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Final arguments in interface methods - what's the point?
...t seem like there's any point to it. According to the Java Language Specification 4.12.4:
Declaring a variable final can serve
as useful documentation that its value
will not change and can help avoid
programming errors.
However, a final modifier on a method parameter is not mentioned in...
Count, size, length…too many choices in Ruby?
I can't seem to find a definitive answer on this and I want to make sure I understand this to the "n'th level" :-)
6 Answe...
Why is Maven downloading the maven-metadata.xml every time?
... get when my internet connection is flanky when trying to build a web application with maven.
5 Answers
...
In MySQL queries, why use join instead of where?
It seems like to combine two or more tables, we can either use join or where. What are the advantages of one over the other?
...
Using mixins vs components for code reuse in Facebook React
... project and so far it's going really well.
However, I noticed some duplication creeping into my React code.
2 Answers
...
std::next_permutation Implementation Explanation
...tation to the next? Firstly, let's look at things a little differently. We can view the elements as digits and the permutations as numbers. Viewing the problem in this way we want to order the permutations/numbers in "ascending" order.
When we order numbers we want to "increase them by the smallest...
What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?
... relationship provides navigational access in both directions, so that you can access the other side without explicit queries. Also it allows you to apply cascading options to both directions.
Note that navigational access is not always good, especially for "one-to-very-many" and "many-to-very-many...
How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
How can I make any use of PYTHONPATH? When I try to run a script in the path the file is not
found. When I cd to the directory holding the script the script runs. So what good is the
PYTHONPATH?
...
How to make a promise from setTimeout
...for outdated environments like IE8-IE11). The syntax they went with uses a callback you pass into the Promise constructor (the Promise executor) which receives the functions for resolving/rejecting the promise as arguments.
First, since async now has a meaning in JavaScript (even though it's only a...
What is the apply function in Scala?
...ematicians have their own little funny ways, so instead of saying "then we call function f passing it x as a parameter" as we programmers would say, they talk about "applying function f to its argument x".
In mathematics and computer science, Apply is a function that applies
functions to argu...