This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
import ( | |
"fmt" | |
"sync" | |
) | |
func main() { | |
numbers := make(chan int, 10) | |
squares := make(chan int, 10) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
import ( | |
"fmt" | |
) | |
func main() { | |
myChan := make(chan string) | |
go func() { | |
fmt.Println(<-myChan) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class RequestJson { | |
protected String firstName; | |
protected String lastName; | |
// Getters and setters omitted | |
} | |
class ResponseJson extends RequestJson { | |
protected Integer userId; | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
julia> typeof([i for i = 1:nrow(ddf)]) | |
Array{Any,1} | |
julia> typeof([i for i = 1:10]) | |
Array{Int64,1} | |
julia> k = 10 | |
10 | |
julia> typeof([i for i = 1:k]) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
type Attr | |
vals | |
data | |
end | |
function cart_prod(sets...) | |
result_size = length(sets) | |
result_elems = reduce(*, 1, map(length, sets)) | |
result = zeros(result_elems, result_size) | |
scale_factor = result_elems |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# Do K simulation runs each with N items. The goal is to find the largest | |
# item in the list, without "remembering" and carrying along some previous | |
# maximum. | |
N = 10000 | |
K = 1000 | |
diffs = zeros(Int, K) | |
pct_diffs = zeros(Float64, K) | |
for i = 1:K |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function knn_normalize{T}(D::Array{T, 2}, mx::Array{T, 1}, mn::Array{T, 1}) | |
return mapslices(x -> (x - mn) ./ (mx - mn), D, 2) | |
end | |
function knn_normalize{T}(D::Array{T, 1}, mx::Array{T, 1}, mn::Array{T, 1}) | |
return (D - mn) ./ (mx - mn) | |
end | |
function knn_maxmin{T}(D::Array{T, 2}) | |
mx = vec(mapslices(maximum, D, 1)) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
using StatsBase | |
function knn(k, train, classes, obs) | |
nearest = sortperm(vec(sqrt(sum(broadcast((a, b) -> (a-b)^2, obs, train), 2))))[1:k] | |
return mode(classes[nearest]) | |
end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
""" | |
Contouring using the Marching Squares algorithm. | |
George Lesica | |
""" | |
from cairo import SVGSurface, Context | |
WIDTH = 8 * 72.0 | |
HEIGHT = 8 * 72.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# contour(A, v) | |
# Implements the Marching Squares contouring algorithm (see: | |
# https://en.wikipedia.org/wiki/Marching_squares for details). The | |
# matrix `A` is an m x n scalar field and the scalar `v` is the | |
# value to be contoured. The return value is an (m-1) x (n-1) matrix | |
# of contour line type indices (see the Wikipedia article). | |
# TODO: Implement in parallel | |
function contour(A, v) | |
rows, cols = size(A) |