njlr

[cxx]
  gtest_dep = //googletest:gtest

njlr

cxx_binary(
  name = 'demo',
  header_namespace = 'demo',
  headers = subdir_glob([
    ('demo/include', '**/*.hpp'),
  ]),
  srcs = glob([
    'demo/src/**/*.cpp',
  ]),
)

njlr

#include <gtest/gtest.h>
#include <mathutils/add.hpp>

TEST(mathutils, add) {
  ASSERT_EQ(3, add(1, 2));
  ASSERT_EQ(7, add(4, 3));
}

njlr

cxx_test(
  name = 'add',
  srcs = [
    'add.cpp',
  ],
  deps = [
    '//mathutils:mathutils',
  ],
)

njlr

#include <iostream>
#include <string>

int divide(int x, int y) {
  if (y == 0) {
    throw std::string("Divide by zero");
  }
  return x / y;
}

njlr

int compute(int x) noexcept {
  return x;
}

int compute(int x) throw(std::exception) {
  return x;
}

njlr

int foo() throw(int) {
  throw "bar";
  return 1;
}

int bar() noexcept {
  throw 42;
  return 1;
}

njlr

const int ERROR = 1;
const int SUCCESS = 0;

int compute(int input, int* output) {
  if (cond(input)) {
    return ERROR;
  } else {
    *output = computeOutput(input);
    return SUCCESS;
  }

njlr

int result = compute1(input);
int result2 = compute2(result);

if (has_errors()) {
  std::cout << pop_error_message() << std::endl;
}

njlr

template<class Left, class Right>
struct Either {
  union {
    Left leftValue;
    Right rightValue;
  };
  bool isLeft;
};