Kotlin Error Solutions & Debugging Guide

Kotlin Error Solutions

A statically typed, cross-platform language that targets the JVM (Java Virtual Machine) and can also compile to JavaScript and native.

60 Solutions

9,433 Total Views

12 Featured

About Kotlin Errors

Kotlin is a modern, statically typed programming language that runs on the JVM. Officially supported for Android development, Kotlin offers concise syntax and powerful features while maintaining full Java interoperability.

Learning Path

Kotlin basics and syntax • Null safety and smart casts • Object-oriented and functional programming • Coroutines • Android development • Kotlin Multiplatform

Kotlin Solutions

Problem	Difficulty	Views	Action
Featured Kotlin: How can I create a singleton using the `object` keyword? Creating singletons with object keyword...	Intermediate	192 views	View
Featured Why am I seeing 'No value passed for parameter X' in Kotlin? Handling missing required parameters...	Beginner	205 views	View
Featured Why do I see 'Type inference failed in Kotlin'? Helping the compiler determine types...	Beginner	189 views	View
Featured Why can't I modify my Kotlin List after initialization? Understanding collection mutability...	Beginner	211 views	View
Featured Kotlin: Using Lambdas Functional programming with lambda expressions...	Intermediate	214 views	View
Featured Kotlin: Infix Notation Creating DSL-like syntax with infix functions...	Beginner	211 views	View
Featured How can I resolve 'Function invocation is expected' in Kotlin? Missing function invocation parentheses...	Beginner	208 views	View
Featured How to resolve 'Type mismatch in Kotlin'? Resolving type compatibility errors...	Beginner	219 views	View
Featured Kotlin: Using Lambdas and Higher-Order Functions Functional programming with lambdas and HOFs...	Intermediate	130 views	View
Featured Kotlin: Smart Casts Automatic type casting after checks...	Beginner	194 views	View
Featured Kotlin: How do I handle null safety properly? Proper null safety practices...	Beginner	203 views	View
Featured How to fix 'IllegalStateException: X must not be null' in Kotlin? Handling lateinit property access...	Beginner	223 views	View
Why is my Kotlin extension function not being recognized? Troubleshooting extension function issues...	Beginner	141 views	View
How do I use lambda functions in Kotlin? Using lambda expressions effectively...	Intermediate	118 views	View
Kotlin: Working with Collections Functional operations on collections...	Beginner	177 views	View
Using Kotlin's `map` function on collections? Transforming collections with map...	Beginner	167 views	View
Understanding Kotlin's `apply` and `with` functions? Scope functions for concise object initialization...	Intermediate	115 views	View
What causes 'This declaration is experimental and its usage should be marked with '@Experimental' or '@UseExperimental' in Kotlin'? Using experimental Kotlin features...	Beginner	138 views	View
Kotlin: Understanding Null Safety Handling null references safely...	Beginner	155 views	View
Why do I get 'Modifier 'open' is not applicable to 'local variable' in Kotlin'? Understanding open modifier restrictions...	Beginner	149 views	View

Problem

Difficulty

Views

Action

Featured Kotlin: How can I create a singleton using the `object` keyword?

Creating singletons with object keyword...

Intermediate

192 views

Kotlin Error Solutions

About Kotlin Errors

Learning Path

Kotlin Solutions

Category Statistics

60

9,433

12

157

Difficulty Distribution

Common Errors

Best Practices

Featured Solutions

How to fix 'IllegalStateException: X must not be n...

How to resolve 'Type mismatch in Kotlin'?...

Kotlin: Using Lambdas...

Kotlin: Infix Notation...

Why can't I modify my Kotlin List after initializa...

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