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Sample settings.xml for maven
...mirrors
| This is a list of mirrors to be used in downloading artifacts from remote
| repositories.
|
| It works like this: a POM may declare a repository to use in resolving
| certain artifacts. However, this repository may have problems with heavy
| traffic at times, so people ha...
I have 2 dates in PHP, how can I run a foreach loop to go through all of those days?
...-01');
$end = new DateTime('2010-05-10');
$interval = DateInterval::createFromDateString('1 day');
$period = new DatePeriod($begin, $interval, $end);
foreach ($period as $dt) {
echo $dt->format("l Y-m-d H:i:s\n");
}
This will output all days in the defined period between $start and $end. ...
Append values to a set in Python
...dd to append single values
a.add(1)
a.add(2)
Use update to add elements from tuples, sets, lists or frozen-sets
a.update([3,4])
>> print(a)
{1, 2, 3, 4}
If you want to add a tuple or frozen-set itself, use add
a.add((5, 6))
>> print(a)
{1, 2, 3, 4, (5, 6)}
Note: Since set elem...
Replace a value if null or undefined in JavaScript
...le on JavaScript, though browser support is limited. According to the data from caniuse, only 48.34% of browsers are supported (as of April 2020).
According to the documentation,
The nullish coalescing operator (??) is a logical operator that
returns its right-hand side operand when its left...
Selenium c# Webdriver: Wait Until Element is Present
...can use implicit wait:
driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);
An implicit wait is to tell WebDriver to poll the DOM for a certain
amount of time when trying to find an element or elements if they are
not immediately available. The default setting is 0. Once set...
Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/PO
...in the case of character, it runs strptime first, then does the conversion from POSIXlt to POSIXct.
It makes sense that strptime is faster, because strptime only handles character input whilst the others try to determine which method to use from input type. It should also be a bit safer in that bei...
Difference between Django's annotate and aggregate methods?
...
I would focus on the example queries rather than your quote from the documentation. Aggregate calculates values for the entire queryset. Annotate calculates summary values for each item in the queryset.
Aggregation
>>> Book.objects.aggregate(average_price=Avg('price'))
{'av...
Is there a Unix utility to prepend timestamps to stdin?
...
ts from moreutils will prepend a timestamp to every line of input you give it. You can format it using strftime too.
$ echo 'foo bar baz' | ts
Mar 21 18:07:28 foo bar baz
$ echo 'blah blah blah' | ts '%F %T'
2012-03-21 18:07:30...
How do I remove packages installed with Python's easy_install?
...d to rm -rf the egg (it might be a directory) and remove the matching line from site-packages/easy-install.pth
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NTFS performance and large volumes of files and directories
...
Here's some advice from someone with an environment where we have folders containing tens of millions of files.
A folder stores the index information (links to child files & child folder) in an index file. This file will get very large wh...