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How to revert initial git commit?
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In case anyone gets confused by gman's comments: git update-ref -d HEAD does actually revert the initial commit, but keeps all previously commited changes added to the index. If you want to also remove those changes, just execute a foll...
Fast check for NaN in NumPy
...tains no NaNs, which is my expected input. But I've decided to accept this one anyway, because it catches inf and neginf as well.
– Fred Foo
Jul 18 '11 at 20:27
2
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...a couple of differences, though in practical terms they're not usually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have:
var a = 0; // 1
let a = 0; // 1.1 (new w...
How to run test methods in specific order in JUnit4?
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(...) The ordering of test-method invocations is not guaranteed, so testOneItemCollection() might be executed before testEmptyCollection(). (...)
Why is it so? Well, I believe that making tests order dependent is a practice that the authors don't want to promote. Tests should be independent, th...
JavaScript curry: what are the practical applications?
...g the same JavaScript built-ins over and over with all the same values but one. To steal John's example:
String.prototype.csv = String.prototype.split.partial(/,\s*/);
var results = "John, Resig, Boston".csv();
alert( (results[1] == "Resig") + " The text values were split properly" );
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Java Date vs Calendar
Could someone please advise the current "best practice" around Date and Calendar types.
13 Answers
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set up device for development (???????????? no permissions)
I am using a Samsung galaxy nexus phone ( Android 4.0 platform) .
26 Answers
26
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How to count the number of set bits in a 32-bit integer?
...ng-routines/
http://aggregate.ee.engr.uky.edu/MAGIC/#Population%20Count%20(Ones%20Count)
How this SWAR bithack works:
i = i - ((i >> 1) & 0x55555555);
The first step is an optimized version of masking to isolate the odd / even bits, shifting to line them up, and adding. This effectivel...
Omit rows containing specific column of NA
...y return rows with no NAs
If you want to eliminate all rows with at least one NA in any column, just use the complete.cases function straight up:
DF[complete.cases(DF), ]
# x y z
# 2 2 10 33
Or if completeFun is already ingrained in your workflow ;)
completeFun(DF, names(DF))
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How to redirect 'print' output to a file using python?
...tput for each of my .bam file while I want to redirect ALL these output to one file. So I tried to put
11 Answers
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