Documentation
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Overview ¶
Package pred provides predicates for basic logic operations.
Predicates with conditional jobs like run.If allows to make non-linear flow. In terms of floc predicate should return true or false depending on context.
const idReadyFlag = 100
testReady := func(ctx floc.Context) bool {
if flag := ctx.Value(idReadyFlag); flag != nil {
return flag.(bool)
}
return false
}
flow := run.Sequence(
..., // Some job done here
job.If(testReady, job.Background(writeToDisk)), // Write some data ready to disk in background
..., // Some job more
)
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func And ¶
func And(predicates ...floc.Predicate) floc.Predicate
And returns a predicate which chains multiple predicates into a condition with AND logic. The result predicate finishes calculation of the condition as fast as the result is known. The function panics if the number of predicates is less than 2.
The result predicate tests the condition as follows.
[PRED_1] AND ... AND [PRED_N]
func Not ¶
func Not(predicate floc.Predicate) floc.Predicate
Not returns the negated value of the predicate.
The result predicate tests the condition as follows.
NOT [PRED]
func Or ¶
func Or(predicates ...floc.Predicate) floc.Predicate
Or returns a predicate which chains multiple predicates into a condition with OR logic. The result predicate finishes calculation of the condition as fast as the result is known.
The result predicate tests the condition as follows.
[PRED_1] OR ... OR [PRED_N]
func Xor ¶
func Xor(predicates ...floc.Predicate) floc.Predicate
Xor returns a predicate which chains multiple predicates into a condition with XOR logic. The result predicate finishes calculation of the condition as fast as the result is known.
The result predicate tests the condition as follows.
(([PRED_1] XOR [PRED_2]) ... XOR [PRED_N])
Types ¶
This section is empty.
Source Files