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Are HLists nothing more than a convoluted way of writing tuples?
...ations for HLists is abstracting over arity. Arity is typically statically known at any given use site of an abstraction, but varies from site to site. Take this, from shapeless's examples,
def flatten[T <: Product, L <: HList](t : T)
(implicit hl : HListerAux[T, L], flatten : Flatten[L]) :...
How to get Linux console window width in Python
... from it, and uses a simple string split to separate the coordinates.
Unlike the os.environ["COLUMNS"] value (which I can't access in spite of using bash as my standard shell) the data will also be up-to-date whereas I believe the os.environ["COLUMNS"] value would only be valid for the time of the ...
recursively add file extension to all files
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Stephan202Stephan202
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What is a regular expression which will match a valid domain name without a subdomain?
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Well, it's pretty straightforward a little sneakier than it looks (see comments), given your specific requirements:
/^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9]\.[a-zA-Z]{2,}$/
But note this will reject a lot of valid domains.
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“Could not find bundler” error
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Make sure you're entering "bundle" update, if you have the bundler gem installed.
bundle update
If you don't have bundler installed, do gem install bundler.
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What is Objective C++? [closed]
...s and C++ classes (two entirely unrelated entities). Your C++ code will work, just as before, and the resulting executable will be linked with the Objective-C runtime, so your Objective-C classes will work as well. You can definitely use it in Xcode -- name your files with the .mm extension.
Also, ...
bundle install returns “Could not locate Gemfile”
I'm new to Rails and am currently working through a guide.
The guide states:
9 Answers
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How do I correctly clean up a Python object?
... "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs properly?
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CSS to set A4 paper size
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I looked into this a bit more and the actual problem seems to be with assigning initial to page width under the print media rule. It seems like in Chrome width: initial on the .page element results in scaling of the page content i...
Find the files that have been changed in last 24 hours
...sub-directories:
find /directory_path -mtime -1 -ls
Should be to your liking
The - before 1 is important - it means anything changed one day or less ago.
A + before 1 would instead mean anything changed at least one day ago, while having nothing before the 1 would have meant it was changed exact...