Complete implementation of standard typed arrays
Opened this issue · 4 comments
Current code only partially implements standard features of typed arrays. This issue provides a place to track progress and view it all in one shot.
PRs welcome!
Constructor
-
new TypedArray() -
new TypedArray(length) -
new TypedArray(typedArray) -
new TypedArray(object) -
new TypedArray(buffer): see here
Unrelevant (= won't implement)
Static properties
-
BYTES_PER_ELEMENT -
name -
get BitArray[@@species]
Static methods
-
from() -
of()
Instance properties
-
buffer -
byteLength -
byteOffset -
length
Instance methods
-
at(): see here for discussion -
copyWithin() -
entries() -
every() -
fill() -
filter() -
find() -
findIndex() -
forEach() -
includes() -
indexOf() -
join() -
keys() -
lastIndexOf() -
map() -
reduce() -
reduceRight() -
reverse() -
set() -
slice() -
some() -
sort() -
subarray() -
values() -
toString(): see here for note on implementation. -
[@@iterator]()
Irrelevant (= won't implement)
-
toLocaleString(): there is no local variation to displaying 1s or 0s.
Fwiw, I got a hacky horrible inefficient version of "ArrayBuffer to BitArray" to work via the following
const vals = []
for(const b of new Uint8Array(buffer)) {
for (let i = 0; i < 8; i++) {
vals.push(!!(b & (1 << i)))
}
}
let arr = BitArray.from(vals)
Obviously the correct version doesn't have so much unnecessary byte->string->byte conversion :)
Indeed! :)
Tbh, I have not yet made my mind whether it makes sense to construct a BitArray by passing an array buffer to the constructor. FFS...
I actually have a use case! I have a settings object in my react app; it has a great number of boolean or near boolean enums. I want to store the user settings in a query param, so I load the settings into a bit array, and then turn that into base64 from that array buffer. This allows the settings to be shared or survive a page reload. To deserialize, I load the bas64 string back into array buffer, and then into the bitarray to reconstruct the settings.