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How can I remove an element from a list?
...du.au/R/help/05/04/1919.html
The key quote from there:
I do not find em>x m>plicit documentation for R on how to remove elements from lists, but trial and error tells me
myList[[5]] <- NULL
will remove the 5th element and then "close up" the hole caused by deletion of that element. That...
What JSON library to use in Scala? [closed]
...json.JSON - Warning this library is available only up to Scala version 2.9.m>x m> (removed in newer versions)
spray-json - Em>x m>tracted from the Spray project
Jerkson ± - Warning a nice library (built on top of Java Jackson) but now abandonware. If you are going to use this, probably follow the Scalding pr...
PostgreSQL array_agg order
...g the input values from a sorted subquery will usually work, however. For em>x m>ample:
SELECT m>x m>mlagg(m>x m>) FROM (SELECT m>x m> FROM test ORDER BY y DESC) AS tab;
So in your case you would write:
SELECT
array_to_string(array_agg(animal_name),';') animal_names,
array_to_string(array_agg(animal_type),';') ...
Why does (1 in [1,0] == True) evaluate to False?
...
Python actually applies comparison operator chaining here. The em>x m>pression is translated to
(1 in [1, 0]) and ([1, 0] == True)
which is obviously False.
This also happens for em>x m>pressions like
a < b < c
which translate to
(a < b) and (b < c)
(without evaluating b twice...
How to convert latitude or longitude to meters?
...), Math.sqrt(1-a));
var d = R * c;
return d * 1000; // meters
}
Em>x m>planation: https://en.wikipedia.org/wiki/Haversine_formula
The haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes.
...
Understanding em>x m>actly when a data.table is a reference to (vs a copy of) another data.table
...Some operations seem to 'break' the reference, and I'd like to understand em>x m>actly what's happening.
2 Answers
...
D3.js: what is 'g' in .append(“g”) D3.js code?
...t always enlightens: developer.mozilla.org/en/docs/Web/SVG/Element/g. An em>x m>perimental pen can be found here: codepen.io/ahujamoh/pen/brRpWM
– Mohit
Aug 10 '17 at 12:14
add a ...
Why can't the C# constructor infer type?
...g in. It also has to be better than spending that time and effort on bug fim>x m>ing, performance work, and other possible areas that we could put that effort. And ideally it has to fit in well to whatever the "theme" is of the release.
Furthermore, as you correctly note, you can get the benefits of thi...
How do I typedef a function pointer with the C++11 using syntam>x m>?
...
It has a similar syntam>x m>, em>x m>cept you remove the identifier from the pointer:
using FunctionPtr = void (*)();
Here is an Em>x m>ample
If you want to "take away the uglyness", try what m>X m>eo suggested:
#include <type_traits>
using FunctionPtr = ...
Why does Math.floor return a double?
...l to the argument and is equal to a mathematical integer". Given a value m>x m> > 2^53 that will not be the same as the value with its fractional part truncated. It may well be quite a bit smaller than that.
– Jim Garrison
Sep 5 '16 at 20:10
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