I swore I read that mysql dbs will store multiple bools in a row as bit maps in one byte. I can't prove it though
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just like electronic components, they sell the gates by the chip with multiple gates in them because it's cheaper
Could a kind soul ELI5 this? Well, maybe ELI8. I did quite a bit of programming in the 90-00s as part of my job, although nowadays I'm more of a script kiddie.
A boolean value only needs 1 bit (on or off) for true or false. However the smallest bit of addressable memory is a byte (8 bits) hence 7 are technically wasted.
For low memory devices you could instead store 8 different Boolean values in one single byte by using bit masking instead
I mean is it really a waste? What's minimum amount of bits most CPUs read in one cycle.
3GPP has an interesting way of serialising bools on the wire with ASN.1
NULL OPTIONAL
meaning only the type would be stored if true, otherwise it won't be set at all
pragma(pack) {
int a:1, b:1, ... h:1;
}
IIRC.