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Why does an overridden function in the derived class hide other overloads of the base class?
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Judging by the wording of your question (you used the word "hide"), you already know what is going on here. The phenomenon is called "name hiding". For some reason, every time someone asks a question about why name hiding happens, pe...
Using Java 8 to convert a list of objects into a string obtained from the toString() method
...ul new things in Java 8. E.g., I can iterate with a stream over a list of objects and then sum the values from a specific field of the Object 's instances. E.g.
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How to filter a dictionary according to an arbitrary condition function?
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ThomasThomas
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How to detect if CMD is running as Administrator/has elevated privileges?
From inside a batch file, I would like to test whether I'm running with Administrator/elevated privileges.
13 Answers
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Javascript equivalent of Python's zip function
...rgument syntax, so the following function definition will act like python, but see below for disclaimer... this will not be its own inverse so zip(zip(x)) will not equal x; though as Matt Kramer points out zip(...zip(...x))==x (like in regular python zip(*zip(*x))==x))
Alternative definition equiv....
Get top n records for each group of grouped results
The following is the simplest possible example, though any solution should be able to scale to however many n top results are needed:
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How to sort an array in descending order in Ruby
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It's always enlightening to do a benchmark on the various suggested answers. Here's what I found out:
#!/usr/bin/ruby
require 'benchmark'
ary = []
1000.times {
ary << {:bar => rand(1000)}
}
n = 500
Benchmark.bm(20) do |x|
x.report("sort")...
Serializing object that contains cyclic object value
I have an object (parse tree) that contains child nodes which are references to other nodes.
7 Answers
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C# Regex for Guid
...tes around each Guid value. I was thinking I could use a Regex to do this but I'm not exactly a Regex guru.
6 Answers
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Weird Integer boxing in Java
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The true line is actually guaranteed by the language specification. From section 5.1.7:
If the value p being boxed is true,
false, a byte, a char in the range
\u0000 to \u007f, or an int or short
number between -128 and 127, then let
r1 and r2 be the...