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Tutor profile: John R.

Inactive
John R.
Ex-Goldman Sachs Banker...Current Technology Consultant : Finance, Software Development, Excel, SQL, Spanish
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Questions

Subject: Spanish

TutorMe
Question:

Cual es la calidad mas importante du un tutor de Español?

Inactive
John R.
Answer:

Paciencia y la capacidad escuchar.

Subject: Microsoft Excel

TutorMe
Question:

What is the best way to use VLOOKUPS in an Excel model?

Inactive
John R.
Answer:

Don't! Use VBA or Index(Match())

Subject: iOS Programming

TutorMe
Question:

How is an optional variable denoted in Swift?

Inactive
John R.
Answer:

With a question mark after the variable name.

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