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What is 'Pattern Matching' in functional languages?
...nstead of assignment.
Long answer: Pattern matching is a form of dispatch based on the “shape” of the value that it's given. In a functional language, the datatypes that you define are usually what are known as discriminated unions or algebraic data types. For instance, what's a (linked) list...
Multiline Comment Workarounds?
... an interactive environment (i.e.: command-line) rather than mostly a file-based interpreter where multi-line comments would be more common. So not philosophical -- it has grown this way.
– Dirk Eddelbuettel
Aug 6 '09 at 22:04
...
What is a plain English explanation of “Big O” notation?
...mparison between algorithms to a single variable. That variable is chosen based on observations or assumptions. For example, sorting algorithms are typically compared based on comparison operations (comparing two nodes to determine their relative ordering). This assumes that comparison is expensi...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
...he code to be understood by coworkers I'll have to default to a more logic-based approach. Thank you though, your answer has made my day.
– Ollie Glass
Aug 2 '11 at 11:53
...
Why use Ruby instead of Smalltalk? [closed]
...n.As an aside, Java was not the easiest thing to interface with other code bases (JNI is fairly clumsy), but that did not stop it from gaining mindshare. IMO the interfacing argument is significant - ease of embedding hasn't hurt Python - but this argument only holds moderate weight as not all appl...
What is correct HTTP status code when redirecting to a login page?
...
Hypertext Transfer Protocol (HTTP) Authentication Scheme
Registry
Cookie-based HTTP Authentication - DRAFT
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How to compute the sum and average of elements in an array?
...ngth; i++ ){
sum += parseInt( elmt[i], 10 ); //don't forget to add the base
}
var avg = sum/elmt.length;
document.write( "The sum of all the elements is: " + sum + " The average is: " + avg );
Just iterate through the array, since your values are strings, they have to be converted to an inte...
Nullable vs. int? - Is there any difference?
...d override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<MyEntity>().Property(x => x.MyNullableInt).IsOptional();
}
}
On the other hand, if you declare your entity like:
public class MyEntity
{
pub...
Attach IntelliJ IDEA debugger to a running Java process
...at-juli.jar
Java Options:
-Dcatalina.home=C:\tomcat
-Dcatalina.base=C:\tomcat
-Djava.io.tmpdir=C:\tomcat\temp
-Djava.util.logging.config.file=C:\tomcat\conf\logging.properties
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000
Java 9 options:
--add-...
How do I convert CamelCase into human-readable names in Java?
...onversion is done a lot of times this method is much faster than the regex-based one: this is my benchmark for executing the aforementioned tests 100,000 times: ``` regex-based method took 4820 milliseconds ////////// commons-lang-based method took 232 milliseconds ``` that's about 20 times faster...