How to create a BigInt in Dart

user_3681880 0
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I'm trying to create a BigInt in Dart just to learn about BigInt.

I tried this

var x = 237462836487263478235472364782364827648632784628364;

But that gives an error because the compiler thinks its an int but greater than 64 bits.

Then I saw this answer, so I tried this:

var x = BigInt.from(237462836487263478235472364782364827648632784628364);

That still gives the same error:

The integer literal 237462836487263478235472364782364827648632784628364 can't be represented in 64 bits.

Try using the BigInt class if you need an integer larger than 9,223,372,036,854,775,807 or less than -9,223,372,036,854,775,808.

I thought I was using the BigInt class.

dart bigint integer
1 Answers

Looking at the source code, it turns out the way to create a BigInt from a number literal is to parse it from a string:

final x = BigInt.parse('237462836487263478235472364782364827648632784628364');
final y = BigInt.from(1);
final z = x + y;
// 237462836487263478235472364782364827648632784628365
user_36818800
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