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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...ersables don't.
A Traversable has one abstract method: foreach. When you call foreach, the collection will feed the passed function all the elements it keeps, one after the other.
On the other hand, an Iterable has as abstract method iterator, which returns an Iterator. You can call next on an Ite...
What does MVW stand for?
... considered the ViewModel that is being decorated by a
function that we call a Controller.
Being able to categorize a framework and put it into one of the MV*
buckets has some advantages. It can help developers get more
comfortable with its apis by making it easier to create a mental mode...
Naming convention for utility classes in Java
... you use it consistently. Like, if you have three utility classes and you call them CustomerUtil, ProductUtils, and StoreUtility, other people trying to use your classes are going to constantly get confused and type CustomerUtils by mistake, have to look it up, curse you a few times, etc. (I heard a...
GitHub: Reopening a merged pull request
...l need to add commits to the branch and create a new pull request, copying all the details over and probably providing a link to the original pull request to manually save the history.
Might be a nice feature request for future GitHub.
...
PHP DateTime::modify adding and subtracting months
...s not a bug:
The current behavior is correct. The following happens internally:
+1 month increases the month number (originally 1) by one. This makes the date 2010-02-31.
The second month (February) only has 28 days in 2010, so PHP auto-corrects this by just continuing to count days from February...
Get the IP address of the remote host
...
This solution also covers Web API self-hosted using Owin. Partially from here.
You can create a private method in you ApiController that will return remote IP address no matter how you host your Web API:
private const string HttpContext = "MS_HttpContext";
private const string Remote...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part.
...
What command means “do nothing” in a conditional in Bash?
... you say do nothing when X, then rephrase it as avoid a branch where X. Usually you can make the avoidance happen by simply negating X and applying it to all other conditions.
So the OPs example with the rule applied may be restructured as:
if [ "$a" -lt 10 ] && [ "$a" -le 5 ]
then
ech...
How can I add an animation to the activity finish()
...
I override pending transition just after calling finish();
In my case, I have done it to avoid transitions.
finish();
Details.this.overridePendingTransition(R.anim.nothing,R.anim.nothing);
Order is important :)
...
Blank space at top of UITextView in iOS 10
...view is a scroll view. View controllers will add a content offset automatically to scroll views, as it is assumed they will want to scroll up behind the nav bar and status bar.
To prevent this, set the following property on the view controller containing the text view:
self.automaticallyAdjustsSc...