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//! Core traits for the library
/// # BuildParam
///
/// This trait is used to build the parameters for the NS3 program.
///
/// Implement this trait and also the `Default` trait on your own config struct.
///
/// ## Example
///
/// ```
/// use serde::{Deserialize, Serialize};
/// use ns3_parallel::{BuildParam, BuildCmd};
///
/// #[derive(Debug, Serialize, Deserialize)]
/// #[serde(default)]
/// pub struct Config {
/// pub sim_time: u32,
/// pub app_name: String,
/// pub policy: Vec<u32>,
/// }
///
/// #[derive(Debug, Clone, Serialize, Deserialize)]
/// pub struct Param {
/// pub sim_time: u32,
/// pub app_name: String,
/// pub policy: u32,
/// }
///
/// impl Default for Config {
/// fn default() -> Self {
/// Config {
/// sim_time: 100,
/// app_name: "ns3-tcp-bbr".to_string(),
/// policy: vec![1, 2, 3],
/// }
/// }
/// }
///
/// impl BuildParam<Param> for Config {
/// fn build_param(&self) -> Vec<Param> {
/// let mut params: Vec<Param> = Vec::new();
/// for policy in &self.policy {
/// let param = Param {
/// sim_time: self.sim_time,
/// app_name: self.app_name.clone(),
/// policy: *policy,
/// };
/// params.push(param);
/// }
/// params
/// }
/// }
/// impl BuildCmd for Param {
/// fn build_cmd(&self) -> String {
/// format!(
/// "xxx --app-name={} --sim-time={} --policy={}",
/// self.app_name, self.sim_time, self.policy
/// )
/// }
/// }
/// # BuildCmd
///
/// This trait is used to build the command line for the NS3 program.
///
/// Implement this trait on your own param struct.
///
/// ## Example
///
/// ```
/// use serde::{Deserialize, Serialize};
/// use ns3_parallel::{BuildParam, BuildCmd};
///
/// #[derive(Debug, Serialize, Deserialize)]
/// #[serde(default)]
/// pub struct Config {
/// pub sim_time: u32,
/// pub app_name: String,
/// pub policy: Vec<u32>,
/// }
///
/// #[derive(Debug, Clone, Serialize, Deserialize)]
/// pub struct Param {
/// pub sim_time: u32,
/// pub app_name: String,
/// pub policy: u32,
/// }
///
/// impl Default for Config {
/// fn default() -> Self {
/// Config {
/// sim_time: 100,
/// app_name: "ns3-tcp-bbr".to_string(),
/// policy: vec![1, 2, 3],
/// }
/// }
/// }
///
/// impl BuildParam<Param> for Config {
/// fn build_param(&self) -> Vec<Param> {
/// let mut params: Vec<Param> = Vec::new();
/// for policy in &self.policy {
/// let param = Param {
/// sim_time: self.sim_time,
/// app_name: self.app_name.clone(),
/// policy: *policy,
/// };
/// params.push(param);
/// }
/// params
/// }
/// }
/// impl BuildCmd for Param {
/// fn build_cmd(&self) -> String {
/// format!(
/// "xxx --app-name={} --sim-time={} --policy={}",
/// self.app_name, self.sim_time, self.policy
/// )
/// }
/// }