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ColonelJ / ApprovalChecker.sol
Created April 1, 2021 00:08
ERC20 approval frontrunning prevention detector
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
* @dev Interface of the ERC20 standard as defined in the EIP.
interface IERC20 {
* @dev Returns the amount of tokens in existence.
ColonelJ /
Created October 26, 2019 00:54
TRON private key to address
import sys
import ecdsa
import hashlib
import base58
from sha3 import keccak_256
def privkey_to_address(privkey):
privkey = bytes.fromhex(privkey)
s = ecdsa.SigningKey.from_string(privkey, curve = ecdsa.SECP256k1)
pubkey = s.verifying_key.to_string().hex()
ColonelJ / SafeMath.sol
Last active March 28, 2023 18:02
Tronpix smart contract
pragma solidity ^0.5.0;
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
ColonelJ / gist:851875ed3a37dd6e10d4
Created January 11, 2015 17:39
TDM-GCC set Dwarf-2 binaries as the default (batch file). Also, delete cc.exe if it is present!
copy c++-dw2.exe c++.exe
copy cpp-dw2.exe cpp.exe
copy g++-dw2.exe g++.exe
copy gcc-ar-dw2.exe gcc-ar.exe
copy gcc-dw2.exe gcc.exe
copy gcc-nm-dw2.exe gcc-nm.exe
copy gcc-ranlib-dw2.exe gcc-ranlib.exe
copy gcov-dw2.exe gcov.exe
copy mingw32-c++-dw2.exe mingw32-c++.exe
copy mingw32-g++-dw2.exe mingw32-g++.exe
import Window
main : Signal Element
main = display <~ Window.dimensions
display (w, h) = flow down [width w <| centered txt1, width w <| centered txt2]
txt1 = toText "Reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeally long string"
txt2 = toText "Hello world"
ColonelJ / Elm example: Multitab GUI
Last active August 29, 2015 14:02
Elm Example: basic multitabbed text entry form
import Graphics.Input (input, button, Input)
import Graphics.Input.Field (input, button, defaultStyle, noContent, Content)
import Graphics.Input.Field
import Graphics.Element
import List
import Dict (Dict)
import Dict
import Maybe (maybe)
data DDict k v = DDict v (Dict k v)
ColonelJ / map2gen.v
Last active December 21, 2015 18:28 — forked from anonymous/map2gen.v
Inductive bvec (T : Set) : nat -> Set :=
| BLeaf : T -> bvec T 0
| BNode log2len : bvec T log2len -> bvec T log2len -> bvec T (S log2len).
Definition bvec_leaf T (v : bvec T 0) := let 'BLeaf a := v in a.
Definition bvec_l T n (v : bvec T (S n)) := let 'BNode n l _ := v in l.
Definition bvec_r T n (v : bvec T (S n)) := let 'BNode n _ r := v in r.
Fixpoint zip (T U V : Set) (f : T -> U -> V) n (u : bvec T n) :=
match u in bvec _ n return bvec U n -> bvec V n with