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Add support for dereferencing optional references #3008

Merged
merged 4 commits into from
Jan 11, 2024
Merged

Add support for dereferencing optional references #3008

merged 4 commits into from
Jan 11, 2024

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@turbolent turbolent commented Jan 10, 2024 •
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Closes #3005

  • Targeted PR against master branch
  • Linked to Github issue with discussion and accepted design OR link to spec that describes this work
  • Code follows the standards mentioned here
  • Updated relevant documentation
  • Re-reviewed Files changed in the Github PR explorer
  • Added appropriate labels

@turbolent turbolent self-assigned this Jan 10, 2024
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github-actions bot commented Jan 10, 2024 •
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Cadence Benchstat comparison

This branch with compared with the base branch onflow:master commit 24f277e
The command for i in {1..N}; do go test ./... -run=XXX -bench=. -benchmem -shuffle=on; done was used.
Bench tests were run a total of 7 times on each branch.

Collapsed results for better readability

old.txtnew.txt
time/opdelta
DecodeBatchEventsCCF-4127ms ± 0%129ms ± 0%~(p=1.000 n=1+1)
DecodeBatchEventsJSON-4386ms ± 0%383ms ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowFees.FeesDeducted-42.81µs ± 0%2.83µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowFees.TokensWithdrawn-42.10µs ± 0%2.12µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-42.80µs ± 0%2.77µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-43.09µs ± 0%3.15µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowIDTableStaking.NewWeeklyPayout-42.13µs ± 0%2.15µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowIDTableStaking.RewardsPaid-42.48µs ± 0%2.48µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowToken.TokensDeposited-42.54µs ± 0%2.59µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowToken.TokensDeposited_with_nil_receiver-42.48µs ± 0%2.49µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowToken.TokensMinted-42.10µs ± 0%2.13µs ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowToken.TokensWithdrawn-42.56µs ± 0%2.61µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowFees.FeesDeducted-49.54µs ± 0%9.48µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowFees.TokensWithdrawn-45.54µs ± 0%5.52µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-48.62µs ± 0%8.56µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-411.7µs ± 0%11.7µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowIDTableStaking.NewWeeklyPayout-45.66µs ± 0%5.63µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowIDTableStaking.RewardsPaid-47.33µs ± 0%7.26µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowToken.TokensDeposited-47.64µs ± 0%7.60µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowToken.TokensDeposited_with_nil_receiver-46.91µs ± 0%6.88µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowToken.TokensMinted-45.59µs ± 0%5.57µs ± 0%~(p=1.000 n=1+1)
DecodeJSON/FlowToken.TokensWithdrawn-47.70µs ± 0%7.59µs ± 0%~(p=1.000 n=1+1)
EncodeBatchEventsCCF-488.4ms ± 0%87.5ms ± 0%~(p=1.000 n=1+1)
EncodeBatchEventsJSON-4102ms ± 0%102ms ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowFees.FeesDeducted-42.12µs ± 0%2.09µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowFees.TokensWithdrawn-41.55µs ± 0%1.55µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-41.92µs ± 0%1.89µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-42.24µs ± 0%2.22µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowIDTableStaking.NewWeeklyPayout-41.58µs ± 0%1.57µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowIDTableStaking.RewardsPaid-41.71µs ± 0%1.74µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowToken.TokensDeposited-41.81µs ± 0%1.77µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowToken.TokensDeposited_with_nil_receiver-41.77µs ± 0%1.75µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowToken.TokensMinted-41.55µs ± 0%1.53µs ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowToken.TokensWithdrawn-41.81µs ± 0%1.78µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowFees.FeesDeducted-42.41µs ± 0%2.43µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowFees.TokensWithdrawn-41.39µs ± 0%1.40µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-42.16µs ± 0%2.20µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-43.07µs ± 0%3.08µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowIDTableStaking.NewWeeklyPayout-41.41µs ± 0%1.43µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowIDTableStaking.RewardsPaid-41.80µs ± 0%1.83µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowToken.TokensDeposited-42.08µs ± 0%2.13µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowToken.TokensDeposited_with_nil_receiver-41.65µs ± 0%1.66µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowToken.TokensMinted-41.39µs ± 0%1.41µs ± 0%~(p=1.000 n=1+1)
EncodeJSON/FlowToken.TokensWithdrawn-42.06µs ± 0%2.08µs ± 0%~(p=1.000 n=1+1)
ExportType/composite_type-4282ns ± 0%278ns ± 0%~(p=1.000 n=1+1)
ExportType/simple_type-473.7ns ± 0%93.1ns ± 0%~(p=1.000 n=1+1)
InterpretRecursionFib-42.17ms ± 0%2.24ms ± 0%~(p=1.000 n=1+1)
NewInterpreter/new_interpreter-4904ns ± 0%904ns ± 0%~(p=1.000 n=1+1)
NewInterpreter/new_sub-interpreter-4462ns ± 0%461ns ± 0%~(p=1.000 n=1+1)
ParseArray-45.95ms ± 0%5.84ms ± 0%~(p=1.000 n=1+1)
ParseDeploy/byte_array-49.48ms ± 0%8.77ms ± 0%~(p=1.000 n=1+1)
ParseDeploy/decode_hex-41.00ms ± 0%0.98ms ± 0%~(p=1.000 n=1+1)
ParseFungibleToken/With_memory_metering-4151µs ± 0%151µs ± 0%~(p=1.000 n=1+1)
ParseFungibleToken/Without_memory_metering-4119µs ± 0%119µs ± 0%~(p=1.000 n=1+1)
ParseInfix-45.19µs ± 0%5.38µs ± 0%~(p=1.000 n=1+1)
QualifiedIdentifierCreation/One_level-42.48ns ± 0%2.17ns ± 0%~(p=1.000 n=1+1)
QualifiedIdentifierCreation/Three_levels-483.3ns ± 0%83.8ns ± 0%~(p=1.000 n=1+1)
RuntimeScriptNoop-43.62µs ± 0%3.66µs ± 0%~(p=1.000 n=1+1)
SuperTypeInference/arrays-4247ns ± 0%246ns ± 0%~(p=1.000 n=1+1)
SuperTypeInference/composites-493.6ns ± 0%100.2ns ± 0%~(p=1.000 n=1+1)
SuperTypeInference/integers-4317ns ± 0%309ns ± 0%~(p=1.000 n=1+1)
ValueIsSubtypeOfSemaType-472.7ns ± 0%71.4ns ± 0%~(p=1.000 n=1+1)
 
alloc/opdelta
DecodeBatchEventsCCF-466.1MB ± 0%66.1MB ± 0%~(p=1.000 n=1+1)
DecodeBatchEventsJSON-4244MB ± 0%244MB ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowFees.FeesDeducted-41.39kB ± 0%1.39kB ± 0%~(all equal)
DecodeCCF/FlowFees.TokensWithdrawn-41.20kB ± 0%1.20kB ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-41.47kB ± 0%1.47kB ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-41.48kB ± 0%1.48kB ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.NewWeeklyPayout-41.25kB ± 0%1.25kB ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.RewardsPaid-41.37kB ± 0%1.37kB ± 0%~(all equal)
DecodeCCF/FlowToken.TokensDeposited-41.31kB ± 0%1.31kB ± 0%~(all equal)
DecodeCCF/FlowToken.TokensDeposited_with_nil_receiver-41.30kB ± 0%1.30kB ± 0%~(all equal)
DecodeCCF/FlowToken.TokensMinted-41.20kB ± 0%1.20kB ± 0%~(all equal)
DecodeCCF/FlowToken.TokensWithdrawn-41.32kB ± 0%1.32kB ± 0%~(all equal)
DecodeJSON/FlowFees.FeesDeducted-46.00kB ± 0%6.00kB ± 0%~(all equal)
DecodeJSON/FlowFees.TokensWithdrawn-43.60kB ± 0%3.60kB ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-45.43kB ± 0%5.43kB ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-47.35kB ± 0%7.35kB ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.NewWeeklyPayout-43.64kB ± 0%3.64kB ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.RewardsPaid-44.54kB ± 0%4.54kB ± 0%~(all equal)
DecodeJSON/FlowToken.TokensDeposited-44.88kB ± 0%4.88kB ± 0%~(all equal)
DecodeJSON/FlowToken.TokensDeposited_with_nil_receiver-44.46kB ± 0%4.46kB ± 0%~(all equal)
DecodeJSON/FlowToken.TokensMinted-43.60kB ± 0%3.60kB ± 0%~(all equal)
DecodeJSON/FlowToken.TokensWithdrawn-44.88kB ± 0%4.88kB ± 0%~(all equal)
EncodeBatchEventsCCF-462.4MB ± 0%62.4MB ± 0%~(all equal)
EncodeBatchEventsJSON-439.1MB ± 0%39.1MB ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowFees.FeesDeducted-41.22kB ± 0%1.22kB ± 0%~(all equal)
EncodeCCF/FlowFees.TokensWithdrawn-41.17kB ± 0%1.17kB ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-41.44kB ± 0%1.44kB ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-41.41kB ± 0%1.41kB ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.NewWeeklyPayout-41.34kB ± 0%1.34kB ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.RewardsPaid-41.42kB ± 0%1.42kB ± 0%~(all equal)
EncodeCCF/FlowToken.TokensDeposited-41.22kB ± 0%1.22kB ± 0%~(all equal)
EncodeCCF/FlowToken.TokensDeposited_with_nil_receiver-41.20kB ± 0%1.20kB ± 0%~(all equal)
EncodeCCF/FlowToken.TokensMinted-41.17kB ± 0%1.17kB ± 0%~(all equal)
EncodeCCF/FlowToken.TokensWithdrawn-41.22kB ± 0%1.22kB ± 0%~(all equal)
EncodeJSON/FlowFees.FeesDeducted-4864B ± 0%864B ± 0%~(all equal)
EncodeJSON/FlowFees.TokensWithdrawn-4504B ± 0%504B ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-4888B ± 0%888B ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-41.08kB ± 0%1.08kB ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.NewWeeklyPayout-4552B ± 0%552B ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.RewardsPaid-4752B ± 0%752B ± 0%~(all equal)
EncodeJSON/FlowToken.TokensDeposited-4776B ± 0%776B ± 0%~(all equal)
EncodeJSON/FlowToken.TokensDeposited_with_nil_receiver-4640B ± 0%640B ± 0%~(all equal)
EncodeJSON/FlowToken.TokensMinted-4512B ± 0%512B ± 0%~(all equal)
EncodeJSON/FlowToken.TokensWithdrawn-4768B ± 0%768B ± 0%~(all equal)
ExportType/composite_type-4120B ± 0%120B ± 0%~(all equal)
ExportType/simple_type-40.00B 0.00B ~(all equal)
InterpretRecursionFib-41.00MB ± 0%1.00MB ± 0%~(p=1.000 n=1+1)
NewInterpreter/new_interpreter-4928B ± 0%928B ± 0%~(all equal)
NewInterpreter/new_sub-interpreter-4200B ± 0%200B ± 0%~(all equal)
ParseArray-42.71MB ± 0%2.65MB ± 0%~(p=1.000 n=1+1)
ParseDeploy/byte_array-44.22MB ± 0%4.23MB ± 0%~(p=1.000 n=1+1)
ParseDeploy/decode_hex-4214kB ± 0%214kB ± 0%~(p=1.000 n=1+1)
ParseFungibleToken/With_memory_metering-429.7kB ± 0%29.8kB ± 0%~(p=1.000 n=1+1)
ParseFungibleToken/Without_memory_metering-429.7kB ± 0%29.7kB ± 0%~(all equal)
ParseInfix-41.92kB ± 0%1.92kB ± 0%~(all equal)
QualifiedIdentifierCreation/One_level-40.00B 0.00B ~(all equal)
QualifiedIdentifierCreation/Three_levels-464.0B ± 0%64.0B ± 0%~(all equal)
RuntimeScriptNoop-43.21kB ± 0%3.21kB ± 0%~(all equal)
SuperTypeInference/arrays-496.0B ± 0%96.0B ± 0%~(all equal)
SuperTypeInference/composites-40.00B 0.00B ~(all equal)
SuperTypeInference/integers-40.00B 0.00B ~(all equal)
ValueIsSubtypeOfSemaType-448.0B ± 0%48.0B ± 0%~(all equal)
 
allocs/opdelta
DecodeBatchEventsCCF-41.48M ± 0%1.48M ± 0%~(p=1.000 n=1+1)
DecodeBatchEventsJSON-44.70M ± 0%4.70M ± 0%~(p=1.000 n=1+1)
DecodeCCF/FlowFees.FeesDeducted-430.0 ± 0%30.0 ± 0%~(all equal)
DecodeCCF/FlowFees.TokensWithdrawn-426.0 ± 0%26.0 ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-430.0 ± 0%30.0 ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-432.0 ± 0%32.0 ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.NewWeeklyPayout-426.0 ± 0%26.0 ± 0%~(all equal)
DecodeCCF/FlowIDTableStaking.RewardsPaid-429.0 ± 0%29.0 ± 0%~(all equal)
DecodeCCF/FlowToken.TokensDeposited-431.0 ± 0%31.0 ± 0%~(all equal)
DecodeCCF/FlowToken.TokensDeposited_with_nil_receiver-429.0 ± 0%29.0 ± 0%~(all equal)
DecodeCCF/FlowToken.TokensMinted-426.0 ± 0%26.0 ± 0%~(all equal)
DecodeCCF/FlowToken.TokensWithdrawn-431.0 ± 0%31.0 ± 0%~(all equal)
DecodeJSON/FlowFees.FeesDeducted-4126 ± 0%126 ± 0%~(all equal)
DecodeJSON/FlowFees.TokensWithdrawn-471.0 ± 0%71.0 ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-4102 ± 0%102 ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-4159 ± 0%159 ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.NewWeeklyPayout-470.0 ± 0%70.0 ± 0%~(all equal)
DecodeJSON/FlowIDTableStaking.RewardsPaid-487.0 ± 0%87.0 ± 0%~(all equal)
DecodeJSON/FlowToken.TokensDeposited-495.0 ± 0%95.0 ± 0%~(all equal)
DecodeJSON/FlowToken.TokensDeposited_with_nil_receiver-486.0 ± 0%86.0 ± 0%~(all equal)
DecodeJSON/FlowToken.TokensMinted-471.0 ± 0%71.0 ± 0%~(all equal)
DecodeJSON/FlowToken.TokensWithdrawn-495.0 ± 0%95.0 ± 0%~(all equal)
EncodeBatchEventsCCF-4950k ± 0%950k ± 0%~(all equal)
EncodeBatchEventsJSON-4853k ± 0%853k ± 0%~(p=1.000 n=1+1)
EncodeCCF/FlowFees.FeesDeducted-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowFees.TokensWithdrawn-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.DelegatorRewardsPaid-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.EpochTotalRewardsPaid-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.NewWeeklyPayout-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowIDTableStaking.RewardsPaid-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowToken.TokensDeposited-420.0 ± 0%20.0 ± 0%~(all equal)
EncodeCCF/FlowToken.TokensDeposited_with_nil_receiver-420.0 ± 0%20.0 ± 0%~(all equal)
EncodeCCF/FlowToken.TokensMinted-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeCCF/FlowToken.TokensWithdrawn-420.0 ± 0%20.0 ± 0%~(all equal)
EncodeJSON/FlowFees.FeesDeducted-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeJSON/FlowFees.TokensWithdrawn-412.0 ± 0%12.0 ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.DelegatorRewardsPaid-416.0 ± 0%16.0 ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.EpochTotalRewardsPaid-425.0 ± 0%25.0 ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.NewWeeklyPayout-412.0 ± 0%12.0 ± 0%~(all equal)
EncodeJSON/FlowIDTableStaking.RewardsPaid-415.0 ± 0%15.0 ± 0%~(all equal)
EncodeJSON/FlowToken.TokensDeposited-419.0 ± 0%19.0 ± 0%~(all equal)
EncodeJSON/FlowToken.TokensDeposited_with_nil_receiver-414.0 ± 0%14.0 ± 0%~(all equal)
EncodeJSON/FlowToken.TokensMinted-413.0 ± 0%13.0 ± 0%~(all equal)
EncodeJSON/FlowToken.TokensWithdrawn-418.0 ± 0%18.0 ± 0%~(all equal)
ExportType/composite_type-43.00 ± 0%3.00 ± 0%~(all equal)
ExportType/simple_type-40.00 0.00 ~(all equal)
InterpretRecursionFib-418.9k ± 0%18.9k ± 0%~(all equal)
NewInterpreter/new_interpreter-415.0 ± 0%15.0 ± 0%~(all equal)
NewInterpreter/new_sub-interpreter-44.00 ± 0%4.00 ± 0%~(all equal)
ParseArray-459.6k ± 0%59.6k ± 0%~(p=1.000 n=1+1)
ParseDeploy/byte_array-489.4k ± 0%89.4k ± 0%~(p=1.000 n=1+1)
ParseDeploy/decode_hex-463.0 ± 0%63.0 ± 0%~(all equal)
ParseFungibleToken/With_memory_metering-4778 ± 0%778 ± 0%~(all equal)
ParseFungibleToken/Without_memory_metering-4778 ± 0%778 ± 0%~(all equal)
ParseInfix-448.0 ± 0%48.0 ± 0%~(all equal)
QualifiedIdentifierCreation/One_level-40.00 0.00 ~(all equal)
QualifiedIdentifierCreation/Three_levels-42.00 ± 0%2.00 ± 0%~(all equal)
RuntimeScriptNoop-451.0 ± 0%51.0 ± 0%~(all equal)
SuperTypeInference/arrays-43.00 ± 0%3.00 ± 0%~(all equal)
SuperTypeInference/composites-40.00 0.00 ~(all equal)
SuperTypeInference/integers-40.00 0.00 ~(all equal)
ValueIsSubtypeOfSemaType-41.00 ± 0%1.00 ± 0%~(all equal)
 

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codecov bot commented Jan 10, 2024 •
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Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (24f277e) 80.00% compared to head (8d41006) 80.00%.

Files Patch % Lines
runtime/interpreter/interpreter_expression.go 88.88% 1 Missing and 1 partial ⚠️
Additional details and impacted files 
@@           Coverage Diff           @@
##           master    #3008   +/-   ##
=======================================
  Coverage   80.00%   80.00%           
=======================================
  Files         356      356           
  Lines       83043    83069   +26     
=======================================
+ Hits        66437    66463   +26     
  Misses      14247    14247           
  Partials     2359     2359
Flag Coverage Δ
unittests 80.00% <93.93%> (+<0.01%) ⬆️

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@dsainati1
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Does this only unwrap optionals one layer? I.e. will * fail on a &Int??

@turbolent
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turbolent commented Jan 10, 2024 •
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@dsainati1

Does this only unwrap optionals one layer? I.e. will * fail on a &Int??

Yes, only one layer of optionality is unwrapped, just like the optional chaining version did. This is also similar to how e.g. ! behaves.

To be honest, this is already quite some syntactic sugar, maybe we shouldn't even have this?

For example, the current behaviour is just ref == nil ? nil : *(ref!). Why would we have * unwrap multiple layers of optionality (or even consider optionality in the first place), while even ! isn't?

@dsainati1
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Yeah, that makes sense.

To be honest, this is already quite some syntactic sugar, maybe we shouldn't even have this?

IMO this is useful for the same reason that optional chaining is; it makes a common case more convenient to use. You're right that this is doable another way, but it would probably be more frustrating to do that way. The same is true for optional chaining!

I'm happy with this only unwrapping one layer of the optional.

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IMO this is useful for the same reason that optional chaining is; it makes a common case more convenient to use.

Good point, agreed!

@turbolent turbolent merged commit 581d56f into master Jan 11, 2024
12 of 14 checks passed
@turbolent turbolent deleted the bastian/3005-derference-optional-reference branch January 11, 2024 17:50
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@dsainati1 dsainati1 dsainati1 approved these changes

@SupunS SupunS SupunS approved these changes

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Lift * to optional references
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@turbolent @dsainati1 @SupunS