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How to save a data.frame in R?
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There is also dump and files created would be source()-ed, although the help(dump) page says save is "safer".
– IRTFM
Dec 1 '11 at 17:44
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Embedding SVG into ReactJS
... any namespaced (colon-separated) attribute, e.g. xlink:href, remove the : and capitalize the second part of the attribute, e.g. xlinkHref. Here’s an example of an svg with <defs>, <use>, and inline styles:
function SvgWithXlink (props) {
return (
<svg
width...
How to convert a java.util.List to a Scala list
... edited Dec 3 '15 at 18:44
Andrew Whitaker
116k2727 gold badges268268 silver badges292292 bronze badges
answered Oct 24 '15 at 1:16
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Rounding DateTime objects
...t you round to any interval given. It's also slightly faster than dividing and then multiplying the ticks.
public static class DateTimeExtensions
{
public static DateTime Floor(this DateTime dateTime, TimeSpan interval)
{
return dateTime.AddTicks(-(dateTime.Ticks % interval.Ticks));
}
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String Concatenation using '+' operator
Looking at the string class metadata, I only see the operators == and != overloaded. So how is it able to perform concatenation for the ' + ' operator?
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Dictionaries and default values
...nguage is that the interpreter would be able to 'see' inside the functions and optimize it - that the user wouldn't have to deal with micro-optimizations as much. Isn't that what things like JIT compilation are for?
– nishantjr
Oct 27 '14 at 7:32
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Adding code to a javascript function programmatically
...de. This code loads in a few external JS files which I do have access to, and what I'd like to do is change one of the functions contained in the original file without copying and pasting the whole thing into the second JS file.
So for example, the off limits JS might have a function like this:
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codestyle; put javadoc before or after annotation?
... before or after the annotation. What would we want to adopt as a coding standard?
5 Answers
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How to check if std::map contains a key without doing insert?
The only way I have found to check for duplicates is by inserting and checking the std::pair.second for false , but the problem is that this still inserts something if the key is unused, whereas what I want is a map.contains(key); function.
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Difference between len() and .__len__()?
...y calling an object's __len__ method. __something__ attributes are special and usually more than meets the eye, and generally should not be called directly.
It was decided at some point long ago getting the length of something should be a function and not a method code, reasoning that len(a)'s mean...