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Rounding up to next power of 2
...te a function that returns the nearest next power of 2 number. For example if my input is 789, the output should be 1024. Is there any way of achieving this without using any loops but just using some bitwise operators?
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Error executing command 'ant' on Mac OS X 10.9 Mavericks when building for Android with PhoneGap/Cor
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Ant is in homebrew-core now. Simply use brew install ant
– meaku
Oct 29 '13 at 12:31
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Functional programming - is immutability expensive? [closed]
...ing, let’s consider this reference implementation in Haskell (I don’t know Scala …) from the Haskell introduction:
qsort [] = []
qsort (x:xs) = qsort lesser ++ [x] ++ qsort greater
where lesser = (filter (< x) xs)
greater = (filter (>= x) xs)
The first disadvantage...
How to rollback a specific migration?
...back everything. Not nice! This was Rails 4.2 - I guess it may be fixed by now.
– Dave Hartnoll
Mar 13 '18 at 16:37
1
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How do i find out what all symbols are exported from a shared object?
...d library on AIX), a UNIX shared library, or a Windows DLL? These are all different things, and your question conflates them all :-(
For an AIX shared object, use dump -Tv /path/to/foo.o.
For an ELF shared library, use readelf -Ws /path/to/libfoo.so, or (if you have GNU nm) nm -D /path/to/libfoo.s...
In Swift how to call method with parameters on GCD main thread?
...ch after on the main queue, use:
DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
// your code here
}
Older versions of Swift used:
dispatch_async(dispatch_get_main_queue(), {
let delegateObj = UIApplication.sharedApplication().delegate as YourAppDelegateClass
delegateObj.addUIImage...
Append an object to a list in R in amortized constant time, O(1)?
If I have some R list mylist , you can append an item obj to it like so:
17 Answers
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Convert Base64 string to an image file? [duplicate]
...ase64_string, $output_file) {
// open the output file for writing
$ifp = fopen( $output_file, 'wb' );
// split the string on commas
// $data[ 0 ] == "data:image/png;base64"
// $data[ 1 ] == <actual base64 string>
$data = explode( ',', $base64_string );
// we coul...
How to get rid of punctuation using NLTK tokenizer?
...k.
http://www.nltk.org/book/ch01.html
import nltk
s = "I can't do this now, because I'm so tired. Please give me some time. @ sd 4 232"
words = nltk.word_tokenize(s)
words=[word.lower() for word in words if word.isalpha()]
print(words)
output
['i', 'ca', 'do', 'this', 'now', 'because', '...
How do I get the filepath for a class in Python?
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Not sure what I was doing different but instead of getfile I had to use: inspect.getmodule(C.__class__)
– AJP
Jan 16 '14 at 0:34
4
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