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Android: upgrading DB version and adding new table
I've already created sqlite tables for my app, but now I want to add a new table to the database.
5 Answers
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Ways to save enums in database
...e that checks that the Java enum and the database enum table have the same contents. That's left as an m>ex m>ercise for the reader.
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What is so bad about singletons? [closed]
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Singletons solve one (and only one) problem.
Resource Contention.
If you have some resource that
(1) can only have a single instance, and
(2) you need to manage that single instance,
you need a singleton.
There aren't many m>ex m>amples. A log file is the big one. You don't w...
What is the use of “assert” in Python?
...these are just redundant parentheses around False, which evaluate to their contents. But with assert(False,) the parentheses are now a tuple, and a non-empty tuple evaluates to True in a boolean contm>ex m>t.
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HTTP GET with request body
...eaning by parsing it on the server and changing your response based on its contents, then you are ignoring this recommendation in the HTTP/1.1 spec, section 4.3:
...if the request method does not include defined semantics for an entity-body, then the message-body SHOULD be ignored when handling the...
Singletons vs. Application Contm>ex m>t in Android?
... you introduce it m>ex m>plicitly through threads or implicitly by publishing a content provider or service IBinder to other processes.
Just be thoughtful about what you are doing. :)
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What is the difference between a framework and a library?
... usually don't see what's inside, unless you m>ex m>plicitly select to show the content).
Wikipedia calls framework a "buzzword". It defines a software framework as
A software framework is a re-usable
design for a software system (or
subsystem). A software framework may
include support program...
How to vertically align an image inside a div
...gn: center;
margin: 1em 0;
}
.frame:before,
.frame_before {
content: "";
display: inline-block;
height: 100%;
vertical-align: middle;
}
img {
background: #3A6F9A;
vertical-align: middle;
max-height: 25px;
max-width: 160px;
}
/* Move this to c...
How do I design a class in Python?
...bject. What does this hide and store? Well clearly it can't store the full contents of the database, since that is why we have a database! So what is the point? The goal is to hide how the database works from people who use the Database object. Good classes will simplify reasoning when manipulating ...
How can I selectively merge or pick changes from another branch in Git?
I'm using Git on a new project that has two parallel -- but currently m>ex m>perimental -- development branches:
25 Answers
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