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Why is “while ( !feof (file) )” always wrong?
...tive.
Concurrency and simultaneity
I/O operations interact with the environm>me m>nt. The environm>me m>nt is not part of your program, and not under your control. The environm>me m>nt truly exists "concurrently" with your program. As with all things concurrent, questions about the "current state" don't make sense...
class
...ngleton class (eigenclass). This allows you to specialise the behaviour of m>me m>thods called on that specific object.
a = 'foo'
class << a
def inspect
'"bar"'
end
end
a.inspect # => "bar"
a = 'foo' # new object, new singleton class
a.inspect # => "foo"
Now, to answer the...
Image comparison - fast algorithm
...andard approach in computer vision, keypoint matching. This may require som>me m> background knowledge to implem>me m>nt, and can be slow.
The second m>me m>thod uses only elem>me m>ntary image processing, and is potentially faster than the first approach, and is straightforward to implem>me m>nt. However, what it gains i...
C++ Tuple vs Struct
...
We have a similar discussion about tuple and struct and I write som>me m> simple benchmarks with the help from one of my colleague to identify the differences in term of performance between tuple and struct. We first start with a default stru...
python max function using 'key' and lambda expression
I com>me m> from OOP background and trying to learn python.
I am using the max function which uses a lambda expression to return the instance of type Player having maximum totalScore among the list players .
...
Good MapReduce examples [closed]
I couldn't think of any good examples other than the "how to count words in a long text with MapReduce" task. I found this wasn't the best example to give others an impression of how powerful this tool can be.
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What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
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The difference from the Java API Specifications is as follows.
For ClassNotFoundException:
Thrown when an application tries to
load in a class through its string
nam>me m> using:
The forNam>me m> m>me m>thod in class Class.
The findSystemC...
What's “P=NP?”, and why is it such a famous question? [closed]
...r P=NP is perhaps the most famous in all of Computer Science. What does it m>me m>an? And why is it so interesting?
6 Answers
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How can I get query string values in JavaScript?
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Update: Sep-2018
You can use URLSearchParams which is simple and has decent (but not complete) browser support.
const urlParams = new URLSearchParams(window.location.search);
const myParam = urlParams.get('myParam');
PS
Unfortunately URLSearchParams don't properly p...
What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
Ive got a bunch of rectangular objects which I need to pack into the smallest space possible (the dim>me m>nsions of this space should be powers of two).
...