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Byron Ellacott codebje

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codebje / Mzero.hs
Last active Oct 26, 2015
Monoid with zero element
View Mzero.hs
module Mzero where
import Data.Monoid
class Monoid a => MonoidZ a where
zero :: a
mconcat :: (Eq a) => [a] -> a
mconcat = go
where
@codebje
codebje / asn-by-iso.json
Last active Aug 29, 2015
Polar coordinates under tension
View asn-by-iso.json
{"GL":[8818],"DJ":[30990,327779,327831],"JM":[3586,10292,11580,22306,30689,33576,35878,40143,63094],"PG":[17828,38009,45826,45924,55792,55829,58460,63945,132216,133137],"AT":[679,760,1109,1110,1111,1112,1113,1114,1115,1116,1117,1205,1764,1776,1853,1901,1921,2036,2049,2494,2604,2871,3190,3201,3248,3330,5385,5403,5404,5405,5423,5424,5595,6720,6798,6830,6883,8245,8333,8339,8387,8412,8437,8445,8447,8514,8540,8547,8559,8562,8596,8692,8787,8832,8971,8992,9023,12311,12382,12401,12447,12453,12547,12577,12585,12605,12614,12635,12656,12762,12766,12793,12878,12895,12930,12971,12991,13008,13022,13026,13042,13051,13064,13068,13292,13298,15498,15554,15655,15702,15733,15824,15872,15910,15927,15939,15942,16008,16049,16051,16081,16099,16105,16172,16195,16305,16314,16364,16381,20537,20684,20704,20751,20863,20935,21013,21039,21078,21079,21213,21262,21285,21303,21360,21362,21393,21406,24643,24647,24656,24708,24777,24792,24847,24864,24953,24992,25011,25012,25056,25069,25089,25126,25255,25268,25294,25445,25447,25522,25575,28701,28
View JdbcStreamsExample.java
Set<String> results = jdbcStream.streamQuery("SELECT * FROM test_data", stream -> stream
.map(row -> row.getString("entry"))
.filter(s -> Character.isAlphabetic(s.charAt(0)))
.collect(Collectors.toSet()));
View JdbcStreams.java
public <T> T streamQuery(String sql, Function<Stream<SqlRowSet>, ? extends T> streamer, Object... args) {
return jdbcTemplate.query(sql, resultSet -> {
final SqlRowSet rowSet = new ResultSetWrappingSqlRowSet(resultSet);
final boolean parallel = false;
// The ResultSet API has a slight impedance mismatch with Iterators, so this conditional
// simply returns an empty iterator if there are no results
if (!rowSet.next()) {
return streamer.apply(StreamSupport.stream(Spliterators.emptySpliterator(), parallel));
}
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codebje / optional.c
Last active Aug 29, 2015
A badly written monad in C
View optional.c
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define OPTIONAL_INIT(t) typedef struct optional_ ## t { short isPresent; t value; } optional_ ## t
#define OPTIONAL(t) optional_ ## t
static short _optional_empty = 0;
struct optional_any { short isPresent; int value; };
View index.html
<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>
var width = 960,
height = 500;