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What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
I want to reverse the changes from one of my checkins. In the right-click context menu of the particular changelist, there are these two options:
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Creating a range of dates in Python
...create a list of dates, starting with today, and going back an arbitrary number of days, say, in my example 100 days. Is there a better way to do it than this?
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Why can't enum's constructor access static fields?
Why can't enum's constructor access static fields and methods? This is perfectly valid with a class, but is not allowed with an enum.
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When do I need to use AtomicBoolean in Java?
How I can use AtomicBoolean and what is that class for?
5 Answers
5
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Understanding $.proxy() in jQuery
From docs I understand that .proxy() would change the scope of the function passed as an argument. Could someone please explain me this better? Why should we do this?
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How to display unique records from a has_many through relationship?
I'm wondering what is the best way to display unique records from a has_many, through relationship in Rails3.
4 Answers
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Modifying a query string without reloading the page
I am creating a photo gallery, and would like to be able to change the query string and title when the photos are browsed.
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Converting JSON String to Dictionary Not List
I am trying to pass in a JSON file and convert the data into a dictionary.
6 Answers
6...
Percentage Height HTML 5/CSS
I am trying to set a <div> to a certain percentage height in CSS, but it just remains the same size as the content inside it. When I remove the HTML 5 <!DOCTYTPE html> however, it works, the <div> taking up the whole page as desired. I want the page to validate, so what shoul...
What's the (hidden) cost of Scala's lazy val?
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This is taken from the scala mailing list and gives implementation details of lazy in terms of Java code (rather than bytecode):
class LazyTest {
lazy val msg = "Lazy"
}
is compiled to something equivalent to the following Java code:
cl...