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TS: Optional prop

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Node: Env variable

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React: Root render

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C++: auto

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Type check

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Arrow function

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TS: type alias

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Svelte: Svelte nature

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GraphQL: scalar types

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CSharp: property

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TS: readonly

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Go: Multiple returns

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Node: promises

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GraphQL: object type

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CSharp: auto property

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Kotlin: default args

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Continue

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Default params

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SysDesign: Replication

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Node: async await

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CSharp: inheritance

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Kotlin: named args

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Default arg

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Rest params

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TS: enum

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Go: nil error

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CSharp: interface

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Ruby: default arg

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args kwargs

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Spread

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React: conditional render

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GraphQL: enum

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Lambda

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React: fragment

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Kotlin: lambda

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Return none

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TS: function type

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Go: struct

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TS: optional param

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Rust: match

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CSharp: access default

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React: useEffect

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GraphQL: arguments

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Rust: enum

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CSharp: static class

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JSONYAML: yaml recursive

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List comprehension

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TS: void

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C++: constructor

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Rust: struct

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Ruby: map

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SysDesign: Index

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Node: fs module

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CSharp: Dictionary

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Kotlin: constructor

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Ruby: select

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Enumerate

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forEach return

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SysDesign: Message queue

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C++: access private

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