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Re: Large data ahead [message #51124 is a reply to message #51123]

Wed, 30 January 2019 10:43

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

Tom1 wrote on Wed, 30 January 2019 10:22

Hi,
How about making the containers internally int64 and then offering both int and int64 interfaces in parallel?

The reason I am hesitant about this is following:

struct Item {
Vector<String> foo;
Vector<int> bar;
};

Now with 'int' size, this is 32 bytes. With 'int64', this grows by 16 bytes (50%) which would be wasted to store zeroes in 99.999% of cases...

Also, Vector having exactly 16 bytes has (very) subtle advantage, it is a 'nice' number (memory is allocated in multiplies of 16, adressing can be done with simple shift etc...

Mirek

[Updated on: Wed, 30 January 2019 10:43]

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