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I have looked everywhere but I couldnt find any information related to this topic. Also, Is there a java - like Long / BigDecimal datatype in dart?
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In the Dart programming language, an integer is represented by the int keyword. As we may know, integers include whole numbers (i.e., non-decimal positive and negative numbers). For every integer, four bytes are allocated in the memory.
Everything in Dart is an object, int, double or num may look like keywords but they are built-in abstract classes.
To read an integer from console in Dart, first read a line from console using stdin. readLineSync() method, and then convert this line (string) into an integer using int. parse() method.
Remarks. The value of this constant is 2,147,483,647; that is, hexadecimal 0x7FFFFFFF.
That depends if you are running in the Dart VM or compiling to JavaScript.
On the Dart VM an int is arbitrary precision and has no limit.
When compiling to JavaScript you are actually using floating point numbers, since that is all that JavaScript supports. This means you are restricted to representing integers within the range -253 to 253
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Dart 2
For dart2js generated JavaScript Pixel Elephants answer is still true.
within the range -253 to 253
Other execution platforms have fixed-size integers with 64 bits.
The type BigInt was added to typed_data
Since Dart 2.0 will switch to fixed-size integers, we also added a
BigIntclass to thetyped_datalibrary. Developers targeting dart2js can use this class as well. TheBigIntclass is not implementing num, and is completely independent of the num hierarchy.
Dart 1
There are also the packages
- https://pub.dartlang.org/packages/bignum
- https://pub.dartlang.org/packages/decimal
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