg['From'] = send_from
msg['To'] = COMMASPACE.join(send_to)
...
How to install a plugin in Jenkins manually
...d to configure proxy in Jenkins using Dockerfile.
– 7_R3X
Oct 3 '18 at 11:34
add a comment
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How to get current time and date in C++?
...
In C++ 11 you can use std::chrono::system_clock::now()
Example (copied from en.cppreference.com):
#include <iostream>
#include <chrono>
#include <ctime>
int main()
{
auto start = std::chrono::system_clock::now();
// Some computation ...