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How to create a generic array in Java?
...tly what type of objects it contains (i.e. its constructor was explicitly called with a Class<E> argument, and methods will throw an exception when they are passed arguments that are not of type E. See Collections.checkedCollection.
-> in that case, you should write:
public class GenSet&l...
Why is f(i = -1, i = -1) undefined behavior?
...
Very nice example of how the expression could actually do something unexpected while conforming to sequencing rules. Yes, a bit contrived, but so is the code snipped I'm asking about in the first place. :)
– Nicu Stiurca
Feb 10 '14 at 8...
Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...en to this memory in the main thread and the reads in the created thread (call it T).
Main thread is doing the following writes (ignoring the initial setup of point, will result in p.x and p.y having default values):
to p.x
to p.y
to currentpos
Because there is nothing special about these writ...
Defining a HTML template to append using JQuery
...re are a lot of templating engines out there, many of their features have fallen in to disfavour recently, with iteration (<% for), conditionals (<% if) and transforms (<%= myString | uppercase %>) seen as microlanguage at best, and anti-patterns at worst. Modern templating practices enc...
How to get the difference between two arrays of objects in JavaScript
...ately. (Extra points if it were more efficient than having to run through all m * n comparisons twice!)
– Scott Sauyet
Feb 24 '14 at 12:55
...
Table fixed header and scrollable body
...ad thead th { position: sticky; top: 0; }
/* Just common table stuff. Really. */
table { border-collapse: collapse; width: 100%; }
th, td { padding: 8px 16px; }
th { background:#eee; }
<div class="tableFixHead">
<table>
<thead>
<tr><th>TH 1<...
Why does the use of 'new' cause memory leaks?
...of type T with automatic storage duration. It will get cleaned up automatically when it goes out of scope.
When you write new T() you're creating an object of type T with dynamic storage duration. It won't get cleaned up automatically.
You need to pass a pointer to it to delete in order to clean...
Throwing cats out of windows
Imagine you're in a tall building with a cat. The cat can survive a fall out of a low story window, but will die if thrown from a high floor. How can you figure out the longest drop that the cat can survive, using the least number of attempts?
...
What's the difference between a proc and a lambda in Ruby?
...ept the resulting Proc objects check the number of parameters passed when called.
An example:
p = Proc.new {|a, b| puts a**2+b**2 } # => #<Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lamb...
Parsing command-line arguments in C?
...
Really thorough answer, thanks Christian (upvoted). However, mac users should be aware that the argp approach isn't cross-platform compatible. As I found here, Argp is a non-standardized glibc API extension. It is available i...