Return in foreach and break in for

difference

to want to End for loop , Use return

Only Zhao Liu hasn't been printed out , Subsequent array elements are still executed .

foreach  in  
 keyword "return", The effect of execution is equivalent to ordinary for Keywords in the loop continue
return It doesn't mean the original return The meaning of representation 
"break" or "continue" Is not allowed to use 

 Ordinary for In circulation 
 Want to end early ( End ) The circular body uses "break";
 End the cycle , For the next round of recycling "continue";
 Use "return", Not only force the end for The loop body , It also ends the entire method containing the loop body ahead of time 

principle

forEach(), In the final analysis, it is a method , and Not a loop , End the execution of a method yes return

Common operations

for  In circulation  break  Terminate the current loop , Continue with the next code 

for  In circulation  return  Terminate the current loop , The next code is not executed , Method returns 

 In operation , There are often many unexpected situations that cause code to terminate prematurely 
 such as ： Null pointer exception , So you can terminate by throwing a false exception forEach

This way is not friendly , You can pack it again