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What package naming convention do you use for personal/hobby projects in Java?
...you can make up a package name that you like. Don't make up something that starts with com. or net. or other top-level domain though, because that would imply that you own the domain name (ie. using com.john as your package name just because your name happens to be John is not a good idea).
If you'...
Android YouTube app Play Video Intent
....parse("http://www.youtube.com/watch?v=" + id));
try {
context.startActivity(appIntent);
} catch (ActivityNotFoundException ex) {
context.startActivity(webIntent);
}
}
Note: Beware when you are using this method, YouTube may suspend your channel due to spam, this happ...
Find size of an array in Perl
...bad idea. People who use scalar for no reason learn the wrong lesson. They start getting into their heads that operators return lists that can be coerced into scalars. Seen it dozens of times.
– ikegami
Aug 12 '14 at 14:42
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What do 'real', 'user' and 'sys' mean in the output of time(1)?
...o CPU time used only by the process.
Real is wall clock time - time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete).
User is the amount of CPU time spent...
C dynamically growing array
...ays for you.
If you do plan to write your own, here's something to get you started: most dynamic array implementations work by starting off with an array of some (small) default size, then whenever you run out of space when adding a new element, double the size of the array. As you can see in the ex...
How do I get the difference between two Dates in JavaScript?
...to automatically fill in the end date when the user selects or changes the start date. I can't quite figure out, however, how to get the difference between the two times, and then how to create a new end Date using that difference.
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How to use multiple AWS Accounts from the command line?
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Ref
http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#cli-multiple-profiles
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Difference between OData and REST web services
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I might be wrong on this (just started learning about odata), but as of version 3 of the [protocol][odata.org/documentation] it appears theres also a JSON format specified, which you can use alternatively. Can you shed some light on this?
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How can I create directories recursively? [duplicate]
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a fresh answer to a very old question:
starting from python 3.2 you can do this:
import os
path = '/home/dail/first/second/third'
os.makedirs(path, exist_ok=True)
thanks to the exist_ok flag this will not even complain if the directory exists (depending on your...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
... looking for a “good enough” algorithm for your problem, or a place to start, here are some general guidelines I’ve found to work well over the years.
如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测...