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How to use Comparator in Java to sort
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There are a couple of awkward things with your example class:
it's called People while it has a price and info (more something for objects, not people);
when naming a class as a plural of something, it suggests it is an abstraction of more than one thing.
Anyway, here's a demo of how to u...
Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
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This is called programming to interface. This will be helpful in case if you wish to move to some other implementation of List in the future. If you want some methods in ArrayList then you would need to program to the implementation ...
How do you run a crontab in Cygwin on Windows?
.../bin/sh"), so you could perhaps execute them from the windows scheduler by calling the shell program (e.g., "C:\cygwin\bin\sh.exe -l /my/cygwin/path/to/prog".)
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Java Class.cast() vs. cast operator
...bject) isn't special to the compiler. It could be optimized when used statically (i.e. Foo.class.cast(o) rather than cls.cast(o)) but I've never seen anybody using it - which makes the effort of building this optimization into the compiler somewhat worthless.
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In C# what is the difference between ToUpper() and ToUpperInvariant()?
...swer is perfect. I just wanted to add that ToUpperInvariant is the same as calling ToUpper(CultureInfo.InvariantCulture).
That makes Jon's example a little simpler:
using System;
using System.Drawing;
using System.Globalization;
using System.Threading;
using System.Windows.Forms;
public class Tes...
How to set breakpoints in inline Javascript in Google Chrome?
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The tab is called Sources instead of Scripts now.
– CoderDennis
Aug 30 '12 at 21:57
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How many characters can UTF-8 encode?
... The main thrust of the OP's question is related to why it is called UTF-8 -- this doesn't really answer that.
– jbyrd
Feb 13 at 14:25
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Painless way to install a new version of R?
...you find in the /etc/ directory of your R build. Then it will load automatically every time R loads, and you don't have to worry about that any more. You can just install and load packages from the specified directory.
Finally, I have some small code included in my Rprofile.site allowing me to rein...
How do I delete unpushed git commits?
...he branch.
You now have a branch in which you have applied changes, let's call it "topic".
You will now create a duplicate of your topic branch and then rebase it onto the source code dump that is sitting in branch "dump":
git branch topic_duplicate topic
git rebase --onto dump master topic_dupli...
Why are variables “i” and “j” used for counters?
...ion to mathematics when programming. In fact, the first course I took was called "Fortran for Business" and was taught not by the math faculty, but the business/econ faculty.
For me, at least, the naming of variables had little to do with mathematics, but everything due to the habits I picked up w...