System.Generics.Collections.TDictionary.ContainsKey

• Up to Parent: TDictionary

Delphi

function ContainsKey(const Key: K): Boolean;

C++

bool __fastcall ContainsKey(const K Key);

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.Generics.Collections.pas System.Generics.Collections.hpp	System.Generics.Collections	TDictionary

Description

Test if key in dictionary.

ContainsKey returns true if the given key is in the dictionary and false otherwise. This is an O(1) operation.

See Also

• AddOrSetValue

• ContainsValue

• TryGetValue

Code Examples

• Generics_Collections_TDictionary (Delphi)