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Raw Slice

Icon LinkRawSlice

A dynamic array of values can be represented using the RawSlice type. A raw slice can be a value reference or a raw pointer. 

// #import { RawSlice };
 
const rawSlice: RawSlice = [40, 41, 42];
 
const { value } = await contract.functions
	.raw_slice_comparison(rawSlice)
	.txParams({ gasLimit: 10_000 })
	.simulate();
 
expect(value).toBeTruthy();

Icon LinkUsing a RawSlice

The RawSlice type can be integrated with your contract calls. Consider the following contract that can compare and return a RawSlice: 

contract;
 
abi RawSliceTest {
fn echo_raw_slice(value: raw_slice) -> raw_slice;
fn raw_slice_comparison(value: raw_slice) -> bool;
}
 
impl RawSliceTest for Contract {
fn echo_raw_slice(value: raw_slice) -> raw_slice {
	value
}
 
fn raw_slice_comparison(value: raw_slice) -> bool {
	let vec: Vec<u64> = Vec::from(value);
 
	vec.len() == 3 && vec.get(0).unwrap() == 40 && vec.get(1).unwrap() == 41 && vec.get(2).unwrap() == 42
}
}

A RawSlice can be created using a native JavaScript array of numbers or Big Numbers, and sent to a Sway contract: 

// #import { RawSlice };
 
const rawSlice: RawSlice = [8, 42, 77];
 
const { value } = await contract.functions
	.echo_raw_slice(rawSlice)
	.txParams({ gasLimit: 10_000 })
	.simulate();
 
expect(value.map((v: BN) => v.toNumber())).toStrictEqual(rawSlice);