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How to concatenate items in a list to a single string?
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Didn't understand, what's the '-' on the left supposed to be??
– Lawrence DeSouza
Apr 2 '14 at 23:46
5
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Comma separator for numbers in R?
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This is a very late response, and it may have been true in the past that comma_format didn't handle real numbers but now you can do the following: scales::comma_format(digits = 12)(1000000.789) which results in the following: "1,000,000.789".
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How to iterate over the files of a certain directory, in Java? [duplicate]
...ectoryListing) {
// Do something with child
}
} else {
// Handle the case where dir is not really a directory.
// Checking dir.isDirectory() above would not be sufficient
// to avoid race conditions with another process that deletes
// directories.
}
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Python ValueError: too many values to unpack [duplicate]
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self.materials is a dict and by default you are iterating over just the keys (which are strings).
Since self.materials has more than two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, t...
How can I remove the string “\n” from within a Ruby string?
...quote marks behave differently.
Double quotes " allow character expansion and expression interpolation ie. they let you use escaped control chars like \n to represent their true value, in this case, newline, and allow the use of #{expression} so you can weave variables and, well, pretty much any ru...
How to get the first element of the List or Set? [duplicate]
... for most implementations of Set. This may have meaning for LinkedHashSet and TreeSet, but not for HashSet.)
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Multi-key dictionary in c#? [duplicate]
...<T1,T2>(item1, item2);
}
}
You get immutability, .GetHashcode and .Equals for free, which (while you're waiting for C# 4.0) is nice 'n simple...
One warning however: the default GetHashcode implementation (sometimes) only considers the first field so make sure to make the first field t...
Calculating sum of repeated elements in AngularJS ng-repeat
...repeat . For each element in the array, it shows the item name, its amount and the subtotal ( product.price * product.quantity ).
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What is the maximum length of a URL in different browsers?
...under 2000 characters, they'll work in virtually any combination of client and server software.
If you are targeting particular browsers, see below for more details specific limits.
Longer answer - first, the standards...
RFC 2616 (Hypertext Transfer Protocol HTTP/1.1) section 3.2.1 says
The HTTP p...
Parsing boolean values with argparse
I would like to use argparse to parse boolean command-line arguments written as "--foo True" or "--foo False". For example:
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