UEFA Conference League Qualification stats & predictions

Tactical Formations: Shaping Game Dynamics

Tactical formations are fundamental to how teams approach matches. They dictate player positioning, movement patterns, and overall strategy. Different formations offer various advantages depending on the opponent's strengths and weaknesses.

Critical Tactical Formations in Football

• Squad Formation (4-4-2):** A balanced formation offering both defensive solidity and attacking options through wingers and central strikers.
• Squad Formation (4-3-3):** Focused on attacking play with three forwards supported by midfielders who can contribute both defensively and offensively.yudongxu/rock<|file_sep|>/src/rock/distributed/distributed_lib.rs //! # Distributed computing library //! //! ## Example: //! //! rust //! # use std::thread; //! # use std::sync::Arc; //! # use rock::distributed::{JobHandle,Distributed}; //! # fn main() { //! let distributed = Distributed::new(); //! //! let job_handle = distributed.submit(move || { //! //do some work here //! thread::sleep(std::time::Duration::from_millis(100)); //! "result" //! }).unwrap(); //! //! let result = job_handle.wait().unwrap(); //! //! assert_eq!(result,"result"); //! # } //! use crate::distributed::Distributed as _Distributed; pub use crate::distributed::{Distributed,DistributedError,DistributedResult}; use std::sync::{Arc,Mutex}; use std::collections::{HashMap}; use std::sync::mpsc::{Sender,RcSender}; use std::thread; use crate::{JobHandle}; struct DistributedImpl { //worker threads worker_count:usize, workers:Vec, //job handles jobs:Mutex>>>, job_counter:Mutex, } impl DistributedImpl { fn new(worker_count:usize) -> DistributedImpl { DistributedImpl{ worker_count, workers:Vec::with_capacity(worker_count), jobs:Mutex::new(HashMap::new()), job_counter:Mutex::new(0), } } fn submit(&mut self,f:Box String + Send + 'static>) -> Result{ let job_id = { let mut counter = self.job_counter.lock().unwrap(); *counter +=1; *counter }; let (tx,sender) = channel(); let sender = RcSender{rc_sender:sender}; { let mut jobs = self.jobs.lock().unwrap(); jobs.insert(job_id,RcSender{rc_sender:tx.clone()}); } let worker_index = job_id % self.worker_count; self.workers[worker_index].submit(job_id,f,sender); Ok(JobHandle{job_id}) } fn wait(&self,jid:&usize) -> Result{ let mut jobs = self.jobs.lock().unwrap(); if !jobs.contains_key(jid) { return Err("invalid job handle".to_string()); } drop(jobs); let receiver = jobs.get(jid).unwrap().rc_receiver.clone(); receiver.recv().map_err(|_|"failed to receive".to_string()).and_then(|result|result) } fn run(&mut self){ self.workers.clear(); for _ in 0..self.worker_count{ self.workers.push(Worker{ sender:None, receiver:channel(), join_handle:None, }); } //spawn workers for i in &mut self.workers{ i.join_handle = Some(thread::spawn(move ||{ WorkerImpl(i.sender.take().unwrap(),i.receiver).run() })); } } } struct Worker{ sender:Option>, receiver:Receiver<(usize,dynamic_fn) >, join_handle:Option>, } struct WorkerImpl{ sender:Sender<(usize,dynamic_fn) >, receiver:Receiver<(usize,dynamic_fn) >, } impl WorkerImpl{ fn run(self){ loop { let (jid,f)=self.receiver.recv().unwrap(); match f.call() { Ok(result)=>{self.sender.send((jid,result)).unwrap();} Err(error)=>{self.sender.send((jid,error.to_string())).unwrap();} } } } } fn channel() -> (Sender<(usize,dynamic_fn)>,RcSender>){ let (tx1,s1) = mpsc::channel(); let (tx2,s2) = mpsc::channel(); ( tx1, RcSender{rc_sender:s2}, ) } #[derive(Clone)] struct RcSender{ rc_sender:Rc>>, } impl RcSender{ pub fn send(&self,msg:T)->Result<(),String>{ self.rc_sender.borrow_mut().send(msg).map_err(|e|e.to_string()) } pub fn rc_receiver(&self)->RcReceiver{ RcReceiver{rc_receiver:self.rc_sender.borrow().clone()} } } #[derive(Clone)] struct RcReceiver{ rc_receiver:Rc>>, } implRcReceiver{ pub fn recv(&self)->Result{ self.rc_receiver.borrow_mut().recv().map_err(|e|e.to_string()) } } //this trait is required by send_to_thread function trait DynamicFn{ fn call(self)->Result; } //this trait is required by send_to_thread function impl String + Send + 'static > DynamicFn for F{ fn call(self)->Result{ self().map_err(|e|e.to_string()) } } type dynamic_fn=Box; pub struct JobHandle{ pub job_id:usize, } #[cfg(test)] mod test { use super::*; #[test] fn test_distributed(){ //setup distributed framework let mut distributed = DistributedImpl {worker_count:10,jobs:Mutex::new(HashMap::new()),job_counter:Mutex::new(0),workers:Vec::::with_capacity(10)}; distributed.run(); //submit job let handle = distributed.submit(Box:: String + Send + 'static>::from(||"result".to_string())).unwrap(); //wait for result assert_eq!(distributed.wait(&handle.job_id).unwrap(),"result"); //submit another job which will fail let handle2 = distributed.submit(Box:: String + Send + 'static>::from(||{panic!("should fail");})).unwrap(); //wait for error message assert!(distributed.wait(&handle2.job_id).is_err()); } } <|repo_name|>yudongxu/rock<|file_sep|>/src/rock/parallel/parallel_lib.rs use super::*; /// Parallel computation library. /// /// ## Example: /// /// rust,no_run,norun /// # use rock::*; /// # use std::{thread}; /// # /// # #[derive(Debug,Copy,Clone)] /// # struct Point {x:i32,y:i32} /// # /// # impl Point { /// # pub fn new(x:i32,y:i32)->Point{ /// # Point{x:x,y:y} /// # } /// # /// # pub fn add(self,p:&Point)->Point{ /// # Point{x:self.x+p.x,y:self.y+p.y} /// # } /// # /// # pub fn mul(self,v:i32)->Point{ /// # Point{x:self.x*v,y:self.y*v} /// # /// # } /// # /// # pub fn div(self,v:i32)->Point{ /// # if v==0 {return Point{x:self.x,y:self.y};} /// /// Point{x:self.x/v,y:self.y/v} /// # /// # } /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// # } #[derive(Debug,Copy)] pub struct Parallel(pub R,F,P,S); impl(Parallel){ /// Execute parallel computation. /// /// ## Example: /// /// rust,no_run,norun /// # use rock::*; /// # /// #[derive(Debug,Copy)] /// struct Point {x:i32,y:i32} /// /// impl Point { /// pub fn new(x:i32,y:i32)->Point{ /// Point{x:x,y:y} /// } /// /// pub fn add(self,p:&Point)->Point{ /// Point{x:self.x+p.x,y:self.y+p.y} /// } /// /// pub fn mul(self,v:i32)->Point{ /// Point{x:self.x*v,y:self.y*v} /// /// } /// /// pub fn div(self,v:i32)->Point{ /// if v==0 {return Point{x:self.x,y:self.y};} /// /// Point{x:self.x/v,y:self.y/v} /// /// } /// #} # type ParallelIterator=Parallel<(),(),(),()>; impl(ParallelIterator) where R:ForeachRng,F:ForeachFunctor

  ,P:'static+S:'static{ pub fn execute(mut self){ thread_local! { static WORKER_THREADS:[thread_local!(std::cell::RefCell>>>);std::num_cpus::get()]; static WORKER_MUTEXES:[std::sync::{Mutex;HashMap;VecDeque<(P,std::{option;Option)>>,hash_map>>>>}>;HashMap>>>>}>;HashMap>>>>};}}};std:num_cpus:get();]; static WORKER_THREAD_IDS:[i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;i64;]; static WORKER_THREAD