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How do I undo the most recent local commits in Git?
I accidentally committed the wrong files to Git , but I haven't pushed the commit to the server yet.
86 Answers
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Hiding the scroll bar on an HTML page
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Actually, this is not completely the right answer : overflow:hidden doesn't "hide" the scrollbar. It also stop scrolling feature on the page. That's not exactly what we ask for.
– adriendenat
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Bomb dropping algorithm
...to bomb the hollow rectangle of
squares just inside the perimeter. I'll call the perimeter layer 1, and the rectangle inside it layer 2.
An important insight is that there is no point bombing layer 1, because the
"blast radius" you get from doing so is always contained within the blast radius of...
What algorithm gives suggestions in a spell checker?
What algorithm is typically used when implementing a spell checker that is accompanied with word suggestions?
5 Answers
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When to use Vanilla JavaScript vs. jQuery?
... there are certain practices using javascript, instead of jQuery, that actually enable you to write less and do ... well the same amount. And may also yield performance benefits.
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Non-Relational Database Design [closed]
...oldemort,
etc)
Document databases (CouchDB,
MongoDB, etc)
Graph databases (AllegroGraph,
Neo4j, Sesame, etc)
I'm mostly into graph databases, and the elegance of data design using this paradigm was what brought me there, tired of the shortcomings of RDBMS. I have put a few examples of data design ...
Random number from a range in a Bash Script
... Also, it's probably fine for this use, but I believe shuf does actually permute the entire input. This makes it a bad choice if you're generating the random numbers very frequently.
– Cascabel
Mar 31 '10 at 20:42
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“cannot resolve symbol R” in Android Studio
In every instance in all of my classes where I reference R.id.something , the R is in red and it says "cannot resolve symbol R". Also every time there is R.layout.something it is underlined in red and says "cannot resolve method setContentView(?)". The project always builds fine. It is annoyin...
Java HashMap performance optimization / alternative
...={99,100}) will hash to the same value as (a[]={3,1,2}, b[]={100,99}). Actually all keys k1 and k2 where sum(k1.a)==sum(k2.a) and sum(k1.b)=sum(k2.b) will result in collisions. I suggest assigning a weight to each position of the array:
hash = hash * 5381 + (c0*a[0] + c1*a[1]);
hash = hash * 5381 +...
C programming in Visual Studio
...17396
From the link above:
By default, the Visual C++ compiler treats all files that end in .c as C source code, and all files that end in .cpp as C++ source code. To force the compiler to treat all files as C regardless of file name extension, use the /Tc compiler option.
That being said, I ...