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Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.

Yield

The yield keyword is used to alter a starting point of a function for future calls. At the moment of execution, yield acts as return and can even return a value. The difference is that during the next call, the function will start its execution from the instruction right after the yield operator.

Syntax

Source code (UnigineScript)
// some_code_before; 
yield value; 
// some_code_after;

Parts

  • value is a value to yield. It is optional (0 by default).

Example

Source code (UnigineScript)
int foo() {
	begin:
		
		// execution starts here during the first call
		log.message("one, ");
		
		// execution ends here during the first call
		yield;
		
		// execution starts here during the second call
		log.message("two, ");
		
		// execution ends here during the second call
		yield;
		
		// execution starts here during the third call
		log.message("three, ");
		
		// execution starts here during the third call
		yield;
		
		// execution starts here during the fourth call
		goto begin;
}
forloop(int i = 0; 10) foo();

// the result is: one, two, three, one, two, …
Last update: 2018-04-26
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