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What is RSS and VSZ in Linux memory management
What are RSS and VSZ in Linux memory management? In a multithreaded environment how can both of these can be managed and tracked?
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How can I concatenate two arrays in Java?
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@djBo: what about:ByteBuffer buffer = ByteBuffer.allocate(array1.length + array2.length); buffer.put(array1); buffer.put(array2); return buffer.array();
– Sam Goldberg
Dec 2 '11 at 15:29
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Mutable vs immutable objects
...ng an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should you avoid them whenever possible?
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What is the point of Lookup?
...in an efficient manner (rather than just iterating over them all, which is what GroupBy lets you do).
For example, you could take a load of .NET types and build a lookup by namespace... then get to all the types in a particular namespace very easily:
using System;
using System.Collections.Generic;...
Android: how to handle button click
...{
// TODO Auto-generated method stub
***Do what you want with the click here***
}
});
This is my favorite as it has the onClick method right next to where the button variable was set with the findViewById. It seems very neat and tidy that everythi...
Iterate an iterator by chunks (of n) in Python? [duplicate]
...rouper() recipe from the itertools documentation's recipes comes close to what you want:
def grouper(n, iterable, fillvalue=None):
"grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
args = [iter(iterable)] * n
return izip_longest(fillvalue=fillvalue, *args)
It will fill up the last chun...
What is the difference between Collections.emptyList() and Collections.EMPTY_LIST
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f14870819%2fwhat-is-the-difference-between-collections-emptylist-and-collections-empty-lis%23new-answer', 'question_page');
}
);
Post as a guest
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What is the use of the pipe symbol in YAML?
...he array item (specified by -) and the literal is indented 4 from it. Somewhat surprisingly the final: | mapping is not considered a block element even though its value is multi-lined. It sort of makes sense if you think about it -- it's still just a 'one-liner' "key: value" mapping. The value ju...
How to set custom header in Volley Request
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If what you need is to post data instead of adding the info in the url.
public Request post(String url, String username, String password,
Listener listener, ErrorListener errorListener) {
JSONObject params = new JSONOb...
Why are quaternions used for rotations?
...sely defined meaning, but in some rather technical ways that go far beyond what's taught in normal intro classes, so I won't go into any detail). It turns out that quaternions don't have this nice behavior, and so they aren't useful, and vectors/matrices do, so we use them.
Well, I am a physicist,...