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Why are global variables evil? [closed]
... python (and in programming in general). Can somebody explain? Links with more info would also be appreciated.
4 Answers
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Android Fragments: When to use hide/show or add/remove/replace?
...all of the teardown events in the lifecycle (onPause, onStop, etc) and if for some reason you need that fragment again you would have to insert it back into the container and let it run through all of its initialization again.
If there is a high probability that you will need that fragment again, ...
What is the most elegant way to remove a path from the $PATH variable in Bash?
Or more generally, how do I remove an item from a colon-separated list in a Bash environment variable?
33 Answers
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What is the difference between Google App Engine and Google Compute Engine?
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App Engine is a Platform-as-a-Service. It means that you simply deploy your code, and the platform does everything else for you. For example, if your app becomes very successful, App Engine will automatically create more instances to handle the i...
How is the java memory pool divided?
I’m currently monitoring a Java application with jconsole. The memory tab lets you choose between:
4 Answers
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Use the XmlInclude or SoapInclude attribute to specify types that are not known statically
I've got a very strange problem when working with .NET's XmlSerializer .
5 Answers
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Ruby sleep or delay less than a second?
...h of a second between sending the commands. What is the best way to sleep for less than a second?
2 Answers
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Return multiple values to a method caller
..., see this answer.
In previous versions, you can use .NET 4.0+'s Tuple:
For Example:
public Tuple<int, int> GetMultipleValue()
{
return Tuple.Create(1,2);
}
Tuples with two values have Item1 and Item2 as properties.
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When is it acceptable to call GC.Collect?
...cularly those you suspect to be in generations 1 and 2 - are now eligible for garbage collection, and that now would be an appropriate time to collect in terms of the small performance hit.
A good example of this is if you've just closed a large form. You know that all the UI controls can now be ga...
Using Kafka as a (CQRS) Eventstore. Good idea?
Although I've come across Kafka before, I just recently realized Kafka may perhaps be used as (the basis of) a CQRS , eventstore .
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