What is the use of double question mark “??” In swift?

884

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what are the benefits of working as an actuary?

1272

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How to connect to the database?

3

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Why do we use inheritance?

1136

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lookup transformation with screenshots

4006

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What does shebang mean in unix?

911

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Explain how can you estimate a gas flow based on two pressure measurements?

1061

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What is property and its types?

1

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Can the user toggle between using Local OR and shared OR for the same action?

974

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Tell me about a major problem you recently handled. Were you successful in resolving it? in petroleum side ?

4521

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what are aggregate and scalar functions? : Sql dba

1057

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What advantages does Spark offer over Hadoop MapReduce?

297

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Difference between standard cost and variable cost.

2482

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What is the difference between tags and categories?

158

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How does apache make money?

902

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