我试着用下面的公式做一个宏:(a^2/(a+b))*b,我想确保不会被零除。#define SUM_A( x, y ) if( x == 0 || y == 0) { 0 } else { ( ( ( x * x ) / ( ( x ) + ( y ) ) ) * ( y ))}float a = 40, b = 10, result; printf("%f", res
SELECT X.vname, X.id, CONCAT(X.vname, '..' ,SELECT T.id FROM T WHERE T.x_id=X.id LIMIT 1, '..', 'some_text') FROM xtable AS X
结果为:vname_value..SELECT T.id FROM T WHERE T.x_id=X.id LIMIT 1..some_text
我正在尝试调用一个类似如下所示的实心函数: Order memory order, bytes memory signature使用web3j,我会创建类似于下面的函数,但是我不太确定如何表示顺序,它在实心中表示为一个结构。Uint256(takerAssetFillAmount), new Bytes32(signture));
new Function