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Add how to fix the most vexing parse problem #541

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merged 3 commits into from Nov 11, 2021
Merged

Add how to fix the most vexing parse problem #541

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8e159f4
Add how to fix the most vexing parse problem
fujitatomoya Nov 9, 2021
cbb53b2
use uniform initialization instead of extra pair of parentheses
fujitatomoya Nov 9, 2021
8e36987
fix comment
fujitatomoya Nov 9, 2021
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4 changes: 3 additions & 1 deletion demo_nodes_cpp/src/topics/talker.cpp
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Expand Up @@ -50,7 +50,9 @@ class Talker : public rclcpp::Node
pub_->publish(std::move(msg_));
};
// Create a publisher with a custom Quality of Service profile.
rclcpp::QoS qos(rclcpp::KeepLast(7));
// Extra pair of parentheses to address vexing parse problem.
// Or use uniform initialization.
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rclcpp::QoS qos(rclcpp::KeepLast{7});
pub_ = this->create_publisher<std_msgs::msg::String>("chatter", qos);

// Use a timer to schedule periodic message publishing.
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