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Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
...nchronized method over the block.
Perhaps the only one ( but I wouldn't call it an advantage ) is you don't need to include the object reference this.
Method:
public synchronized void method() { // blocks "this" from here....
...
...
...
} // to here
Block:
public void method() {...
Formatting Numbers by padding with leading zeros in SQL Server
...zeroes, just assign or convert to an int and they will be removed automatically.
– Jimbo
Mar 1 '12 at 17:25
2
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Why does Math.Round(2.5) return 2 instead of 3?
...lows IEEE Standard 754,
section 4. This kind of rounding is
sometimes called rounding to nearest,
or banker's rounding. It minimizes
rounding errors that result from
consistently rounding a midpoint value
in a single direction.
You can specify how Math.Round should round mid-points usi...
What is the difference between save and export in Docker?
... Docker for a couple of days and I already made some images (which was really fun!). Now I want to persist my work and came to the save and export commands, but I don't fully understand them.
...
Syntax behind sorted(key=lambda: …)
...
key is a function that will be called to transform the collection's items before they are compared. The parameter passed to key must be something that is callable.
The use of lambda creates an anonymous function (which is callable). In the case of sorted ...
MySQL join with where clause
...s the subset of user_category_subscriptions with a user_id of 1 to join to all of the rows in categories. This will give you all of the rows in categories, while only the categories that this particular user has subscribed to will have any information in the user_category_subscriptions columns. Of c...
Which version of the git file will be finally used: LOCAL, BASE or REMOTE?
When there's a collison during git merge , I open a mergetool called Meld . It opens three files LOCAL, BASE and REMOTE. As I've read LOCAL is my local branch, BASE is common ancestor and REMOTE is the branch to be merged.
...
Difference between Inheritance and Composition
... is now considered a blunder. A stack "is-NOT-a" vector; you should not be allowed to insert and remove elements arbitrarily. It should've been composition instead.
Unfortunately it's too late to rectify this design mistake, since changing the inheritance hierarchy now would break compatibility wit...
'Missing contentDescription attribute on image' in XML
...heir devices more easily, including text-to-speech,
haptic feedback, trackball and D-pad navigation that augments their
experience. Android application developers can take advantage of these
services to make their applications more accessible and also build
their own accessibility services.
This gu...
advantage of tap method in ruby
...= User.new
user.username = "foobar"
user.save!
they would have to follow all the three lines and then recognize that it is just creating an instance named user.
If it were:
user = User.new.tap do |u|
u.username = "foobar"
u.save!
end
then that would be immediately clear. A reader would not...