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Creation timestamp and last update timestamp with Hibernate and MySQL
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1. What database column types you should use
Your first question was:
What data types would you use in the database (assuming MySQL, possibly in a different timezone that the JVM)? Will the data types be timezone-aware?
I...
What is the Scala annotation to ensure a tail recursive function is optimized?
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Expanding on what you've said above, Scala can only optimise tail calls for a single method. Mutually recursive calls won't be optimised.
– Rich Dougherty
May 26 '12 at 4:19
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Ignore whitespace in HTML [duplicate]
...his extremely useful feature (think of inline blocks in general) yet. :-(
What I did from time to time, although it's ugly as the night is dark, is to use comments:
<p><!--
--><img src="." alt="" /><!--
--><img src="." alt="" /><!--
--><img src="." alt=...
How do I abort/cancel TPL Tasks?
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what if there is a blocking call which does not return inside the executing task?
– mehmet6parmak
Jun 26 '14 at 6:47
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Finding the number of days between two dates
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What about leap seconds? Not all days have exactly 24*60*60 seconds. This code might be sufficient for practical purposes but it's not exact in sone extremely rare edge cases.
– Benjamin Brizzi
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What is your single most favorite command-line trick using Bash? [closed]
We all know how to use <ctrl>-R to reverse search through history, but did you know you can use <ctrl>-S to forward search if you set stty stop "" ? Also, have you ever tried running bind -p to see all of your keyboard shortcuts listed? There are over 455 on Mac OS X by default. ...
What does @@variable mean in Ruby?
What are Ruby variables preceded with double at signs ( @@ )? My understanding of a variable preceded with an at sign is that it is an instance variable, like this in PHP:
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How to crop an image in OpenCV using Python
...nderstand that copying the region of interest is the best thing to do, but what about time consuming ? If i do copy() the ROI, compared to slicing, what would be the result ?. Also, If I have a variable tmp in which I store each picture I load from my computer, the slicing shouldn't have a bad impac...
(this == null) in C#!
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@quetzalcoatl: this in CheckNull method is legal. What is not legal is the implicit this-access in () => CheckNull(), essentially () => this.CheckNull(), which is running outside the block of an instance constructor. I agree that the part of spec I cite is mostly focu...
How does Hadoop process records split across block boundaries?
...e file into different FileSplits based on the split size calculated above. What's important here is that each FileSplit is initialized with a start parameter corresponding to the offset in the input file. There is still no handling of the lines at that point. The relevant part of the code looks like...