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What is “2's Complement”?
... community wiki
2 revs, 2 users 98%ForDummies
1
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Quickly reading very large tables as dataframes
...
Hector Haffenden
1,09855 silver badges2121 bronze badges
answered Nov 13 '09 at 10:35
Richie CottonRichie Cotton
...
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+...
How are zlib, gzip and zip related? What do they have in common and how are they different?
...ERSE (new)
19 - IBM LZ77 z Architecture (PFS)
97 - WavPack compressed data
98 - PPMd version I, Rev 1
Methods 1 to 7 are historical and are not in use. Methods 9 through 98 are relatively recent additions and are in varying, small amounts of use. The only method in truly widespread use in the ZIP...
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...
Regular expression for floating point numbers
...ore numbers within a target string. So given the input:
apple 1.34 pear 7.98 version 1.2.3.4
The regex will match 1.34, 7.98, 1.2, .3 and .4.
To validate that a given input is a number and nothing but a number, "snap" the expression to the start and end of the input by wrapping it in anchor tags...
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...