What does the !! (double exclamation mark) operator do in JavaScript? Asked 16 years, 10 months ago Modified 1 year, 3 months ago Viewed 984k times

I've seen in some React/TypeScript implementations such as : ref={ ref => this.container = ref! } What does the exclamation point means in ref!? Is that something specific in TypeScript, or a new standard …

Dec 8, 2019 · I have found a code written in C# seemingly version 8.0. In the code, there is an exclamation mark before invoking a method. What does this part of the code mean, and above all, …

Jun 22, 2010 · In your examples the exclamation point means to force the action (e.g. :w! will overwrite an existing file and :q! will quit without saving). That said, there are many other uses depending on …

Nov 20, 2014 · In a text about Excel I have read the following: =SUM(!B1:!K1) when defining a name for a cell and this was entered into the Refers To field. What does this mean?

Oct 3, 2022 · Almost answered here. Which directs us to the code coverage for pull requests page. However, it doesn't say anywhere what this orange exclamation mark means.

Apr 25, 2024 · I just installed a package through NuGet, but it shows a yellow exclamation mark icon in my Solution Explorer, see screenshot below. Why does this happen, and how can I resolve it? There …

Jul 20, 2010 · Btw, if you had to replace an exclamation mark inside a variable how would you do that?

I have come across a problem involving exclamation marks and integers whilst reading a code in my reference book. Let us say I have declared an integer variable named number - int number = 0; I t...

Aug 20, 2017 · The exclamation mark (!) executes shell commands within a Jupyter Notebook cell when you type (!) followed by a shell command, Jupyter Notebook sends the command to the shell to run, …