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Quickly reading very large tables as dataframes
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Hector Haffenden
1,09855 silver badges2121 bronze badges
answered Nov 13 '09 at 10:35
Richie CottonRichie Cotton
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How does type Dynamic work and how to use it?
...ala> val d = new DynImpl
d: DynImpl = DynImpl@7711a38f
scala> d.foo
java.lang.RuntimeException: method not found
scala> d.foo = 10
d.foo: Any = 10
scala> d.foo
res56: Any = 10
The code works as expected - it is possible to add methods at runtime to the code. On the other side, the c...
Avoiding if statement inside a for loop?
...lt;'\n'; });
}
This code is not perfect but you get the idea.
In old C++98 it looks like this:
#include <iostream>
#include <vector>
using namespace std;
struct with_index {
void operator()(ostream& out, vector<int>::size_type i, int e) {
out << i << '\t'...
How to overload std::swap()
...phase lookup" for templates.
If your compiler is conforming (to any of C++98/03/11), then it will give the same output I show. And in that case exactly what you fear will happen, does happen. And putting your swap into namespace std (exp) did not stop it from happening.
Dave and I are both commi...
CSS filter: make color image with transparency white
...5hFFfHcgkv5SOZ9mbvxIgwGaZl+8ULGcJ8zOsJa9R1r9B2d8v2eGb1KNieqBhLNz8ekyAoV3VAX985+FvSXEenF8lf9lA7DUUxa0HUl/RTG1EfOUQmUwwCtggDewiHmc1R+Ir/MfKJz/f9tTwn31Nf7qVxlHLR6qXwg7cHXqU/p4hPdUB6Lp55TiXwDYTsrpG12dbdY5t0WLrCSRSVjIItG0dqIAG2jHwlPTmvQdsL3Ajjg3nAq3zIgdS98ZiGV0MJZeWVJs2WNWIJK5hcLh0osuqVTxIAdi6X3w/0LFGoa+...
Add legend to ggplot2 line plot
...(fecha = structure(c(1317452400, 1317538800, 1317625200,
1317711600, 1317798000, 1317884400, 1317970800, 1318057200, 1318143600,
1318230000, 1318316400, 1318402800, 1318489200, 1318575600, 1318662000,
1318748400, 1318834800, 1318921200, 1319007600, 1319094000), class = c("POSIXct",
"POSIXt"), tz...
Loop through an array in JavaScript
In Java you can use a for loop to traverse objects in an array as follows:
40 Answers
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Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
...xxxxxxx/assets/fonts/my-cool-font.ttf
HTTP/1.1 200 OK
x-amz-id-2: Ay63Qb5uR98ag47SRJ91+YALtc4onRu1JUJgMTU98Es/pzQ3ckmuWhzzbTgDTCt+
x-amz-request-id: F1FFE275C0FBE500
Date: Thu, 14 Aug 2014 09:39:40 GMT
Access-Control-Allow-Origin: https://example.com
Access-Control-Allow-Methods: GET
Access-Control-...
Adding a Method to an Existing Object Instance
...t "bar"
...
>>> a = A()
>>> foo
<function foo at 0x00A98D70>
>>> a.bar
<bound method A.bar of <__main__.A instance at 0x00A9BC88>>
>>>
Bound methods have been "bound" (how descriptive) to an instance, and that instance will be passed as the firs...
MongoDB/NoSQL: Keeping Document Change History
...list(users.revisions({"username": "darth_later"}))
# [{'_id': ObjectId('5d98c3385d8edadaf0bb845b'),
# 'username': 'darth_later',
# 'email': 'darthlater@example.com',
# '_revision_metadata': None},
# {'_id': ObjectId('5d98c3385d8edadaf0bb845b'),
# 'username': 'darth_later',
# 'email': 'da...