what does -lm mean code example

Example: what does @{{}} mena

Since many JavaScript frameworks also use "curly" braces to indicate a given expression should be displayed in the browser, you may use the @ symbol to inform the Blade rendering engine an expression should remain untouched. For example:

<h1>Laravel</h1>

Hello, @{{ name }}.

// Meaning that the variable "name" in this case will not try to be intrepreted by blade