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Extract substring using regexp in plain bash
...
If your string is
foo="US/Central - 10:26 PM (CST)"
then
echo "${foo}" | cut -d ' ' -f3
will do the job.
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How do you remove a Cookie in a Java Servlet
...l still see that cookie passed on the request. E.g. if the url is "http://foo.bar.com/baz/index.html", you'll see any cookies defined on bar.com or foo.bar.com, or with a path of "/" or "/baz".
Thus, what you have looks like it should work, as long as there's only one cookie defined in the client,...
How to duplicate a git repository? (without forking)
...duplicate, you need to perform both a bare-clone and a mirror-push:
mkdir foo; cd foo
# move to a scratch dir
git clone --bare https://github.com/exampleuser/old-repository.git
# Make a bare clone of the repository
cd old-repository.git
git push --mirror https://github.com/exampleuser/new-reposi...
C#: Abstract classes need to implement interfaces?
...ss, you simply define those members with the abstract keyword:
interface IFoo
{
void Bar();
}
abstract class Foo : IFoo
{
public abstract void Bar();
}
Or to put it another way: you don't have to "implement" it (which would be a terrible limitation on abstract classes); however, in C#, y...
Django admin: how to sort by one of the custom list_display fields that has no database field
...y_set().annotate(models.Count('order'))
class Customer(models.Model):
foo = models.CharField[...]
objects = CustomerManager()
def number_of_orders(self):
return u'%s' % Order.objects.filter(customer=self).count()
number_of_orders.admin_order_field = 'order__count'
EDIT: ...
How to send POST request?
...rl = 'https://httpbin.org/post' # Set destination URL here
post_fields = {'foo': 'bar'} # Set POST fields here
request = Request(url, urlencode(post_fields).encode())
json = urlopen(request).read().decode()
print(json)
Sample output:
{
"args": {},
"data": "",
"files": {},
"form": ...
Hibernate Annotations - Which is better, field or property access?
...ion goodness to inherit into 8 concrete subclasses:
public abstract class Foo<T extends Bar> {
T oneThing;
T anotherThing;
// getters and setters ommited for brevity
// Lots and lots of implementation regarding oneThing and anotherThing here
}
Now exactly how should you ...
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有语句执行，就不要写这个else。
还要注意，sh里的if [ $foo -eq 0 ]，这个方括号跟Java/PHP里if后面的圆括号大不相同，它是一个可执行程序（和cd, ls, grep一样），相不到吧？在CentOS上，它在/usr/bin目录下：
ll /usr/bin/[
-rwxr-xr-x. 1 ro...
How do I specify a single test in a file with nosetests?
...ested by attrib do not exist in a segregated space. So if you test with -a foo and your class contains foo = "platypus", then all tests in the class will be selected by the plugin.
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Random “Element is no longer attached to the DOM” StaleElementReferenceException
...er the following scenario:
WebElement element = driver.findElement(By.id("foo"));
// DOM changes - page is refreshed, or element is removed and re-added
element.click();
Now at the point where you're clicking the element, the element reference is no longer valid. It's close to impossible for WebD...