Cropsly IOS Developer Interview Questions and Answers

Q1. Basic interview swift questions (medium to hard)
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Q2. Coding to find correct or whats wrong
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Machine test with collection view and api using url session

Q1. Technical questions of different scenarios
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Q1. Basic iOS questions , Closures,Protocol,Optional,Auto layouts.
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Q1. 1. Lazy property, stored properties, closures, API calls,delegates, protocol
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Q1. Swift basic questions like quard if let optionals
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Q1. Asked about leadership quality
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Quite good bother some skills

Q1. Strong communication skills required
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Python programming language along with the c++

Q1. Difference between retain, copy and strong?
Ans. 
Retain, copy, and strong are all memory management keywords in Objective-C used to manage object ownership.
• Retain: Increases the retain count of an object, ensuring it is not deallocated as long as there are references to it.

• Copy: Creates a new copy of an object, ensuring that changes to the original object do not affect the copied object.

• Strong: Similar to retain, it increases the retain count of an object and ensures...read more
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Q2. Difference between class and struct?
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Classes are reference types, while structs are value types in Swift.
• Classes are reference types, meaning they point to the same memory location when assigned to a new variable.

• Structs are value types, meaning they create a new copy when assigned to a new variable.

• Classes support inheritance, while structs do not.

• Classes can have deinitializers, while structs cannot.

• Example: class Person {} vs struct Point {}
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Q3. Solid principles
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Q1. What is difference between class and struct?
Ans. 
Classes are reference types, while structs are value types in Swift.
• Classes are reference types, meaning they are passed by reference, while structs are value types, passed by value.

• Classes support inheritance, while structs do not.

• Classes have deinitializers, while structs do not.

• Classes can have reference counting for memory management, while structs do not.

• Example: class Person {} vs struct Point {}
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Q2. What are optional?
Ans. 
Optionals are a feature in Swift that allow variables to have a value or be nil.
• Optionals are used to handle situations where a value may be missing.

• They are denoted by adding a '?' after the type declaration.

• Optionals must be unwrapped before their value can be used.

• Example: var name: String? = "John"

• Example: var age: Int? = nil
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Q1. Basic questions of java.
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Q1. Intro and other hr related questions.
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