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ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
...Garbage Collector could move it at any
time. Arrays are objects in Java, and
the way data is stored inside that
object could vary from one JVM
implementation to another.
For this reason, the notion of a
direct buffer was introduced. Direct
buffers are intended for interaction
with...
How to Select Every Row Where Column Value is NOT Distinct
... thing that is incorrect with your query is that you are grouping by email and name, that forms a group of each unique set of email and name combined together and hence
aaron and aaron@gmail.com
christy and aaron@gmail.com
john and aaron@gmail.com
are treated as 3 different groups rather all bel...
How to select multiple files with ?
...a On the 20th of October of 2009 most browsers didn't support that feature and Niavlys already showed the html5 solution 2 years ago.
– ZippyV
Jul 5 '13 at 23:40
3
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Does Eclipse have line-wrap
I'm editing an XML file with the Eclipse IDE and need to input paragraphs of text. It doesn't seem that eclipse has a line-wrap feature though. Anyone knows if it does or if there's a plugin for that?
...
Select last row in MySQL
...
I just ran this over 20m rows and it was very fast. I assume there's some kind of special case for handling this query. (EDIT: MySQL 5.7, InnoDB engine)
– Daniel Buckmaster
Oct 29 '18 at 2:20
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Docker and securing passwords
...menting with Docker recently on building some services to play around with and one thing that keeps nagging me has been putting passwords in a Dockerfile. I'm a developer so storing passwords in source feels like a punch in the face. Should this even be a concern? Are there any good conventions on h...
Set timeout for ajax (jQuery)
...tStatus, errorThrown) option. The options are "timeout", "error", "abort", and "parsererror".
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Convert python datetime to epoch with strftime
...ime (if you check at http://docs.python.org/library/datetime.html#strftime-and-strptime-behavior it's not in the list), the only reason it's working is because Python is passing the information to your system's strftime, which uses your local timezone.
>>> datetime.datetime(2012,04,01,0,0)...
Checkout multiple git repos into same Jenkins workspace
Using Jenkins 1.501 and Jenkins Git plugin 1.1.26
9 Answers
9
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Why doesn't C have unsigned floats?
...If C++ did support it, then you would be sometimes using an unsigned float and not realizing that your performance has just been killed. If C++ supported it then every floating point operation would need to be checked to see if it is signed or not. And for programs that do millions of floating poi...