...y I see so many examples use the varkeyword and got the answer that while it is only necessary for anonymous types, that it is used nonetheless to make writing code 'quicker'/easier and 'just because'. ...

...ewtype T a = T (a -> Int) You can make a contravariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed: fmap :: Functor f => (a -> b) -> f a -> f b contramap :: Contravariant f ...

... I have found already a pretty nice example here , but rather how to make it work. In fact, I am unable to load library rgdal : ...

In order to make a page dirty (switching on the dirty bit in the page table entry), I touch the first bytes of the page like this: ...

...version name of my apk from the AndroidManifest.xml file after downloading it and without installing it. 8 Answers ...

I recently started wondering about sites like http://thismachine.info/ that get the user's operating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out. ...

...le you've saved is utf-8. The default for Python 2 is ASCII (for Python 3 it's utf-8). This just affects how the interpreter reads the characters in the file. In general, it's probably not the best idea to embed high unicode characters into your file no matter what the encoding is; you can use st...

...rget: :_blank parameter should be a parameter of link_to, whereas you put it in image_tag parameters. Modify your code like this: <%= link_to image_tag("facebook.png", class: :facebook_icon, alt: "Facebook"), "http://www.facebook.com/mypage", target: :_blank %> Or with a block: <%= lin...

...and b = [1,1,3,5,6] then the intersection is [1,1,3,5] but by above method it will result in only one 1 i.e. [1, 3, 5] what will be the write way to do it then? – Nitish Kumar Pal Oct 10 '18 at 5:18 ...

...follow | edited Aug 20 '19 at 18:13 AustinWBryan 2,86133 gold badges1616 silver badges3535 bronze badges ...