Question

我想将protected override void OnSourceInitialized(EventArgs e) { // For added compatibility, turn off hardware rendering HwndSource hwndSource = PresentationSource.FromVisual(this) as HwndSource; HwndTarget hwndTarget = hwndSource.CompositionTarget; hwndTarget.RenderMode = RenderMode.SoftwareOnly; base.OnSourceInitialized(e); }这样的表达式拆分为using System.Windows.Interop;

-1*-0.8/5-5这就是我现在使用[ '-1', '*', '-0.8', '/', '5', '-', '5' ]

获取的内容

对此有何建议？

Answer 1

这是一个解决方案。它正确检测到-，/，*，([*\/]|\b\s*-|\b\s*\+)并接受使用空格：

var expression = "-1*-0.8/5-5";
console.log(expression.split(/([*\/]|\b\s*-|\b\s*\+)/g));

＆＃13;

var expression = "-1 * -0.8 / (5 - 5)";
console.log(expression.split(/([*\/()]|\b\s*[-+])/g));

＆＃13;

filter that handles the authorization

从 Demo on regex101 ，这是一个改进的接受括号

＆＃13;

JOIN

＆＃13;

使用正则表达式拆分算术表达式

1 个答案:

filter that handles the authorization

Wiktor's comment