You will most often use Bash functions to make your shell life easier; instead of typing out complex command pipelines, create a function and inject arguments. You'd place these in your bashrc file, ...
By defining Microsoft PowerShell functions within PowerShell modules, you can organize your scripts, avoid duplicating code, ...
If you are building PowerShell longer than a few lines, it is good practice to break up your code into reusable snippets. This way you can only call the code snippet over and over instead of ...
Sometimes using ValidateSet isn't enough -- for instance, when you have multiple functions with the same parameter that you need to perform a task on. PowerShell has a data type called an enum, which ...
The C and C++ standards do not specify the order of evaluation for function arguments. This can lead to subtle portability problems. As I explained in my column last month (“As Precise As Possible”), ...