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slow_random = (autocb) -> | |
await setTimeout defer(), 100 | |
Math.random() | |
slow_buggy_random = (bugginess=0.1, cb) -> | |
# cannot return multi values (e.g., err and value), thus no autocb | |
await setTimeout defer(), 100 | |
if Math.random() < bugginess | |
cb "boom" | |
else | |
cb false, Math.random() | |
# parallel | |
errors = {} | |
await | |
slow_random defer n | |
slow_random defer m | |
slow_buggy_random 0.1, defer errors.first, x | |
slow_buggy_random 0.1, defer errors.second, y | |
for i in [1..10] | |
slow_buggy_random 0.1, defer errors[i], ignored | |
for i, err of errors | |
if err | |
console.log "error: #{err} on #{i}" | |
# waterfall | |
await | |
# trivial: () ==> n | |
slow_random defer n | |
await | |
# wrong order: (cb, delay) ==> | |
setTimeout defer(), 100 | |
await | |
# in and out: (bugginess) ==> err, n | |
slow_buggy_random 0.2, defer err, n | |
return err if err | |
await | |
# inline waterfall | |
do (autocb=defer(err)) -> | |
await slow_random defer n | |
await slow_random defer m | |
return "error: shrinkage" if n > m | |
return err if err | |
# parallel each | |
await | |
for i in [1..10] | |
slow_random defer ignored | |
# serial each | |
for i in [1..10] | |
await slow_random defer ignored |
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