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What is Func, how and when is it used
... thing about it is the Extension attribute which is only read by the C#/VB.Net compilers, not CLR. Basically, instance methods (unlike static functions) have a hidden 0th "this" parameter. So, 1-argument instance method is very similar to 2-argument static function. Then, we have delegates which sto...
NSDate get year/month/day
...n comparing the dates rather than the pointers. Fundamentally C# and the .NET framework were designed to make the most common scenarios easier, thus making programmers more productive, and in many cases objective-c feels like it makes things intentionally more arduous. If you have time to read an ...
In what cases will HTTP_REFERER be empty
... when using curl
-e, --referer
Spoofing http_referer wth telnet
telnet www.yoursite.com 80 (press return)
GET /index.html HTTP/1.0 (press return)
Referer: http://www.hah-hah.com (press return)
(press return again)
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What are the differences between vector and list data types in R?
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This and similar introductory questions are answered in http://www.burns-stat.com/pages/Tutor/hints_R_begin.html
It is meant to be a gentle introduction that gets you up and running with R as quickly as possible. To some extent it succeeds.
--- Edit: --
An attempt to explain further...
Citing the author of a blockquote using Markdown syntax
...urces.
> -- <cite>[Albert Einstein][1]</cite>
[1]: http://www.quotedb.com/quotes/2112
If you have a style manual, use its guidelines to determine exactly where to place the citation, etc.
Output of Markdown + Smartypants for the above is
The secret to creativity is knowing ho...
Jump to matching XML tags in Vim
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There is a vim plugin called matchit.vim . You can find it here: http://www.vim.org/scripts/script.php?script_id=39 . It was created pretty much the exact purpose you describe.
Install that, place your cursor on the body of the tag (not the <>, else it'll match those) and press % to jump t...
Does Typescript support the ?. operator? (And, what's it called?)
...it is supported as of TypeScript 3.7 and called Optional chaining: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining
I can't find any reference to it whatsoever in the TypeScript language specification.
As far as what to call this operator in CoffeeSc...
Absolute vs relative URLs
...sume the website is running from the following location on the server /var/www/mywebsite.
http://yourdomain.com/images/example.png
The above (absolute) URL tries to access the resource /var/www/website/images/example.png. This type of URL is something you would always want to avoid for requesting re...
Is Redis just a cache?
... most recent questions to display on the home page. If you were writing a .NET or Java program, you would store the questions in a List. Turns out, that is the best way to store this in Redis as well.
Every time someone asks a question, we add its id to the list.
$ lpush questions question:1
(in...
Use NUnit Assert.Throws method or ExpectedException attribute?
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https://github.com/nunit/docs/wiki/Breaking-Changes
How to use:
https://www.nunit.org/index.php?p=exceptionAsserts&r=2.5
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