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How do I increase the RAM and set up host-only networking in Vagrant?
...
To increase the memory or CPU count when using Vagrant 2, add this to your Vagrantfile
Vagrant.configure("2") do |config|
# usual vagrant config here
config.vm.provider "virtualbox" do |v|
v.memory = 1024
v.cpus = 2
end
e...
Running a cron every 30 seconds
...ormatted to ensure it's easy to keep them synchronised.
Both cron jobs actually run every minute but the latter one will wait half a minute before executing the "meat" of the job, /path/to/executable.
For other (non-cron-based) options, see the other answers here, particularly the ones mentioning fc...
Time complexity of Euclid's Algorithm
...rations is linear in the number of input digits. For numbers that fit into cpu registers, it's reasonable to model the iterations as taking constant time and pretend that the total running time of the gcd is linear.
Of course, if you're dealing with big integers, you must account for the fact that ...
Why '&&' and not '&'?
...luation of the rest (op.CanExecute()) is skipped.
Apart from this, technically, they are different, too:
&& and || can only be used on bool whereas & and | can be used on any integral type (bool, int, long, sbyte, ...), because they are bitwise operators. & is the bitwise AND operat...
What does it mean to hydrate an object?
... you probably don't need to deal with hydration explicitly. You would typically use deserialization instead so you can write less code. Some data access APIs don't give you this option, and in those cases you'd also have to explicitly call the hydration step yourself.
For a bit more detail on the c...
Proper practice for subclassing UIView?
...Rect , and layoutSubviews . (I'm thinking in terms of setup and teardown callbacks.) In my case, I'm setting up my frame and internal views in layoutSubviews , but I'm not seeing anything onscreen.
...
What are important languages to learn to understand different approaches and concepts? [closed]
When all you have is a pair of bolt cutters and a bottle of vodka, everything looks like the lock on the door of Wolf Blitzer's boathouse. (Replace that with a hammer and a nail if you don't read xkcd)
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Service vs IntentService in the Android platform
...use threads within Service.
The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. Another case of use is when callbacks are needed (Intent triggered tasks).
How to trigger?
The Se...
Why is String.chars() a stream of ints in Java 8?
...nd this was to prevent the explosion of methods and classes.
Still, personally I think this was a very bad decision, and there should, given they do not want to make CharStream, which is reasonable, different methods instead of chars(), I would think of:
Stream<Character> chars(), that give...
马化腾给创业者的3点建议：行业跨界领域最有机会诞生创新 - 资讯 - 清泛网 ...
...不平衡等等。在内地，其实很多学校也是蛮复杂，有很多问题，需要一些明朗的政策支持，可能下面做事情才会更加清晰。正是这次我们看到产学研的成果，我们看到李教授带出来的团队，正是得益于港科大比较清晰的政策，比...