Spin.hold - Revision history

Ximan: /* See Also */

2011-01-09T00:24:31Z

‎See Also

Ximan: /* Upon Error */

2010-11-25T03:29:33Z

‎Upon Error

Ximan: Created page with "== Calling Pattern == Call local r = sl.spin(a[, b[, ...]]) later local v,t = r.hold([c[, ...]]) Args c0..cN are an indefinite number of variadic arguments of any type Results..."

2010-11-25T03:23:58Z

Created page with "== Calling Pattern == Call local r = sl.spin(a[, b[, ...]]) later local v,t = r.hold([c[, ...]]) Args c0..cN are an indefinite number of variadic arguments of any type Results..."

New page

== Calling Pattern ==
Call
local r = sl.spin(a[, b[, ...]])
later
local v,t = r.hold([c[, ...]])
Args
c0..cN are an indefinite number of variadic arguments of any type
Results
v is any type
t is a number

== Description ==

The spin hold method repeatedly calls (around 10 calls per second) the function a passed to the spin constructor until such time as it returns a non-nil value.

At each cycle of evaluation, hold supplies its variadic arguments to all of the functions b0...bM passed to the constructor and evaluates them. The first result of each is passed as an argument to a in the same order. Then c0...cN round out the remainder of arguments passed to function a. E.g.,

v = a([b0([c0,...cN]),...bM([c0,...cN])][, c0,...cN])

If a b is encountered which is not a function, it is simply passed as value, unless it is nil in which case it is converted to [[null]] first.

Hold evaluates at least one cycle, and terminates upon any non-nil result v. The time elapsed during the hold operation, t, is passed back as well.

== Upon Error ==

If one of the passed functions throws an error during evaluation, an unhandled exception will occur. In version 0.06, any errors thrown will be caught at the spin.hold level and handled according to the operation error redirection mode.

== See Also ==

* [http://www.easyuo.com/openeuo/wiki/index.php/Simplelib simplelib]

* [[case]]

* [[iterator]]

* [[spin]]

* [[spin.till]]

* [[chain]]

* [[statemachine]]

@@ Line 31: / Line 31: @@
 * [[case]]
 * [[iterator]]
-* [[spin]]
+* [[journal]]
-* [[spin.till]]
+* [[machine]]
-* [[chain]]
+* [[spin]]
-* [[statemachine]]
+* [[spin.till]]

@@ Line 24: / Line 24: @@
 == Upon Error ==
-If one of the passed functions throws an error during evaluation, an unhandled exception will occur.  In version 0.06, any errors thrown will be caught at the spin.hold level and handled according to the operation error redirection mode.
+If one of the passed functions throws an error during evaluation, an unhandled exception will occur.  In version 0.06, any errors thrown will be caught at the spin.hold level and handled according to the operant error redirection mode.
 == See Also ==