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How does the getView() method work when creating your own custom adapter?
...ews, when a View is scrolled so that is no longer visible, it can be used for one of the new Views appearing. This reused View is the convertView. If this is null it means that there is no recycled View and we have to create a new one, otherwise we should use it to avoid creating a new.
3: The pare...
CSS: How do I auto-resize an image to fit a 'div' container?
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Do not apply an explicit width or height to the image tag. Instead, give it:
max-width:100%;
max-height:100%;
Also, height: auto; if you want to specify a width only.
Example: http://jsfiddle.net/xwrvxser/1/
img {
max-width: 100%;
max-he...
Checking if a double (or float) is NaN in C++
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According to the IEEE standard, NaN values have the odd property that comparisons involving them are always false. That is, for a float f, f != f will be true only if f is NaN.
Note that, as some comments below have pointed ou...
What is the difference between exit and return? [duplicate]
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return returns from the current function; it's a language keyword like for or break.
exit() terminates the whole program, wherever you call it from. (After flushing stdio buffers and so on).
The only case when both do (nearly) the same thing is in the main() function, as a return from...
What is the difference between integration testing and functional testing? [closed]
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Integration testing is when you test more than one component and how they function together. For instance how another system interacts with your system or the database interacts with your data abstraction layer. Usually this requires an fully installed system, al...
What is the best way to force yourself to master vi? [closed]
A good while ago, I read an article by the creator of viemu , clearing up a lot of the misconceptions about vi, as well as explaining why it's a good idea (and why it's been very popular for the last 30 years+). The same guy also has a great set of graphical cheat sheets that teach the basics a f...
How can I add a custom HTTP header to ajax request with js or jQuery?
Does anyone know how to add or create a custom HTTP header using JavaScript or jQuery?
9 Answers
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npm command to uninstall or prune unused packages in Node.js
...matically when package-locks are enabled, so this is not necessary except for removing development packages with the --production flag.
Run npm prune to remove modules not listed in package.json.
From npm help prune:
This command removes "extraneous" packages. If a package name is provided, then ...
What is the difference between persist() and merge() in JPA and Hibernate?
... it
becomes managed. The entity X will be
entered into the database at or before
transaction commit or as a result of
the flush operation.
If X is a
preexisting managed entity, it is
ignored by the persist operation.
However, the persist operation is
cascaded to entities referenced...
Why does typeof NaN return 'number'?
...avascript but common computer science principle.
From http://en.wikipedia.org/wiki/NaN:
There are three kinds of operation
which return NaN:
Operations with a NaN as at least one operand
Indeterminate forms
The divisions 0/0, ∞/∞, ∞/−∞, −∞/∞, and −∞/−...