> For the complete documentation index, see [llms.txt](https://0xkowloon.gitbook.io/anchor-for-evm-developers/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://0xkowloon.gitbook.io/anchor-for-evm-developers/function-selector.md).

# Function Selector

**EVM**

```bash
cast keccak 'safeTransferFrom(address,address,uint256)' | cut -c 1-10
```

**Solana**

```typescript
const crypto = require("crypto");
const hash = crypto.createHash("sha256").update("global:your_function_name").digest();
const discriminator = hash.slice(0, 8);
Array.from(discriminator) // [114, 204, 207, 109, 109, 135, 17, 164]
```