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What is a non-capturing group in regular expressions?
... Group 4: "sectetuer"
...
So, if we apply the substitution string:
$1_$3$2_$4
... over it, we are trying to use the first group, add an underscore, use the third group, then the second group, add another underscore, and then the fourth group. The resulting string would be like the one below....
How to track down log4net problems
...how to tell what's going on on the inside. For example, I've got a console appender and a database appender in my project. I made a few changes to the database and the code, and now the database appender doesn't work anymore. I'll figure out why eventually, but it would help a lot if I could see wha...
Asynchronous Process inside a javascript for loop [duplicate]
...ForumPost&subject=Demo' + i + '&message=Here%20is%20the%20Demo&_charset_=UTF-8';
http.open('POST', url, true);
http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
http.onreadystatechange = function() {
console.log("Done " + i + "<<<<...
Find the index of a dict within a list, by matching the dict's value
...
tom_index = next((index for (index, d) in enumerate(lst) if d["name"] == "Tom"), None)
# 1
If you need to fetch repeatedly from name, you should index them by name (using a dictionary), this way get operations would be O(1) ti...
SQLAlchemy default DateTime
...olumn, Integer, DateTime
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
class Test(Base):
__tablename__ = 'test'
id = Column(Integer, primary_key=True)
created_date = Column(DateTime, default=datetime.datetime.utcnow)
...
How can I use break or continue within for loop in Twig template?
...n, without much modifications, do the same thing for the {% continue %}.
AppBundle\Twig\AppExtension.php:
namespace AppBundle\Twig;
class AppExtension extends \Twig_Extension
{
function getTokenParsers() {
return array(
new BreakToken(),
);
}
public funct...
How to add a button to PreferenceScreen
...
There is another solution for customizing the appearance of the preferences.
Design a normal XML layout with buttons or whatever you want to add to the standard preferences. Include a ListView in your layout and give it the ID @android:id/list.
Let's say we call the la...
Android - Emulator in landscape mode, screen does not rotate
...tes the screen to landscape orientation but the Android OS and none of the apps rotate. So everything is sitting sideways. Is there something in the AVD configuration that needs to be set in order for the device to rotate properly?
...
How to render a DateTime object in a Twig template
...e date totally different, like extending the \DateTime class, and adding a __toString() method to it that checks the locale and acts accordingly.
Edit:
As pointed out by @Nic in a comment, if you use the Intl extension of Twig, you will have a localizeddate filter available, which shows the date i...
Describe the architecture you use for Java web applications? [closed]
Let's share Java based web application architectures!
10 Answers
10
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