msg.sender not increasing the balance

I am trying to execute the following code obtained from`Solidity Tutorial pragma solidity 0.5.4; contract ERC20Token { string name; mapping(address => uint256) public balances; function mint() payable public { balances[msg.sender] += msg.value;//use tx.origin, } } contract MyContract { address public token; address payable wallet; constructor(address payable _wallet, address _token) public { wallet = _wallet; token…

Details

Katoolin is giving a syntax error

I am trying to install katoolin on Ubuntu 18.04 I have done- git clone https://github.com/LionSec/katoolin.git sudo cp katoolin/katoolin.py /usr/bin/katoolin sudo chmod a+x /usr/bin/katoolin sudo katoolin When I run sudo katoolin it gives the following error- File "/usr/bin/katoolin", line 8 print "Sorry. This script requires sudo privledges" ^ SyntaxError: Missing parentheses in call to 'print'. Did…

Details

Set font/font size/font scaling for single application window

Background: On my high resolution display, some applications—e.g. Mendeley—do not scale nicely like native apps. Currently, I scale up the entire app, using QT_SCALE_FACTOR=1.2 mendeleydesktop This works well, but also scales up the font. I would like to scale the font—but only the font—back down. Questions: 1: Is there are command to run a single…

Details