Jesserc

Solana Development Environment Setup Guide

This guide documents the exact toolchain versions and setup steps to work with the solana-ledger-tool v1.18.26 , including all common errors and their solutions.

Required Toolchain Versions

• Rust: 1.79.0 (can also be pinned via rust-toolchain.toml)
• Solana CLI: 1.18.26
• Anchor CLI: 0.29.0
• Anchor Lang: 0.29.0

Jesserc

package keeper

import (
	"math/big"

	sdkerrors "cosmossdk.io/errors"
	"cosmossdk.io/math"
	"github.com/cometbft/cometbft/libs/json"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/errors"

Jesserc

func TestParseWithdrawalMessages(t *testing.T) {
	pool := mempool.New(testutils.NewMemDB(t))
	// mempoolTxs := testapp.ToTxs(t, map[string]string{
	// 	"k3": "v3",
	// 	"k4": "v4",
	// })

	// for _, tx := range mempoolTxs {
	// 	require.NoError(t, pool.Enqueue(tx))

Jesserc

Binary, Bits, Bytes, and Hexadecimal: A Beginner's Guide

1. Binary (Base-2)

Binary is a number system that uses only two digits: 0 and 1. Each digit is called a "bit" (binary digit).

Examples:

0 in binary = 0
1 in binary = 1
2 in binary = 10

Jesserc

Binary, Bits, Bytes, and Hexadecimal: A Beginner's Guide

1. Binary (Base-2)

Binary is a number system that uses only two digits: 0 and 1. Each digit is called a "bit" (binary digit).

Examples:

0 in binary = 0
1 in binary = 1
2 in binary = 10

Jesserc

Binary, Bits, Bytes, and Hexadecimal: A Beginner's Guide

1. Binary (Base-2)

Binary is a number system that uses only two digits: 0 and 1. Each digit is called a "bit" (binary digit).

Examples:

0 in binary = 0
1 in binary = 1
2 in binary = 10

Jesserc

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

contract MyFirstContract{

    // string, integers (uint, int), address
    address myAddress = 0x5B38Da6a701c568545dCfcB03FcB875f56beddC4;
    uint number = 2024;
    int negativeNumber = -2024;
    string name = "Jesserc";

Jesserc

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "contracts/1_Storage.sol";

contract Example {
// DATA-TYPES
/* 
strings, boolean, integers (uint8,16,24,32,40,48,56,64,72,80,88,96,104,...256, int8,int16...int256), bytes1,2,3,4,5,6...32 (value types) and then bytes(reference type), address, arrays, structs, enums, mappings
uint8 - 2**8 -1
uint16  => 2**16 -1

Jesserc

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "contracts/1_Storage.sol";

contract Example {
// DATA-TYPES
/* 
strings, boolean, floats -> 2/10 -> 0.004, 0.04498, 0.033444 (does not exist), integers (uint, int), address, arrays, mapping, structs, enums, bytes

 */

Jesserc

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

struct InnerStruct {
    uint256 innerValue;
    bytes data;
}

struct OuterStruct {
    uint256 outerValue;