simeonschaub

### A Pluto.jl notebook ###
# v0.16.1

using Markdown
using InteractiveUtils

# ╔═╡ d00d6ce7-6cb2-4a8e-a119-aafe2d372a77
function stencil(kernel_f!, N)
	A = reshape(BandedMatrix(Zeros(N^2, N^2), (N+1, N+1)), N, N, N, N)
	_A = PaddedArray(A, 0)

simeonschaub

(rows, cols) = (2, 2)
BenchmarkTools.Trial: 
  memory estimate:  0 bytes
  allocs estimate:  0
  --------------
  minimum time:     16.041 ns (0.00% GC)
  median time:      16.074 ns (0.00% GC)
  mean time:        16.189 ns (0.00% GC)
  maximum time:     104.773 ns (0.00% GC)
  --------------

simeonschaub

using ChainRulesCore
import ChainRulesCore: wirtinger_primal, wirtinger_conjugate
using ChainRulesCore: AbstractDifferential
using FiniteDifferences
using Test

abs_to_pow(x, p) = abs(x)^p
@scalar_rule(abs_to_pow(x::Real, p),
             (p == 0 ? Zero() : p * abs_to_pow(x, p-1) * sign(x), Ω * log(abs(x))))
@scalar_rule(

simeonschaub

using Cassette, Test
using Cassette: @context, enabletagging, @overdub, overdub, recurse,
                hasmetadata, metadata, tag, untag
using ChainRules: frule, Zero, extern

@context DiffCtx

Cassette.metadatatype(::Type{<:DiffCtx}, ::Type{T}) where {T<:Real} = T

function D(f, x)

simeonschaub

<link rel="import" href="../core-icon-button/core-icon-button.html">
<link rel="import" href="../core-toolbar/core-toolbar.html">
<link rel="import" href="../core-header-panel/core-header-panel.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;

simeonschaub

<link rel="import" href="../paper-ripple/paper-ripple.html">

<polymer-element name="name-card" attributes="first, name, color, href">

  <template>
    <style>    
      #core_card {
        position: absolute;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;