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How can building a heap be O(n) time complexity?
...ackward and calling siftDown. No matter which approach you choose, you are selecting the next item in the unsorted portion of the array and performing the appropriate operation to move it into a valid position in the ordered portion of the array. The only difference is performance.
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Understanding the ngRepeat 'track by' expression
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You can track by $index if your data source has duplicate identifiers
e.g.: $scope.dataSource: [{id:1,name:'one'}, {id:1,name:'one too'}, {id:2,name:'two'}]
You can't iterate this collection while using 'id' as identifier (duplicate id:1).
WON'T WORK:
<element ng-repeat="item...
How to change the type of a field?
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Had a situation where I needed to convert the _id field as well as not conflict with other indexes: db.questions.find({_id:{$type:16}}).forEach( function (x) { db.questions.remove({_id:x._id},true); x._id = ""+x._id; db.questions.save(x); });
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Reference: mod_rewrite, URL rewriting and “pretty links” explained
...ay also look like this:
GET /foo/bar?baz=42 HTTP/1.1
This is just as valid a request for a URL, and it has more obviously nothing to do with files.
The web server is an application listening on a port, accepting HTTP requests coming in on that port and returning a response. A web server is entir...
How to merge a specific commit in Git
...----C
\
\
D-----C'
The problem with this commit is that git considers commits to include all history before them
Where C' has a different SHA-1 ID.
Likewise, cherry picking a commit from one branch to another basically involves generating a patch, then applying it, thus losing hist...
Update data in ListFragment as part of ViewPager
I'm using the v4 compatibility ViewPager in Android. My FragmentActivity has a bunch of data which is to be displayed in different ways on different pages in my ViewPager. So far I just have 3 instances of the same ListFragment, but in the future I will have 3 instances of different ListFragments....
What is the usefulness of PUT and DELETE HTTP request methods?
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The DELETE method requests that the origin server delete the resource identified by the Request-URI. This method MAY be overridden by human intervention (or other means) on the origin server. The client cannot be guaranteed that the operation has been carried out, even if the status code return...
Set the value of an input field
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This is one way of doing it:
document.getElementById("mytext").value = "My value";
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Why can a function modify some arguments as perceived by the caller, but not others?
... @MarkRansom, I think it does make sense if you want to provide optional output destination as in: def foo(x, l=None): l=l or []; l.append(x**2); return l[-1].
– Janusz Lenar
Aug 31 '12 at 13:03
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Aligning textviews on the left and right edges in Android layout
I am getting started with Android. I am having trouble getting a simple layout going.
9 Answers
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