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Type Checking: typeof, GetType, or is?
...t;Animal> and returns "Animal".
Foo((Animal)definitely_a_dog); // this does the same as above, returns "Animal"
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CSS Selector “(A or B) and C”?
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is there a better syntax?
No. CSS' or operator (,) does not permit groupings. It's essentially the lowest-precedence logical operator in selectors, so you must use .a.c,.b.c.
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Change an HTML5 input's placeholder color with CSS
... simple pseudo-element ::placeholder [Ref]
Internet Explorer 9 and lower does not support the placeholder attribute at all, while Opera 12 and lower do not support any CSS selector for placeholders.
The discussion about the best implementation is still going on. Note the pseudo-elements act like ...
How can I embed a YouTube video on GitHub wiki pages?
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The iframe does not work for wiki pages, only this solution currently works.
– Tyler Rinker
Mar 11 '14 at 15:24
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C++ wait for user input [duplicate]
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system("pause") does not work on linux/unix, I would specify that in the answer.
– Zimano
Jan 29 '16 at 11:48
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Static hosting on Amazon S3 - DNS Configuration
...vice. Some DNS providers offer this service along with their DNS (godaddy does, amazon route53 does not. Not sure about 123-reg)
If your DNS provider doesn't do it, there are a few free services. One that I've used is http://wwwizer.com/naked-domain-redirect - it doesn't require any registration...
jQuery If DIV Doesn't Have Class “x”
In jQuery I need to do an if statement to see if $this doesn't contain the class '.selected'.
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c# datatable to csv
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This method doesnt take into account a comma inside a column value.
– Christian
Nov 1 '12 at 22:32
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Why is `[` better than `subset`?
...larification? When we write subset(mtcars, cyl == 4) (at top level), where does R look for cyl? If it looks into the mtcars object that is passed to subset(), then shouldn't it be able to find cyl even if scramble is within another function, since mtcars is still being passed to it? If my question d...
Execution of Python code with -m option or not
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What actually does command PYTHONPATH=test python -m foo.bar mean? Could you explain it in details, please?
– Andriy
Apr 28 '17 at 16:47
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