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What is the basic difference between the Factory and Abstract Factory Design Patterns? [closed]
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Source for this information taken from: http://java.dzone.com/news/intro-design-patterns-abstract
Abstract Factory vs. Factory Method
The methods of an Abstract Factory are implemented as Factory Methods. Both the Abstract Factory Pattern and the Factory Met...
What's the fastest way to merge/join data.frames in R?
..., in fact, they are placed on tables which were overwritten before the sql select ever runs and that, in part, accounts for why its so slow. The idea of sqldf is that the data frames in your R session constitute the data base, not the tables in sqlite. Thus each time the code refers to an unqualif...
Easiest way to upgrade eclipse 3.7 to 4.2 (Juno)
... is basically an "Eclipse without plugins". Run it (on a fresh workspace), select File -> Import -> Installation -> From existing Installation and point the wizard to your existing 3.7 directory. Check "Install latest versions", hit finish.
That will install the latest versions of the plug...
C# Linq Group By on multiple columns [duplicate]
... c.School,
c.Friend,
c.FavoriteColor,
} into gcs
select new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
};
var consolidatedChildren =
...
Was PreferenceFragment intentionally excluded from the compatibility package?
... @JustinBuser For the record, Mark did answer my question. That's evident from me accepting his answer.
– James
Sep 26 '12 at 8:05
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Vagrant error : Failed to mount folders in Linux guest
... box and do sudo ln -s /etc/dnf/dnf.conf /etc/yum.conf, as Fedora switched from yum to dnf. With that, things ran to completion (I think!). Thanks @dadaso.
– J.Z.
Mar 18 '16 at 22:37
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Is there a method to generate a UUID with go language
...rectly identify it as version 4. This is done to distinguish random UUIDs from ones generated via other algorithms (e.g. version 1 UUIDs based on your MAC address and time).
share
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When should I use semicolons in SQL Server?
...llowing two queries (copied from this post):
BEGIN TRY
BEGIN TRAN
SELECT 1/0 AS CauseAnException
COMMIT
END TRY
BEGIN CATCH
SELECT ERROR_MESSAGE()
THROW
END CATCH
BEGIN TRY
BEGIN TRAN
SELECT 1/0 AS CauseAnException;
COMMIT
END TRY
BEGIN CATCH
SELECT ERROR_MES...
Dismiss keyboard by touching background of UITableView
...reRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
And the hideKeyboard method might look like this:
- (void) hideKeyboard {
[textField1 resignFirstResponder];
[textField2 resignFirst...
AtomicInteger lazySet vs. set
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Cited straight from "JDK-6275329: Add lazySet methods to atomic classes":
As probably the last little JSR166 follow-up for Mustang,
we added a "lazySet" method to the Atomic classes
(AtomicInteger, AtomicReference, etc). This is a n...