Merge pull request #74 from beman-project/set-up-codespaces

added container definitions and an example to play with

Author: dietmarkuehl

.devcontainer/Dockerfile

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+FROM mcr.microsoft.com/devcontainers/cpp:1-ubuntu-22.04
+
+USER vscode
+
+# Install latest cmake
+RUN wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | gpg --dearmor - | sudo tee /usr/share/keyrings/kitware-archive-keyring.gpg >/dev/null
+RUN echo 'deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ jammy main' | sudo tee /etc/apt/sources.list.d/kitware.list >/dev/null
+RUN sudo apt-get update && sudo apt-get install -y cmake
+
+# Install pre-commit
+RUN sudo apt-get install -y python3-pip && pip3 install pre-commit
+
+# Avoid ASAN Stalling
+# Alternative is to update to clang-18 and gcc-13.2
+
+RUN sudo sysctl -w vm.mmap_rnd_bits=28

.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/cpp
+
+{
+	"name": "Beman Project Generic Devcontainer",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"postCreateCommand": "bash .devcontainer/postcreate.sh",
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-vscode.cpptools",
+				"ms-vscode.cmake-tools"
+			]
+		}
+	}
+}

.devcontainer/postcreate.sh

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+# Setup pre-commit
+pre-commit
+pre-commit install

examples/CMakeLists.txt

@@ -6,6 +6,7 @@
 list(
   APPEND
   EXAMPLES
+  playground
   sender-demo
   when_all-cancel
   stop_token

examples/playground.cpp

@@ -0,0 +1,22 @@
+// examples/playground.cpp                                            -*-C++-*-
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include <beman/execution26/execution.hpp>
+#include <iostream>
+#include <string>
+#include <tuple>
+
+namespace ex = ::beman::execution26;
+
+// ----------------------------------------------------------------------------
+
+int main()
+{
+    auto[result] = ex::sync_wait(
+        ex::when_all(
+            ex::just(std::string("hello, ")),
+            ex::just(std::string("world"))
+        ) | ex::then([](auto s1, auto s2){ return s1 + s2; })
+        ).value_or(std::tuple(std::string("oops")));
+    std::cout << "result='" << result << "'\n";
+}