init

.github/workflows/presos.yml

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+on:
+  push:
+    branches:
+      - presos
+
+jobs:
+  build-and-upload:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+
+      - run: npm install
+
+      - run: npx @marp-team/marp-cli dev2next_2024.md
+
+      - run: npx @marp-team/marp-cli --pdf dev2next_2024.md
+
+      - run: |
+          mkdir _site
+          cp *.html _site/
+          cp *.pdf _site/
+
+      - name: setup pages
+        uses: actions/configure-pages@v5
+
+      - name: upload artifact
+        uses: actions/upload-pages-artifact@v3
+
+  deploy-pages:
+    runs-on: ubuntu-latest
+    needs: build-and-upload
+    permissions:
+      pages: write
+      id-token: write
+    steps:
+      - id: deployment
+        name: deploy pages
+        uses: actions/deploy-pages@v4
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}

.gitignore

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+/node_modules/
+/.idea/

.marprc.yml

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+options:
+  markdown:
+    html: true

README.md

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+# Effect Oriented Programming
+
+The slides use MARP, a Node thingy to turn markdown into HTML slides.
+
+Usage:
+
+```
+npm install
+
+# Server with hot-reload
+npx @marp-team/marp-cli -s .
+```

dev2next_2024.md

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+## Effect Oriented Programming
+
+#### James Ward
+*Developer Advocate @ AWS*
+<a href="https://twitter.com/_JamesWard?ref_src=twsrc%5Etfw" class="twitter-follow-button" data-size="large">@_JamesWard</a><script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+
+---
+
+## What are side effects?
+
+- What challenges do they create?
+- Why are they difficult to compose / chain / test?
+- Signs of side-effects (e.g. Unit).
+
+---
+
+## Managing unpredicability with Effects & Effect Systems
+
+