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Is there a simple, elegant way to define singletons? [duplicate]
...itance as part of your design, in which case most of the answers below are more suitable
– Jim Jeffries
Jun 6 '11 at 8:23
11
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What are OLTP and OLAP. What is the difference between them?
...the analytics/business intelligence domain, and therefore OLAP is probably more suited.
If you think in terms of "It would be nice to know how/what/how much"..., and that involves all "objects" of one or more kind (ex. all the users and most of the products to know the total spent) then OLAP is pro...
Manual deployment vs. Amazon Elastic Beanstalk
...it just works (at least theoretically).
EC2 by itself is not PAAS. It is more like IAAS (Infrastructure as a Service). You still have to take care of the server instances, install software on them, keep them updated, etc.
Elastic Beanstalk is a PAAS system. So are App Engine and Azure among many...
How can I get the current date and time in UTC or GMT in Java?
...hod which is applying the time zone there... if that's not it, please give more details.
– Jon Skeet
Sep 7 '11 at 13:59
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Determine if a String is an Integer in Java [duplicate]
...tch just about every error condition you can think of. It will be a little more expensive (you have to create a Scanner object, which in a critically-tight loop you don't want to do. But it generally shouldn't be too much more expensive, so for day-to-day operations it should be pretty reliable.
pu...
wildcard ssl on sub-subdomain [closed]
...ching is performed using the matching rules specified by
RFC2459. If more than one identity of a given type is present in
the certificate (e.g., more than one dNSName name, a match in any one
of the set is considered acceptable.) Names may contain the wildcard
character * which ...
How do I convert seconds to hours, minutes and seconds?
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UTF-8, UTF-16, and UTF-32
...nce it uses 2 bytes per character, primarily. UTF-8 will start to use 3 or more bytes for the higher order characters where UTF-16 remains at just 2 bytes for most characters.
UTF-32 will cover all possible characters in 4 bytes. This makes it pretty bloated. I can't think of any advantage to using...
Pythonic way to create a long multi-line string
...""" this is a very
long string if I had the
energy to type more and more ..."""
You can use single quotes too (3 of them of course at start and end) and treat the resulting string s just like any other string.
NOTE: Just as with any string, anything between the starting and ending...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
...ponents
Con: complex code required to validate simple data types
Con: much more complex SQL for simple
reports
Con: complex reports can become almost
impossible
Con: poor performance for large data sets
Option 2, Modelling each entity separately:
Con: more time required to gather
requirements an...