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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
... not authors. Authors must follow the author requirements. To quote How to read this specification:
In particular, there are conformance requirements that apply to producers, for example authors and the documents they create, and there are conformance requirements that apply to consumers, for ex...
hasNext in Python iterators?
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@LarsH: You mean e.g. an iterator that reads from a file that can be changed while reading from it? I agree that this can be a problem (which affects any library providing next() and hasNext() method, not just a hypothetical Python library). So yes, next() and has...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
...le on. All it has is a finite number of internal states, each of which can read a unit of input from the string being tested, and use that to decide which state to move to next. As special cases, it has two termination states: "yes, that matched", and "no, that didn't match".
HTML, on the other han...
input() error - NameError: name '…' is not defined
...aluates whatever your enter, as a Python expression. If you simply want to read strings, then use raw_input function in Python 2.7, which will not evaluate the read strings.
If you are using Python 3.x, raw_input has been renamed to input. Quoting the Python 3.0 release notes,
raw_input() was r...
How to use R's ellipsis feature when writing your own function?
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I read answers and comments and I see that few things weren't mentioned:
data.frame uses list(...) version. Fragment of the code:
object <- as.list(substitute(list(...)))[-1L]
mrn <- is.null(row.names)
x <- list(......
How does the HyperLogLog algorithm work?
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Didn't quite understand the paper until I read this. Now it makes sense.
– josiah
Dec 9 '14 at 22:00
5
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What is the best way to force yourself to master vi? [closed]
A good while ago, I read an article by the creator of viemu , clearing up a lot of the misconceptions about vi, as well as explaining why it's a good idea (and why it's been very popular for the last 30 years+). The same guy also has a great set of graphical cheat sheets that teach the basics a f...
Allowed characters in Linux environment variable names
...nderscore missing in the second set of square brackets: It should probably read: [a-zA-Z_][a-zA-Z0-9_]* For those like me who find the reference to bash-4.1 a little vague (616'000 lines of code), here are a few hints to find the relevant lines of code: subst.c: param_expand(), in the default case ...
Copy folder recursively in node.js
...copy a folder and all its content without manually doing a sequence of fs.readir , fs.readfile , fs.writefile recursively ?
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rsync: difference between --size-only and --ignore-times
... the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata and if it looks like it doesn't need to copy the file because size and timestamp match between ...