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Should I use single or double colon notation for pseudo-elements?
... though the rest of the selector may look reasonable in CSS 2.1.
http://www.w3.org/TR/CSS2/syndata.html#rule-sets
You could however use
.foo:after { /*styles*/ }
.foo::after { /*styles*/ }
On the other hand this is more verbose than necessary; for now, you can stick with the one-colon notatio...
A cron job for rails: best practices?
...ht
# (see "man 5 crontab" in your terminal)
end
To learn more: https://github.com/jmettraux/rufus-scheduler
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Fast permutation -> number -> permutation mapping algorithms
....1
("The Lehmer code (inversion table)", p.232ff) of the fxtbook:
http://www.jjj.de/fxt/#fxtbook
skip to section 10.1.1.1 ("Computation with large arrays" p.235) for the fast method.
The (GPLed, C++) code is on the same web page.
...
Extracting text from HTML file using Python
... return '<a href="%s">%s</a>' % (t, t)
return re.sub(r'https?://[^] ()"\';]+|[&\'"<>]', f, text)
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How to convert std::string to lower case?
...ose. Better use boost::locale::to_lower when UTF-8 is involved. See http://www.boost.org/doc/libs/1_51_0/libs/locale/doc/html/conversions.html
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removeEventListener on anonymous functions in JavaScript
...ner( 'click', () => {
alert( 'only once!' );
}, { once: true } );
https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Parameters
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Why is __dirname not defined in node REPL?
... = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
https://nodejs.org/api/esm.html#esm_no_require_exports_module_exports_filename_dirname
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Specifying a custom DateTime format when serializing with Json.Net
...e DateTimeFormat string uses the .NET format string syntax described here: https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings
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Print all properties of a Python Class [duplicate]
...
Another way is to call the dir() function (see https://docs.python.org/2/library/functions.html#dir).
a = Animal()
dir(a)
>>>
['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__',
'__hash__', '__init__', '__module__', '__new__...
How to create a new object instance from a Type
...com/en-us/library/system.activator.createinstance.aspx
or (new path)
https://docs.microsoft.com/en-us/dotnet/api/system.activator.createinstance
Here are some simple examples:
ObjectType instance = (ObjectType)Activator.CreateInstance(objectType);
ObjectType instance = (ObjectType)Activato...