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In pure functional languages, is there an algorithm to get the inverse function?
... have an inverter inv :: F -> F such that inv f . f ≡ id. Say we have tested it for the function f = id, by confirming that
inv f (repeat B0) -> (B0 : ls)
Since this first B0 in the output must have come after some finite time, we have an upper bound n on both the depth to which inv had a...
Can I have onScrollListener for a ScrollView?
...tly. this is the best answer. no need to extend HorizontalScrollView. Just tested with a ScrollView, works great: final ScrollView sv = (ScrollView) findViewById(R.id.scrollViewArticle); sv.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener...
How do you echo a 4-digit Unicode character in Bash?
...=1 ))
done
fast_chr $(( t = p | c ))
echo -n "$REPLY$s"
}
## test harness
for (( i=0x2500; i<0x2600; i++ )); do
unichr $i
done
Output was:
─━│┃┄┅┆┇┈┉┊┋┌┍┎┏
┐┑┒┓└┕┖┗┘┙┚┛├┝┞┟
┠┡┢┣┤┥┦┧┨┩┪┫┬...
How to architect an Ember.js application
... files, along with other things like Broccoli for assets and PhantomJS for testing...
– JKillian
Apr 20 '15 at 21:14
F...
How to determine the encoding of text?
...ca -g $tmpfile
echo 'recoding ........'
#iconv -f iso-8859-2 -t utf-8 back_test.xml > $tmpfile
#enca -x utf-8 $tmpfile
#enca -g $tmpfile
recode CP1250..UTF-8 $tmpfile
You might like to check the encoding by opening and reading the file in a form of a loop... but you might need to check the file...
How can I detect the touch event of an UIImageView?
...ew:single_view];
self.myScrollView.userInteractionEnabled = YES;
UILabel *testLabel = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
testLabel.backgroundColor = [UIColor redColor];
[self.myScrollView addSubview:testLabel];
[testLabel addGestureRecognizer:singleTap];
[testLabel setM...
What is a method that can be used to increment letters?
...ell, == works, and if I wanted to be super sure, I could use ===, but I've tested it, and it's fine. Thanks again!
– Sean Kendle
Aug 19 '16 at 13:25
...
How do you make a HTTP request with C++?
...
latest version seems to be broken under mac.. something is messed up with config.h when linked as library.
– eugene
Apr 8 '11 at 0:59
...
Queries vs. Filters
...n uses filters and queries in the same request and it is super fast on the test database. We will soon get the live data in there to see how fast it really is.
– Jonesie
Mar 7 '13 at 5:59
...
Why compile Python code?
...
Is there any difference in memory consumption? I'm testing Python on embedded devices based on mips cpu with only 64MB of RAM, so is there any advantage in memory usage when starting a compiled version of python script?
– valentt
Sep 14 ...