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Avoiding instanceof in Java
...operations is considered a "code smell". The standard answer is "use polymorphism". How would I do it in this case?
9 Ans...
What's Go's equivalent of argv[0]?
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import "os"
os.Args[0] // name of the command that it is running as
os.Args[1] // first command line parameter, ...
Arguments are exposed in the os package http://golang.org/pkg/os/#Variables
If you're going to do argument ha...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
... with the same packageName as an app that's already installed on the emulator, but the one you're trying to install has a lower versionCode (integer value for your version number).
You might have installed from a separate copy of the code where the version number was higher than the copy you're wor...
Multiprocessing - Pipe vs Queue
...an have multiple producers and consumers.
When to use them
If you need more than two points to communicate, use a Queue().
If you need absolute performance, a Pipe() is much faster because Queue() is built on top of Pipe().
Performance Benchmarking
Let's assume you want to spawn two processes ...
How to get the index of a maximum element in a numpy array along one axis
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this works fine for integers but what can I do for float values and the numbers between 0 and 1
– Priyom saha
Feb 23 '19 at 8:26
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How to make vi redraw screen?
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I've been using ctrl+L for such purposes for 35 years now, what's wrong with it?
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What is Lazy Loading?
...he opposite is Eager Loading, where you load something right away, long before you need it.
If you are curious why people might use lazy loading, consider an application that takes a LOOOOONG time to start. This application is probably doing a lot of eager loading... loading things from disk, and ...
Execute AsyncTask several times
...n I press an update button which calls again the AsyncTask(In case the network job didnt work). Cause then appears an Exception which says
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Use String.split() with multiple delimiters
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I think you need to include the regex OR operator:
String[]tokens = pdfName.split("-|\\.");
What you have will match:
[DASH followed by DOT together] -.
not
[DASH or DOT any of them] - or .
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Why Func instead of Predicate?
...on variants come from .net 3.5.
So those Func predicates are used mainly for consistency in the LINQ operators. As of .net 3.5, about using Func<T> and Action<T> the guideline states:
Do use the new LINQ types Func<> and
Expression<> instead of custom
delegates and p...