What is the significance of “?” In swift?

867

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What are the type of integers does swift have?

794

---

What is the difference between swift and ‘objective-c’ language?

847

---

What is swift programming language?

882

---

What are the features of swift programming?

873

---

What is the floating point numbers and what are the types of floating number in swift?

914

---

How you define variables in swift language?

900

---

What are the collection types available in swift?

755

---

What are the control transfer statements used in swift?

801

---

How to convert nsarray to nsmutablearray in swift?

974

---

What is new features in swift 4.0?

831

---

How to convert nsmutablearray to swift array in swift?

827

---

What is type aliasing in swift?

901

---

What are the advantages of swift?

813

---

Is swift object oriented programming?

853

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