Difference between revisions of "Coroutine.yield"
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(Created page with "__NOTOC__ '''Available since:''' Gideros 2011.6<br/> === Description === In order for multiple coroutines to share execution they must stop executing (after performing a sensi...") |
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In order for multiple coroutines to share execution they must stop executing (after performing a sensible amount of processing) and pass control to another thread. This act of submission is called yielding. Coroutines explicitly call a Lua function coroutine.yield(), which is similar to using return in functions. What differentiates yielding from function returns is that at a later point we can reenter the thread and carry on where we left off. When you exit a function scope using return the scope is destroyed and we cannot reenter it, e.g., | In order for multiple coroutines to share execution they must stop executing (after performing a sensible amount of processing) and pass control to another thread. This act of submission is called yielding. Coroutines explicitly call a Lua function coroutine.yield(), which is similar to using return in functions. What differentiates yielding from function returns is that at a later point we can reenter the thread and carry on where we left off. When you exit a function scope using return the scope is destroyed and we cannot reenter it, e.g., | ||
<source lang="lua"> | <source lang="lua"> | ||
| − | + | coroutine.yield(val1,...) | |
</source> | </source> | ||
| − | '''val1 | + | '''val1''': (any) value to return from coroutine.resume call '''optional'''<br/> |
| − | '''... | + | '''...''': (multiple) other optional values that will be returned from coroutine.resume call '''optional'''<br/> |
Revision as of 10:20, 23 August 2018
Available since: Gideros 2011.6
Description
In order for multiple coroutines to share execution they must stop executing (after performing a sensible amount of processing) and pass control to another thread. This act of submission is called yielding. Coroutines explicitly call a Lua function coroutine.yield(), which is similar to using return in functions. What differentiates yielding from function returns is that at a later point we can reenter the thread and carry on where we left off. When you exit a function scope using return the scope is destroyed and we cannot reenter it, e.g.,
coroutine.yield(val1,...)
val1: (any) value to return from coroutine.resume call optional
...: (multiple) other optional values that will be returned from coroutine.resume call optional
