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How can I pad a String in Java?
...at — as others have mentioned and demonstrated in this answer — String.format() and the Formatter classes in the JDK are better options. Use them over the commons code.
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PHP: Storing 'objects' inside the $_SESSION
...$_SESSION, or reconstruct them whole cloth based on data stashed in hidden form fields, or re-query them from the DB each time, you are using state. HTTP is stateless (more or less; but see GET vs. PUT) but almost everything anybody cares to do with a web app requires state to be maintained somewhe...
bash assign default value
...ter not set, use default. After the call, parameter is still not set.
Both forms are almost equivalent. The extra : makes a difference only when parameter has been declared, but is null.
unset EGGS
echo 1 ${EGGS-spam} # 1 spam
echo 2 ${EGGS:-spam} # 2 spam
EGGS=
echo 3 ${EGGS-spam} # 3
echo 4...
How to increment a datetime by one day?
...-29T23:59:00-10:00
tomorrow = add_day(today_tz)
return tomorrow.isoformat() == '2011-12-31T23:59:00+14:00'
def test_dst(add_day):
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone('Europe/Berlin')
today_utc = datetime.datetime(2018, 3,...
Oracle Differences between NVL and Coalesce
... union
select null as a from dual
) ;
succeeds.
More information : http://www.plsqlinformation.com/2016/04/difference-between-nvl-and-coalesce-in-oracle.html
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Is there a way to programmatically scroll a scroll view to a specific edit text?
I have a very long activity with a scrollview. It is a form with various fields that the user must fill in. I have a checkbox half way down my form, and when the user checks it I want to scroll to a specific part of the view. Is there any way to scroll to an EditText object (or any other view object...
Stopping scripters from slamming your website
... same page, following every link on a page quickly, or filling in an order form too fast to be human.
If they fail the check x times in a row (say, 2 or 3), give that IP a timeout or other such measure. Then at the end of the timeout, dump them back to the check again.
Since you have unregistere...
When should I use ugettext_lazy?
...there any other places, where I should use ugettext_lazy too? What about form definitions?
Are there any performance diffrences between them?
...
Multiple Models in a single django ModelForm?
Is it possible to have multiple models included in a single ModelForm in django? I am trying to create a profile edit form. So I need to include some fields from the User model and the UserProfile model. Currently I am using 2 forms like this
...
One line if-condition-assignment
...t do that. This style is normally not expected. People prefer the longer form for clarity and consistency.
if someBoolValue:
num1 = 20
(Equally, camel caps should be avoided. So rather use some_bool_value.)
Note that an in-line expression some_value if predicate without an else part does not...