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How can I generate UUID in C#
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I have a GitHub Gist with a Java like UUID implementation in C#:
https://gist.github.com/rickbeerendonk/13655dd24ec574954366
The UUID can be created from the least and most significant bits, just like in Java. It also exposes them. The implementation h...
Should unit tests be written for getter and setters?
...us book 'The Art Of Unit Testing' says:
Properties (getters/setters in Java) are good examples of code that usually doesn’t contain any logic, and doesn’t require testing. But watch out: once you add any check inside the property, you’ll want to make sure that logic is being tested.
...
Explaining Python's '__enter__' and '__exit__'
... that need to be initialized and at some point, tear downed (disposed). In Java 7 and above we have automatic resource management that takes the form of:
//Java code
try (Session session = new Session())
{
// do stuff
}
Note that Session needs to implement AutoClosable or one of its (many) sub-...
Defining custom attrs
...Layout>
parse the class in your view initialization code .../src/main/java/.../MyCustomView.kt
class MyCustomView(
context:Context,
attrs:AttributeSet)
:View(context,attrs)
{
// parse XML attributes
....
private val giveMeAClass:SomeCustomInterface
init
...
Database development mistakes made by application developers [closed]
... language struggles to deal with problems that are trivial in langues like Java, C#, Delphi etc.
This lack of understanding manifests itself in a few ways.
Inappropriately imposing too much procedural or imperative logic on the databse.
Inappropriate or excessive use of cursors. Especially when a...
Configuring Log4j Loggers Programmatically
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If someone comes looking for configuring log4j2 programmatically in Java, then this link could help: (https://www.studytonight.com/post/log4j2-programmatic-configuration-in-java-class)
Here is the basic code for configuring a Console Appender:
ConfigurationBuilder<BuiltConfiguration> ...
The difference between fork(), vfork(), exec() and clone()
...ng processes with a huge memory footprint to run some small program (think Java's Runtime.exec()). POSIX has standardized the posix_spawn() to replace these latter two more modern uses of vfork().
posix_spawn() does the equivalent of a fork()/execve(), and also allows some fd juggling in between. It...
In C#, why is String a reference type that behaves like a value type?
...(struct handling was inefficient in .NET 1.0, and it was natural to follow Java, in which strings were already defined as a reference, rather than primitive, type. Plus, if string were a value type then converting it to object would require it to be boxed, a needless inefficiency).
...
What is a plain English explanation of “Big O” notation?
... × 2 × 1 = 5040
…
25! = 25 × 24 × … × 2 × 1 = 15,511,210,043,330,985,984,000,000
…
50! = 50 × 49 × … × 2 × 1 = 3.04140932 × 1064
So the Big-O of the Traveling Salesman problem is O(n!) or factorial or combinatorial complexity.
By the time you get to 200 towns there isn't enough ...
URL matrix parameters vs. query parameters
... were appended to when injecting with @MatrixParam. According to "Restful Java with JAX-RS 2.0", a request like "GET /mercedes/e55;color=black/2006/interior;color=tan" would have an ambiguous definition of the color matrix param. Although it looks like if you process each PathSegment individually ...