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How ListView's recycling mechanism works
... to the image, as you can see, initially the listview has 7 visible items, then, if you scroll up until item 1 is no longer visible, getView() passes this view (i.e item1) to the recycler and you can use
System.out.println("getview:"+position+" "+convertView);
inside your
public View getView(final ...
How to return a string value from a Bash function
...lobal variable and call it "return", as I see you do in your scripts. But then that is by convention, NOT actually tied programmatically to the execution of your code. "clearly a better way"? Um, no. Command substitution is far more explicit and modular.
– Wildcard
...
Change date of git tag (or GitHub Release based on it)
...bove, and finally push the resulting tag to GitHub:
git push --tags
and then go and re-add the GitHub Release information again.
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Clang vs GCC for my Linux Development project
... a plugin that allows using the gcc front-end (and possibly optimizer) and then the LLVM backend to generate the code.
– Matthieu M.
Dec 8 '11 at 13:04
1
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Why does changing 0.1f to 0 slow down performance by 10x?
...s to the start of the code:
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
Then the version with 0 is no longer 10x slower and actually becomes faster. (This requires that the code be compiled with SSE enabled.)
This means that rather than using these weird lower precision almost-zero values, we ju...
mongodb group values by multiple fields
...an argument instead of the "localFields" and "foreignFields" options. This then allows a "self-join" with another pipeline expression, in which we can apply $limit in order to return the "top-n" results.
db.books.aggregate([
{ "$group": {
"_id": "$addr",
"count": { "$sum": 1 }
}},
{ "$...
Why is it slower to iterate over a small string than a small list?
...op
This disagrees with what you've found...
You must be using Python 2, then.
>>> python2 -m timeit '[x for x in "abc"]'
1000000 loops, best of 3: 0.309 usec per loop
>>> python2 -m timeit '[x for x in ["a", "b", "c"]]'
1000000 loops, best of 3: 0.212 usec per loop
Let's exp...
What is the difference between Ruby 1.8 and Ruby 1.9
... end
SyntaxError: (irb):1: syntax error, unexpected ':',
expecting keyword_then or ',' or ';' or '\n'
Ruby 1.8.6
irb(main):001:0> case 'a'; when /\w/: puts 'word'; end
word
Action: Use semicolon, then, or newline
Block Variables Now Shadow Local Variables
Ruby 1.9
irb(main):001:0> i=...
Android: install .apk programmatically [duplicate]
...for me, but starting the intent to install did not. I used this answer and then the following to trigger the install stackoverflow.com/a/40131196/2276198
– Alan
May 16 '17 at 15:39
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How can I make setuptools install a package that's not on PyPI?
.... Typically, people mark the development version with 'myproject-dev' and then people use a requirement of 'myproject>=somever,==dev', so that if there isn't a package of somever or higher, easy_install will try to check out or download the release.)
You'll need to specify --process-dependency-...