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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...ttern. Since the Subject class can maintain a list of classes that inherit from 'Observer', without actually knowing the concrete type of those classes, this is an instance of loose coupling. The Subject doesn't depend on any of its Observers or their internal concerns. The observers don't depend on...
Convert from java.util.date to JodaTime
...rry out subtractions between dates. Is there a good concise way to convert from Date to JodaTime ?
2 Answers
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What is the difference between ndarray and array in numpy?
...o create an array using numpy.ndarray, but it is not the recommended way. From the docstring of numpy.ndarray:
Arrays should be constructed using array, zeros or empty ... The parameters given here refer to a
low-level method (ndarray(...)) for instantiating an array.
Most of the meat of...
curl POST format for CURLOPT_POSTFIELDS
...
EDIT: From php5 upwards, usage of http_build_query is recommended:
string http_build_query ( mixed $query_data [, string $numeric_prefix [,
string $arg_separator [, int $enc_type = PHP_QUERY_RFC1738 ]]] ...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...an it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information.
PyPy, as others have been quick to mention, has tenuous support for C extensions. It has support, but typically at slower-than-Python speeds and it's iffy at best. Hence a lot of modules sim...
Static Indexers?
...d be Encoding["Foo"]. I don't think it would come up very often, but aside from anything else it just feels a little inconsistent not to be available.
I would have to check, but I suspect it's available in IL (Intermediate Language) already.
...
Circular dependency in Spring
...ry#doGetBean
catch (BeansException ex) {
// Explicitly remove instance from singleton cache: It might have been put there
// eagerly by the creation process, to allow for circular reference resolution.
// Also remove any beans that received a temporary reference to the bean.
destroySing...
Differences between Java 8 Date Time API (java.time) and Joda-Time
...urthermore: Both libraries are inspired by the design study "TimeAndMoney" from Eric Evans or ideas from Martin Fowler about domain driven style so they strive more or less for a fluent programming style (although not always perfect ;-)).
c) With both libraries we get a real calendar date type (cal...
Difference between two lists
...d duplicates to be preserved, it would probably be easiest to create a set from list2 and use something like:
var list3 = list1.Where(x => !set2.Contains(x)).ToList();
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How to determine the memory footprint (size) of a variable?
...elopment WEB server and allows you debug your scripts locally or remotely, from an IDE or console and its features are:
Remote and local debugging
Explicit and implicit activation
Call stack, including function calls, dynamic and static method calls, with their parameters
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