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12. Functions in Powershell Part 1

Functions
  • Simple usage
PS C:\Users\Windows-32\Desktop> function add { 1 + 3 }
PS C:\Users\Windows-32\Desktop> add
4
PS C:\Users\Windows-32\Desktop>

  • Parameters of a PowerShell function.

    • $args
     PS C:\Users\Windows-32\Desktop> function paramshow { $args }
 PS C:\Users\Windows-32\Desktop> paramshow
 PS C:\Users\Windows-32\Desktop> paramshow "Hi"
 Hi
 PS C:\Users\Windows-32\Desktop> paramshow 666
 666
 PS C:\Users\Windows-32\Desktop>
     PS C:\Users\Windows-32\Desktop> function paramadd { $args[0] + $args[1] }
 PS C:\Users\Windows-32\Desktop> paramadd 3 7
 10
 PS C:\Users\Windows-32\Desktop>
    • Declaring parameters
     PS C:\Users\Windows-32\Desktop> function newFunction ( $num1, $num2 ) { $num1 * $num2 }
 PS C:\Users\Windows-32\Desktop> newFunction 2 6
 12
 PS C:\Users\Windows-32\Desktop>
    • Positional and named parameters
     PS C:\Users\Windows-32\Desktop> function posfunc ($param1, $param2) { $param1 }
 PS C:\Users\Windows-32\Desktop> posfunc -param1 2 -param2 4
 2
 PS C:\Users\Windows-32\Desktop> posfunc 2 4
 2
 PS C:\Users\Windows-32\Desktop> posfunc -param2 2 -param1 4
 4
 PS C:\Users\Windows-32\Desktop>