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target=“_blank” vs. target=“_new”
What's the difference between <a target="_new"> and <a target="_blank"> and which should I use if I just want to open a link in a new tab/window?
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Checking if a string is empty or null in Java [duplicate]
...ge Apache Commons StringUtils.isEmpty(str), which checks for empty strings and handles null gracefully.
Example:
System.out.println(StringUtils.isEmpty("")); // true
System.out.println(StringUtils.isEmpty(null)); // true
Google Guava also provides a similar, probably easier-to-read method: Stri...
android get real path by Uri.getPath()
...ssary for you to get a physical path?
For example, ImageView.setImageURI() and ContentResolver.openInputStream() allow you to access the contents of a file without knowing its real path.
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How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?
...matter object. Another is you don't have to add an API - Date class is a standard Java library class.
– ADTC
Jul 17 '13 at 2:21
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Most efficient way to cast List to List
... be declared as taking a List<? extends BaseClass>.
But if it isn't and you can't change it, you can wrap the list with Collections.unmodifiableList(...), which allows returning a List of a supertype of the argument's parameter. (It avoids the typesafety problem by throwing UnsupportedOperati...
Convert java.util.Date to String
...ad of plain new Date() ? Is there difference ?
– Alexander Malakhov
Aug 19 '13 at 4:35
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Beware:...
np.mean() vs np.average() in Python NumPy?
...just offer np.average since weights is already optional. Seems unnecessary and only serves to confuse users.
– Geoff
Nov 30 '15 at 22:03
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git diff renamed file
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The issue with the difference between HEAD^^ and HEAD is that you have an a.txt in both commits, so just considering those two commits (which is what diff does), there is no rename, there is a copy and a change.
To detect copies, you can use -C:
git diff -C HEAD^^ HEA...
How to retrieve the hash for the current commit in Git?
...rev-parse --short HEAD
Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref and git for-each-ref.
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Google Maps API v3: Can I setZoom after fitBounds?
...he addListenerOnce method... that way, you don't have to save the listener and manually remove it, as the method will take care of that for you.
– Matt Diamond
Jan 16 '11 at 20:43
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