Snippets tagged “functions”

In PHP, global variables can be accessed and modified from within functions using the global keyword.

In Python, you can use the built-in callable() function to check if a variable is a function.

In the following snippet, we are going to represent how JavaScript closures work. The easiest way of learning how to use them is investigating examples.

Read this JavaScript tutorial and learn the methods and undertake some steps which will help you make the first letter in the string uppercase easily.

In this tutorial, you will read and learn information about the two methods of checking whether a function exists in JavaScript or it has not been defined.

This snippet gives you an opportunity to learn how to get the first element of an array using PHP. You can choose among the provided functions.

To list all functions in a module, you can use the dir() function to get a list of all the names defined in the module, and then use the inspect module to check if each name is a function.

In this snippet, we will demonstrate to you how to use one of the common PHP functions: func_get_arg().

Read this JavaScript tutorial and find two easy methods of writing a function that will accept an indefinite number of arguments. See and try examples.

In Python, you can use global variables in a function by declaring the variable as global within the function.

Python code can run faster in a function because of something called "Just-In-Time" (JIT) compilation.