Camotelli rayeaster

Falsehoods that Ethereum programmers believe

I recently stumbled upon Falsehoods programmers believe about time zones, which got a good laugh out of me. It reminded me of other great lists of falsehoods, such as about names or time, and made me look for an equivalent for Ethereum. Having found none, here is my humble contribution to this set.

About Gas

Calling `estimateGas` will return the gas required by my transaction

Calling estimateGas will return the gas that your transaction would require if it were mined now. The current state of the chain may be very different to the state in which your tx will get mined. So when your tx i

How do I retrieve the "COMP earned" value?

With a Smart Contract or JSON RPC

Get the value of COMP earned for an address that uses the Compound protocol. This can be done using the Lens contract with JSON RPC or another Smart Contract. If you do an eth_call with JSON RPC, it is free (no gas costs).

Use the getCompBalanceMetadataExt method in the Lens contract https://etherscan.io/address/0xdCbDb7306c6Ff46f77B349188dC18cEd9DF30299#code
Lens address is posted here https://github.com/compound-finance/compound-protocol/blob/master/networks/mainnet.json#L31
Here is the definition https://github.com/compound-finance/compound-protocol/blob/master/contracts/Lens/CompoundLens.sol#L453

This gist has been deprecated. Please refer to the Gnosis Safe Devloper portal for all resources or reach out to the team via Discord.

	###########
	# Imports #
	###########

	# the RPCs file should include RPC URLs and Etherscan API Keys for relevant networks
	# (in a separate file so they don't get committed)
	source "$(dirname "$0")/rpcs.sh"
	# any useful addresses for various networks for easy reference
	source "$(dirname "$0")/addresses.sh"
	# any useful functions and definitions for interacting with Seaport

	/* ------------------------ */
	// Call Vault Manager (DsProxyActions.sol)
	/* ------------------------ */
	function callVaultManager (bytes memory _data) public payable {
	IDSProxy proxy = IDSProxy(dss_proxy);
	proxy.execute.value(msg.value)(vault_manager, _data);
	}

	function callVaultManager (uint256 _amount, bytes memory _data) public {
	IDSProxy proxy = IDSProxy(dss_proxy);

	/***
	* Shoutouts:
	*
	* Bytecode origin https://www.reddit.com/r/ethereum/comments/6ic49q/any_assembly_programmers_willing_to_write_a/dj5ceuw/
	* Modified version of Vitalik's https://www.reddit.com/r/ethereum/comments/6c1jui/delegatecall_forwarders_how_to_save_5098_on/
	* Credits to Jorge Izquierdo (@izqui) for coming up with this design here: https://gist.github.com/izqui/7f904443e6d19c1ab52ec7f5ad46b3a8
	* Credits to Stefan George (@Georgi87) for inspiration for many of the improvements from Gnosis Safe: https://github.com/gnosis/gnosis-safe-contracts
	*
	* This version has many improvements over the original @izqui's library like using REVERT instead of THROWing on failed calls.
	* It also implements the awesome design pattern for initializing code as seen in Gnosis Safe Factory: https://github.com/gnosis/gnosis-safe-contracts/blob/master/contracts/ProxyFactory.sol

	@ECHO OFF
	ECHO ====================================================================
	ECHO Sophos Removal v2.0 - Ed Cooper/Kyle Weller
	ECHO Removes Sophos v7 - v10
	ECHO ====================================================================
	ECHO.
	ECHO.
	IF NOT EXIST "%~dp0\msizap.exe" GOTO MSIZAPNOTFOUND
	ECHO Administrative permissions required. Detecting permissions...
	ECHO.

	/*
	* Demonstrate JavaScript floating point math bugs by showing
	* which two-decimal-place numbers between 0.00 and 1.00 inclusive
	* have fractional parts after being multiplied by one hundred.
	*/
	var i = 0.00;

	for (n = 0; n <= 100; ++n) {
	j = i * 100;
	if (Math.round(j) != j) {

	// imports a couple of java tasks
	apply plugin: "java"

	// List available tasks in the shell
	> gradle tasks

	// A Closure that configures the sourceSets Task
	// Sets the main folder as Source folder (where the compiler is looking up the .java files)
	sourceSets {
	main.java.srcDir "src/main"