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Any reason why scala does not explicitly support dependent types?
...in Agda or Coq or Idris as intrinsics. I think this reflects a fixation on form over fundamentals to some extent, nevertheless, I'll try and show that Scala is a lot closer to these other languages than is typically acknowledged.
Despite the terminology, dependent sum types (also known as Sigma typ...
What is the difference between a JavaBean and a POJO?
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In mathematical terms, we can say that Javabeans form a subset of POJO, because, specific constraints put on a POJO makes it a Javabean.
– Nishit
May 18 '15 at 7:33
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Difference between \w and \b regular expression meta characters
... and the other is not a word character.
Simply put: \b allows you to perform a "whole words only" search using a regular expression in the form of \bword\b. A "word character" is a character that can be used to form words. All characters that are not "word characters" are "non-word characters".
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What is “missing” in the Visual Studio 2008 Express Editions?
...jects
No report creation tools
No Office development support
No mobile platform support
Limited set of designers
Limited set of database tools
No code profiling or test framework support
No MFC/ATL support
No support for compiling C++ to 64-bit images (workaround is to install Windows SDK which is f...
Color different parts of a RichTextBox string
...AppendText(message, Color.Blue);
box.AppendText(Environment.NewLine);
new Form {Controls = {box}}.ShowDialog();
Note that you may notice some flickering if you're outputting a lot of messages. See this C# Corner article for ideas on how to reduce RichTextBox flicker.
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What exactly is Arel in Rails 3.0?
...t that ARel has a proper object model for the queries means that it can perform optimizations on those queries long before it ever generates an actual SQL query.
will it be compatible with all major DBs? - I assume it will.
Yes. In fact, I always talked about SQL above, but actually a relational q...
JS: iterating over result of getElementsByClassName using Array.forEach
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Bear in mind the performance penalty over getElementByClassName
– Szabolcs Páll
Aug 30 '18 at 14:20
3
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Is a colon `:` safe for friendly-URL use?
...ery string in the request URL, while HTML constructs one when submitting a form with GET method. Whichever implemented in the real world wins at the end of the day.
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How can I check if a var is a string in JavaScript?
... are Strings (typeof always returns a String), JavaScript is defined to perform the same steps had I used === (strict comparison operator).
As Box9 mentions, this won't detect a instantiated String object.
You can detect for that with....
var isString = str instanceof String;
jsFiddle.
...or....
JavaScript unit test tools for TDD
...uraged to write their use cases to show and tell their API. Such use cases forms the basis of regression tests.
AVA
Futuristic test runner with built-in support for ES2015. Even though JavaScript is single-threaded, IO in Node.js can happen in parallel due to its async nature. AVA takes advantage o...