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how many null aware operator types are in flutter

YOU.com answered on November 17, 2020 Popularity 5/10 Helpfulness 1/10

answer how many null aware operator types are in flutter

related dart null aware operator ??

how many null aware operator types are in flutter

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void main() {
  String name; // a nullable string variable

  // Using ?? operator to assign a default value if the variable is null
  String displayName = name ?? 'Guest';
  print(displayName); // Output: Guest

  // Using ?. operator to safely access properties or methods of a nullable object
  int length = name?.length;
  print(length); // Output: null

  // Using ??= operator to assign a value only if the variable is null
  String tempName;
  tempName ??= 'John Doe';
  print(tempName); // Output: John Doe
}

Popularity 5/10 Helpfulness 1/10 Language dart

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Contributed on Sep 12 2023

YOU.com

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dart null aware operator ??

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print(1 ?? 3); // <-- Prints 1.
print(null ?? 12); // <-- Prints 12.

int a; // The initial value of a is null.
a ??= 3;
print(a); // <-- Prints 3.

a ??= 5;
print(a); // <-- Still prints 3.

Popularity 10/10 Helpfulness 2/10 Language dart

Source: Grepper

Tags: dart

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Contributed on Nov 17 2020

Jolly Jellyfish

0 Answers Avg Quality 2/10

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how many null aware operator types are in flutter

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