[wip] more stuff

.gitignore

@@ -1,16 +1,6 @@
-# output output
+*
-build/
+!CMakeLists.txt
-
+!*.cpp
-# cmake general
+!*.hpp
-CMakeLists.txt.user
+!include/
-CMakeCache.txt
+!.gitignore
-CMakeFiles
-CMakeScripts
-Testing
-Makefile
-cmake_install.cmake
-install_manifest.txt
-compile_commands.json
-CTestTestfile.cmake
-_deps
-Footer

.vscode/settings.json

@@ -1,6 +1,64 @@
 {
-    "cmake.sourceDirectory": "${workspaceFolder}/v1",
+    "cmake.sourceDirectory": "${workspaceFolder}/.",
     "files.associations": {
-        "vector": "cpp"
+        "vector": "cpp",
+        "algorithm": "cpp",
+        "chrono": "cpp",
+        "limits": "cpp",
+        "random": "cpp",
+        "cstdlib": "cpp",
+        "__bit_reference": "cpp",
+        "__split_buffer": "cpp",
+        "initializer_list": "cpp",
+        "iterator": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "__config": "cpp",
+        "__debug": "cpp",
+        "__errc": "cpp",
+        "__functional_base": "cpp",
+        "__locale": "cpp",
+        "__mutex_base": "cpp",
+        "__nullptr": "cpp",
+        "__string": "cpp",
+        "__threading_support": "cpp",
+        "__tuple": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "exception": "cpp",
+        "functional": "cpp",
+        "ios": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "locale": "cpp",
+        "memory": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "ratio": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "typeinfo": "cpp",
+        "utility": "cpp",
+        "deque": "cpp",
+        "fstream": "cpp",
+        "iomanip": "cpp",
+        "stack": "cpp"
     }
 }

CMakeLists.txt

@@ -0,0 +1,10 @@
+project(test_econ_model)
+# set(models "fixed-simple, lending, pop-simple")
+# foreach(model models)
+#     add_executable(bin/${model} ${model}.cpp)
+# endforeach()
+make_directory(bin)
+include_directories(include/)
+add_executable(./bin/fixed-simple fixed-simple.cpp)
+add_executable(./bin/wealth-flow wealth-flow.cpp)
+add_executable(./bin/pop-simple pop-simple.cpp)

fixed-simple.cpp

@@ -0,0 +1,17 @@
+#include<iostream>
+#include<vector>
+
+std::vector<int> balances;
+
+const int N = 10000;
+const int DURATION = 1000;
+
+void frame_year() {
+    for (int i = 0; i < balances.size(); i++) {
+        // actions
+    }
+}
+
+int main() {
+    return 0;
+}

include/econ.hpp

@@ -0,0 +1,12 @@
+#include<iostream>
+#include <vector>
+
+void economic_decision_simple(std::vector<int> &balances, int id, float spend_ratio) {
+    // assert(spend_ratio > 0 && spend_ratio <= 1);
+    std::cout << "test" << std::endl;
+    int total_bal = balances.at(id);
+    int spendable = (random() * spend_ratio) * total_bal; 
+    int recipient_id = random() * (balances.size());
+    balances.at(id) -= spendable;
+    balances.at(recipient_id) += spendable;
+}

include/io.hpp

@@ -0,0 +1,32 @@
+#include <vector>
+#include <string>
+#include <cstdio>
+#include <iostream>
+#include <fstream>
+
+void dump_balances_csv(std::vector<int> balances, std::string name) {
+    std::string csv_data = "Id,Balance\n";
+    for (int i = 0; i < balances.size(); i++) {
+        csv_data += std::to_string(i+1)+ "," + 
+            std::to_string(balances[i]) + "\n";
+    }
+    std::ofstream file;
+    file.open(name + ".csv");
+    file << csv_data;
+    file.close();
+}
+
+
+void dump_balances_and_ages_csv(std::vector<int> balances, std::vector<int> ages, std::string name) {
+    assert(balances.size() == ages.size());
+    std::string csv_data = "Id,Balance,Age\n";
+    for (int i = 0; i < balances.size(); i++) {
+        csv_data += std::to_string(i+1)+ "," +
+            std::to_string(ages[i]) + "," +
+            std::to_string(balances[i]) + "\n";
+    }
+    std::ofstream file;
+    file.open(name + ".csv");
+    file << csv_data;
+    file.close();
+}

pop-simple.cpp

@@ -0,0 +1,87 @@
+#include <iostream>
+#include <vector>
+#include <cmath>
+#include <cstdlib>
+#include <algorithm>
+#include "econ.hpp"
+#include "io.hpp"
+
+std::vector<int> ages;
+std::vector<int> balances;
+
+const int N_o = 10;
+const int N = 10000;
+const int DURATION = 1000;
+const int MAX_AGE = 100;
+
+const int STARTING_BALANCE=50000;
+
+const int LOGISTIC_CARRYING_CAPACITY = 100000;
+const float LOGISTIC_GROWTH_RATE = 0.04;
+const int LOGISTIC_MIDPOINT = DURATION / 2;
+
+// pop modeling functions
+
+void kill_even_redist(int id) {
+    int bal = balances.at(id);
+    ages.erase(ages.begin()+id);
+    balances.erase(balances.begin()+id);
+    int alloc_each = bal / balances.size();
+    for (int i = 0; i < balances.size(); i++) {
+        balances.at(i) += alloc_each;
+    }
+}
+
+void kill_inheritance(int id) {
+    int bal = balances.at(id);
+    ages.erase(ages.begin()+id);
+    balances.erase(balances.begin()+id);
+    int recipient_id = (balances.size() - 1) * random();
+    balances.at(recipient_id) += bal;
+}
+
+void age_all() {
+    for (int i = 0; i < ages.size(); i++) {
+        ages.at(i) += 1;
+        if (ages.at(i) > MAX_AGE) {
+            // kill_inheritance(i);
+            kill_even_redist(i);
+        }
+    }
+}
+
+int logistic_population_func(int year) {
+    // https://en.wikipedia.org//wiki/Logistic_function
+    return (LOGISTIC_CARRYING_CAPACITY / 
+        (1 + exp(-LOGISTIC_GROWTH_RATE * (year - LOGISTIC_MIDPOINT))));
+}
+
+void adjust_population(int year) {
+    int diff = logistic_population_func(year) - balances.size();
+    if (diff > 0) {
+        for (int i = 0; i < diff; i++) {
+            ages.push_back(1);
+            balances.push_back(0);
+        }
+    }
+}
+
+int main() {
+    // init state
+    ages.assign(N_o, 1);
+    balances.assign(N_o, STARTING_BALANCE);
+
+    for (int year = 0; year < DURATION; year++) {
+        age_all();
+        adjust_population(year);
+        // for (int j = 0; j < balances.size(); j++) {
+        //     economic_decision_simple(balances, j, 0.4);
+        // }
+    }
+
+    // std::sort(balances.begin(), balances.end(), std::greater<int>());
+    dump_balances_and_ages_csv(balances, ages, "pop-balances-out");
+    std::cout << "Finished with " << balances.size() << " balances\n";
+
+    return 0;
+}

v1/.gitignore

@@ -1,5 +0,0 @@
-*
-!CMakeLists.txt
-!*.cpp
-!*.hpp
-!.gitignore

v1/CMakeLists.txt

@@ -1,2 +0,0 @@
-project(test_econ_model)
-add_executable(main main.cpp)

v1/main.cpp

@@ -1,57 +0,0 @@
-#include <iostream>
-#include <vector>
-#include <cmath>
-#include <random>
-
-std::vector<float> ages;
-std::vector<int> balances;
-
-const int N = 10000;
-const int DURATION = 1000;
-const int MAX_AGE = 100;
-
-const int LOGISTIC_CARRYING_CAPACITY = 100000;
-const int LOGISTIC_GROWTH_RATE = 1;
-const int LOGISTIC_MIDPOINT = DURATION / 2;
-
-// state mutation funcs
-
-void transfer_balance(int from, int to, int balance) {
-    balances[from] -= balance;
-    balances[to] += balance;
-}
-
-void kill_even_redist(int id) {
-    ages.erase(ages.begin()+id);
-    balances.erase(balances.begin()+id);
-}
-
-void kill_inheritance(int id) {
-    ages.erase(ages.begin()+id);
-    balances.erase(balances.begin()+id);
-}
-
-void frame_quarter() {
-    for (int i = 0; i < ages.size(); i++) {
-        ages[i] += 1;
-        if (ages[i] > MAX_AGE) {
-            kill_inheritance(i);
-        }
-    }
-}
-
-// modeling functions
-
-float logistic_func(int year) {
-    // https://en.wikipedia.org//wiki/Logistic_function
-    return LOGISTIC_CARRYING_CAPACITY / (1 + (-LOGISTIC_GROWTH_RATE * exp(year - LOGISTIC_MIDPOINT)));
-}
-
-int main() {
-    // init state
-    for (int i = 0; i < 1000; i++) {
-        std::cout << logistic_func(i) << std::endl;
-    }
-
-    return 0;
-}

wealth-flow.cpp

@@ -0,0 +1,20 @@
+#include<iostream>
+#include<vector>
+#include<cmath>
+#include<cstdlib>
+#include<algorithm>
+
+std::vector<int> balances;
+
+const int N = 10000;
+const int DURATION = 1000;
+
+void frame_year() {
+    for (int i = 0; i < balances.size(); i++) {
+    }
+}
+
+int main() {
+
+    return 0;
+}