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Why are there two ways to unstage a file in Git?
...gt; does not unstage a file, it actually stages the removal of the file(s) from the repo (assuming it was already committed before) but leaves the file in your working tree (leaving you with an untracked file).
git reset -- <filePath> will unstage any staged changes for the given file(s).
Th...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
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This is documented behavior. From ?as.Date:
format: A character string. If not specified, it will try
'"%Y-%m-%d"' then '"%Y/%m/%d"' on the first non-'NA' element,
and give an error if neither works.
as.Date("01 Jan 2000") ...
Scala: List[Future] to Future[List] disregarding failed futures
... futures `fs`, returns the future holding the list of Try's of the futures from `fs`.
* The returned future is completed only once all of the futures in `fs` have been completed.
*/
def allAsTrys[T](fItems: /* future items */ List[Future[T]]): Future[List[Try[T]]] = {
val listO...
Malloc vs new — different padding
...malloc" or "padded like new"? That might give clues to where the idea came from.
Maybe he's confused, but maybe the code he's talking about is more than a straight difference between malloc(sizeof(Foo) * n) vs new Foo[n]. Maybe it's more like:
malloc((sizeof(int) + sizeof(char)) * n);
vs.
struc...
Soft hyphen in HTML ( vs. ­)
...of IE (10 or 11) and doesn't work properly in Edge.
When copied and pasted from browsers: (tested 2015) as expected for &shy; and &#173; for Chrome and Firefox on Mac, on Windows (10), it keeps the characters and pastes hard hyphens into Notepad and invisible soft hyphens into applications t...
When should I use the assets as opposed to raw resources in Android?
... that will act as a reference to
a file, meaning it can be easily accessed from other Android classes
and methods and even in Android XML files. Using the automatically
generated ID is the fastest way to have access to a file in Android.
The assets folder is an “appendix” directory. The R class...
Reading output of a command into an array in Bash
...d. It's cleaner and more semantically correct. Note that this is different from printf '', which doesn't output anything. printf '\0' prints a null byte, needed by read to happily stop reading there (remember the -d '' option?).
If you can, i.e., if you're sure your code will run on Bash≥4, u...
Proper way to handle multiple forms on one page in Django
...ctions to deal with the two different forms.
Read the submit button values from the POST data. You can tell which submit button was clicked: How can I build multiple submit buttons django form?
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Preferred order of writing latitude & longitude tuples in GIS services
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First two sentences from my answer: EPSG:4326 specifically states that the coordinate order should be latitude, longitude. Many software packages still use longitude, latitude ordering. Isn't that exactly the same?
– Shane
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How to concatenate two MP4 files using FFmpeg?
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FOR MP4 FILES
For .mp4 files (which I obtained from DailyMotion.com: a 50 minute tv episode, downloadable only in three parts, as three .mp4 video files) the following was an effective solution for Windows 7, and does NOT involve re-encoding the files.
I renamed the file...