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How to get first record in each group using Linq
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var res = from element in list
group element by element.F1
into groups
select groups.OrderBy(p => p.F2).First();
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What is RSS and VSZ in Linux memory management
... memory that is allocated also may not be in RSS until it is actually used by the program. So if your program allocated a bunch of memory up front, then uses it over time, you could see RSS going up and VSZ staying the same.
There is also PSS (proportional set size). This is a newer measure which...
Passing properties by reference in C#
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Properties cannot be passed by reference. Here are a few ways you can work around this limitation.
1. Return Value
string GetString(string input, string output)
{
if (!string.IsNullOrEmpty(input))
{
return input;
}
return outpu...
What is the difference between @Inject and @Autowired in Spring Framework? Which one to use under wh
...execution paths.
Tests 2 and 7 that the author references are 'injection by field name' and 'an attempt at resolving a bean using a bad qualifier', respectively.
The Conclusion should give you all the information you need.
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What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...ows/desktop/… and search for "biCompression". This C structure is stored byte-for-byte in a BMP file, so BMP files can also support those compression types. Just because nobody uses them doesn't mean they are invalid.
– user253751
Apr 5 '14 at 5:19
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Does a finally block always get executed in Java?
...re error, OS panic, et cetera
If the finally block is going to be executed by a daemon thread and all other non-daemon threads exit before finally is called
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Linq to Objects: does GroupBy preserve order of elements?
Does Enumerable.GroupBy from LINQ to Objects preserve order of elements in the groups?
1 Answer
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How to send a custom http status message in node / express?
... Reason-Phrase (the text appearing immediately after the status code) sent by Express.
What you want is res.statusMessage. This is not part of Express, it's a property of the underlying http.Response object in Node.js 0.11+.
You can use it like this (tested in Express 4.x):
function(req, res) {
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Peak memory usage of a linux/unix process
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@diralik if you are checking a program written by yourself, you can embed a line of code to look into "/proc/self/status" file.
– Fileland
Mar 19 at 6:00
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How do you calculate the average of a set of circular data? [closed]
... Sons, Inc. as mentioned at http://catless.ncl.ac.uk/Risks/7.44.html#subj4 by Bruce Karsh.
A good way to estimate an average angle, A, from a set of angle measurements
a[i] 0<=i
sum_i_from_1_to_N sin(a[i])
a = arctangent ---------------------------
sum_i_fr...