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| -rw-r--r-- | README.md | 23 |
1 files changed, 19 insertions, 4 deletions
@@ -3000,7 +3000,7 @@ const myPtr = ptr(myTypedArray); myTypedArray = new Uint8Array(toArrayBuffer(myPtr, 0, 32), 0, 32); ``` -**To read data from a pointer**: +**To read data from a pointer** You have two options. @@ -3018,14 +3018,15 @@ console.log( ); ``` -_Available in Bun v0.1.12+_ - For short-lived pointers, `read` is the fastest option: +_Available in Bun v0.1.12+_ + ```ts import { read } from "bun:ffi"; console.log( + // ptr, byteOffset read.u8(myPtr, 0), read.u8(myPtr, 1), read.u8(myPtr, 2), @@ -3033,7 +3034,21 @@ console.log( ); ``` -Read behaves similarly to `DataView`, but it can be faster because it doesn't need to create a `DataView` or `ArrayBuffer`. +`read` behaves similarly to `DataView`, but it can be faster because it doesn't need to create a `DataView` or `ArrayBuffer`. + +| `FFIType` | `read` function | +| --------- | --------------- | +| ptr | `read.ptr` | +| i8 | `read.i8` | +| i16 | `read.i16` | +| i32 | `read.i32` | +| i64 | `read.i64` | +| u8 | `read.u8` | +| u16 | `read.u16` | +| u32 | `read.u32` | +| u64 | `read.u64` | +| f32 | `read.f32` | +| f64 | `read.f64` | **Memory management with pointers**: |