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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...
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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 ...
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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) share...
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What are the differences between vector and list data types in R?

... 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...
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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...
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Jump to matching XML tags in Vim

... 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...
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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...
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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...
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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...
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Use NUnit Assert.Throws method or ExpectedException attribute?

... https://github.com/nunit/docs/wiki/Breaking-Changes How to use: https://www.nunit.org/index.php?p=exceptionAsserts&r=2.5 share | improve this answer | follow ...