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Does Dart have an equivalent to the "sizeof" operator? Or, how can I find out how many bytes a class instance is using in memory?
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The size of object of a class depends on the no. of bytes occupied by the data members of the class. }; The object of class student will occupy space of 8 bytes.
One way to get an estimate of an object's size in Java is to use getObjectSize(Object) method of the Instrumentation interface introduced in Java 5. As we could see in Javadoc documentation, the method provides “implementation-specific approximation” of the specified object's size.
Because the size of primitive types is explicitly mandated by the Java language. There is no variance between JVM implementations. Moreover, since allocation is done by the new operator depending on its argument there is no need to specify the amount of memory needed.
Java Class Any class in Java is nothing but an object with a mix of all mentioned components: header (8 or 12 bytes for 32/64 bit os). primitive (type bytes depending on the primitive type). object/class/array (4 bytes reference size).
There's no sizeof operator in dart.
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