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Other 2021-09-12 11:05:01
Expected a state variable declaration. If you intended this as a fallback function or a function to handle plain ether transactions, use the "fallback" keyword or the "receive" keyword instead.
pragma solidity >=0.4.22 <0.6.0; contract OwnedToken { // `TokenCreator` is a contract type that is defined below. // It is fine to reference it as long as it is not used // to create a new contract. TokenCreator creator; addres... Add solution -
Java 2021-09-12 07:15:03
Calculate area of rectangle using default constructor in java
import java.util.*; class RectangleShape { int area, length, breadth; RectangleShape() { length = 50; breadth = 20; } void getArea() { area = length * breadth; System.out.println("Area of Rectangle ... Add solution -
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Javascript 2021-09-11 09:26:02
change boolean value on click react
class Q1 extends Component { constructor(props) { super(props); this.state = { page1: false, page2:false, page3:false } this.handleClick1= this.handleClick1.bind(this); this.handleClick2= this.handleClick2.bind(this); this.hand... Add solution -
Python 2021-09-10 16:03:03
how to convert a dense matrix into sparse matrix in python
# dense to sparse from numpy import array from scipy.sparse import csr_matrix # create dense matrix A = array([[1, 0, 0, 1, 0, 0], [0, 0, 2, 0, 0, 1], [0, 0, 0, 2, 0, 0]]) print(A) # convert to sparse matrix (CSR method) S = csr_matrix(A) print(S) # recon... Add solution
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