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How do I set cell value to Date and apply default Excel date format?
...ing Apache POI for some time to read existing Excel 2003 files programmatically. Now I have a new requirement to create entire .xls files in-memory (still using Apache POI) and then write them to a file at the end. The only problem standing in my way is the handling of cells with dates.
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Render HTML to an image
... which already has a lot of answers, yet I still spent hours trying to actually do what I wanted:
given an html file, generate a (png) image with transparent background from the command line
Using Chrome headless (version 74.0.3729.157 as of this response), it is actually easy:
"/Applications/G...
What's your most controversial programming opinion?
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The only "best practice" you should be using all the time is "Use Your Brain".
Too many people jumping on too many bandwagons and trying to force methods, patterns, frameworks etc onto things that don't warrant them. Just because something is new, or because someone r...
Appending a vector to a vector [duplicate]
...end(a), std::begin(b), std::end(b));
The second variant is a more generically applicable solution, as b could also be an array. However, it requires C++11. If you want to work with user-defined types, use ADL:
using std::begin, std::end;
a.insert(end(a), begin(b), end(b));
...
Embedding ads on Android app?
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I have personally used both Admob and Adsense.
I was wary when I first implemented ads thinking that my users would be upset, but I have not received one complaint from over 500,000 active installations.
The only permission that you nee...
How do I get a class instance of generic type T?
... of Foo , I want to get the class instance of type T , but I just can't call T.class .
21 Answers
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How do I pull files from remote without overwriting local files?
..., well, I weep for you (and your coworkers) ;-)
That said, though, it's really easy to do the "right thing..."
Step 1:
git stash
in your local repo. That will save away your local updates into the stash, then revert your modified files back to their pre-edit state.
Step 2:
git pull
to get ...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
...ume that a developer is only adding enums where they're useful. The only really bad use I've seen of enums was in some harmony code where they really wanted ints (for bitmasks and the like) and the "enum" wasn't an enum in any reasonable sense. If you find yourself calling "ordinal()" a lot, that's ...
Git interoperability with a Mercurial Repository
...interoperability when the developer wants to work from the git side:
Install Mercurial and the hg-git extension. You can do the latter using your package manager, or with easy_install hg-git. Then make sure the following is in your ~/.hgrc:
[extensions]
hggit =
You may see some references that...
Best JavaScript compressor [closed]
...n both YUI Compressor and Google Closure, it compresses better than YUI on all scripts I tested it on, and it's safer than Closure (knows to deal with "eval" or "with").
Other than whitespace removal, UglifyJS also does the following:
changes local variable names (usually to single characters)
jo...