select

Blazor: How to use the onchange event in when using @bind also?

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@bind is essentially equivalent to the having both value and @onchange, e.g.: <input @bind=”CurrentValue” /> Is equivalent to: <input value=”@CurrentValue” @onchange=”@((ChangeEventArgs e) => CurrentValue = e.Value.ToString())” /> Since you’ve already defined @onchange, instead of also adding @bind, just add value to prevent the clash: <select value=”@SelectedCustID” @onchange=”@CustChanged” class=”form-control”> @foreach (KeyGuidPair i in CustList) { <option … Read more

Why is epoll faster than select?

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There’s a lot of misinformation about this, but the real reason is this: A typical server might be dealing with, say, 200 connections. It will service every connection that needs to have data written or read and then it will need to wait until there’s more work to do. While it’s waiting, it needs to … Read more

Select parent element of known element in Selenium

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There are a couple of options there. The sample code is in Java, but a port to other languages should be straightforward. Java: WebElement myElement = driver.findElement(By.id(“myDiv”)); WebElement parent = (WebElement) ((JavascriptExecutor) driver).executeScript( “return arguments[0].parentNode;”, myElement); XPath: WebElement myElement = driver.findElement(By.id(“myDiv”)); WebElement parent = myElement.findElement(By.xpath(“./..”)); Obtaining the driver from the WebElement Note: As you can … Read more

Does a break statement break from a switch/select?

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Break statements, The Go Programming Language Specification. A “break” statement terminates execution of the innermost “for”, “switch” or “select” statement. BreakStmt = “break” [ Label ] . If there is a label, it must be that of an enclosing “for”, “switch” or “select” statement, and that is the one whose execution terminates (§For statements, §Switch … Read more

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