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< h1 > < a href = "../../../" > wren< / a > < / h1 >
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< h2 > a classy little scripting language< / h2 >
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< li > < a href = "../../" > Back to Wren CLI< / a > < / li >
< li > < a href = "../" > Back to CLI Modules< / a > < / li >
< li > < a href = "./" > scheduler module< / a > < / li >
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< h2 > scheduler classes< / h2 >
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< li > < a href = "scheduler.html" > Scheduler< / a > < / li >
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< td > < a href = "../" > Back to CLI Modules< / a > < / td >
< td > < a href = "./" > scheduler module< / a > < / td >
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< td colspan = "2" > < h2 > scheduler classes< / h2 > < / td >
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< li > < a href = "scheduler.html" > Scheduler< / a > < / li >
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< h1 > Scheduler Class< / h1 >
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< p > The Scheduler class maintains a list of fibers, to be started one after the other, when a signal to do so is received. The signal (a private method call) is typically transmitted by < em > long running< / em > methods in the File or Timer classes which suspend the current fiber so that Wren can carry out other tasks in the meantime.< / p >
< h2 > Static Method < a href = "#static-method" name = "static-method" class = "header-anchor" > #< / a > < / h2 >
< h3 > Scheduler.< strong > add< / strong > (callable) < a href = "#scheduler.add(callable)" name = "scheduler.add(callable)" class = "header-anchor" > #< / a > < / h3 >
< p > Adds a new fiber to the scheduler’ s fibers list. This fiber calls < code > callable< / code > and then transfers to the next fiber in the list, if there is one.< / p >
< p > < code > callable< / code > is a function or other object which has a call() method.< / p >
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var a = 3
Scheduler.add {
a = a * a
}
Scheduler.add {
a = a + 1
}
System.print(a) // still 3
Timer.sleep(3000) // wait 3 seconds
System.print(a) // now 3 * 3 + 1 = 10
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< p > Wren lives
2019-02-06 02:52:27 +00:00
< a href = "https://github.com/wren-lang/wren" > on GitHub< / a >
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— Made with ❤ by
< a href = "http://journal.stuffwithstuff.com/" > Bob Nystrom< / a > and
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< a href = "https://github.com/wren-lang/wren/blob/main/AUTHORS" > friends< / a > .
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