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What can MATLAB do that R cannot do? [closed]
...operations).
R has statistical functionality hard to find elsewhere (>2000 Packages on CRAN), and lots of statisticians use it. On the other hand, MATLAB has lots of (expensive) toolboxes for engineering applications like
image processing/image acquisition,
filter design,
fuzzy logic/fuzzy con...
How to merge a specific commit in Git
...
@openid000: "more fine grained branches": which is indeed exactly what bdonlan suggested in his answer.
– VonC
May 22 '09 at 8:47
...
Get last n lines of a file, similar to tail
... timeit it seems pretty fast. Tailing 100 lines of a log file that has 100,000 lines:
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.txt", "r");', number=10)
0.0014600753784179688
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.tx...
What is the JavaScript convention for no operation?
... Function.prototype();
console.log('End : ', Date.now());
}, 1000);
Although this is a "true noop" since most browsers seem to do nothing to execute the noop defined this way (and hence save CPU cycles), there might be some performance issues associated with this (as is also mentione...
What's the difference between ASCII and Unicode?
...ntation of a few characters in ASCII:
0100101 -> % (Percent Sign - 37)
1000001 -> A (Capital letter A - 65)
1000010 -> B (Capital letter B - 66)
1000011 -> C (Capital letter C - 67)
0001101 -> Carriage Return (13)
See the full ASCII table over here.
ASCII was meant for English only.
...
What is the Invariant Culture?
...mmers which think the word is english ;) And then german customers write 1.000,00 for 1000 ;) Ouch. * Even in the same language, Switzerland and Germany for example use "." and "," in different ways in numbers. Result -> Config files are garbage. Use Invariant Language there ;)
...
Correct way to use StringBuilder in SQL
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@Vanathi: Glad that helped. Yeah, if it's going to be 6,000 characters, telling StringBuilder that in advance will save about eight memory reallocations (assuming the initial string was about 10 characters, the SB would have been 26 to start with, then doubled to 52, then 104, 208...
Custom toast on Android: a simple example
...t"
android:layout_height="fill_parent"
android:textColor="#000" />
</LinearLayout>
STEP 2: In the Activity code, get the above custom view and attach to Toast:
// Get your custom_toast.xml ayout
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.infla...
Send string to stdin
...y
xxd -r -p <<BINARY | iconv -f UCS-4BE -t UTF-8 | /my/bash/script
0000 79c1 0000 306f 0000 3061 0000 3093 0000 3077 0000 3093 0000 304b 0000 3093 0000 3077 0000 3093 0000 306a 0000 8a71 0000 306b 0000 30ca 0000 30f3 0000 30bb
0000 30f3 0000 30b9 0000 3092 0000 7ffb 0000 8a33 0000 3059 0000 ...
Fast way of counting non-zero bits in positive integer
...00FF00FF00FF) + ((n & 0xFF00FF00FF00FF00) >> 8)
n = (n & 0x0000FFFF0000FFFF) + ((n & 0xFFFF0000FFFF0000) >> 16)
n = (n & 0x00000000FFFFFFFF) + ((n & 0xFFFFFFFF00000000) >> 32) # This last & isn't strictly necessary.
return n
This works for 64-bit pos...