Create a function with optional call variables

Powershell provides a lot of built-in support for common parameter scenarios, including mandatory parameters, optional parameters, “switch” (aka flag) parameters, and “parameter sets.”

By default, all parameters are optional. The most basic approach is to simply check each one for $null, then implement whatever logic you want from there. This is basically what you have already shown in your sample code.

If you want to learn about all of the special support that Powershell can give you, check out these links:

about_Functions

about_Functions_Advanced

about_Functions_Advanced_Parameters

Related Posts:

  1. How to run an EXE file in PowerShell with parameters with spaces and quotes
  2. How to run an EXE file in PowerShell with parameters with spaces and quotes
  3. Passing multiple values to a single PowerShell script parameter
  4. “Parameter” vs “Argument”
  5. Connect-AzAccount – how to avoid azure device authentication?
  6. How do I concatenate strings and variables in PowerShell?
  7. PowerShell equivalent to grep -f
  8. Running a command as Administrator using PowerShell?
  9. Setting Windows PowerShell environment variables
  10. How do I concatenate strings and variables in PowerShell?
  11. Replace substring in PowerShell
  12. Echo equivalent in PowerShell for script testing
  13. Echo equivalent in PowerShell for script testing
  14. PowerShell says “execution of scripts is disabled on this system.”
  15. How to use the curl command in PowerShell?
  16. PowerShell and the -contains operator
  17. Change directory in PowerShell
  18. How to handle command-line arguments in PowerShell
  19. Splitting a string into separate variables
  20. How to split string by string in Powershell
  21. How to split string by string in Powershell
  22. How to export data to CSV in PowerShell?
  23. Downloading a file with PowerShell
  24. Terminating a script in PowerShell
  25. Passing parameters to a Bash function
  26. Terminating a script in PowerShell
  27. Prompt for user input in PowerShell
  28. How to upgrade PowerShell version from 2.0 to 3.0
  29. How do I concatenate strings and variables in PowerShell?
  30. Array.Add vs +=
  31. PowerShell and the -contains operator
  32. PowerShell string interpolation syntax
  33. How to write to the console in PowerShell?
  34. How do you pass a function as a parameter in C?
  35. Function return value in PowerShell
  36. PowerShell ‘Or’ Statement
  37. powershell -Or operator not working
  38. How do you pass a function as a parameter in C?
  39. How to decode a Base64 string?
  40. Copy file remotely with PowerShell
  41. How to find the Windows version from the PowerShell command line
  42. Read file line by line in PowerShell
  43. How do you pass a function as a parameter in C?
  44. Path to Powershell.exe (v 2.0)
  45. Azure Powershell Select-AzureSubscription with subscription id
  46. error: “initializer expression list treated as compound expression”
  47. How to unzip a file in Powershell?
  48. You cannot call a method on a null-valued expression
  49. How can I replace every occurrence of a String in a file with PowerShell?
  50. Unix tail equivalent command in Windows Powershell
  51. Create directory if it does not exist
  52. Copy-Item is overwriting by default
  53. Pass a JavaScript function as parameter
  54. The term ‘Get-ADUser’ is not recognized as the name of a cmdlet
  55. How to print environment variables to the console in PowerShell?
  56. The term ‘nmake’ is not recognized
  57. Ternary operator in PowerShell
  58. Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
  59. Call PowerShell script PS1 from another PS1 script inside Powershell ISE
  60. Does PowerShell has something like “echo off” and “echo on” trigger?
  61. Convert a string to datetime in PowerShell
  62. LDAP query in PowerShell
  63. PowerShell: Comparing dates
  64. Press any key to continue
  65. accessing the $args array in powershell
  66. How do I do ‘dir /s /b’ in PowerShell?
  67. Create Log File in Powershell
  68. What does the & symbol in powershell mean?
  69. What does the double asterisks mean?
  70. How to enter a multi-line command
  71. How to break lines in PowerShell?
  72. How to tell PowerShell to wait for each command to end before starting the next?
  73. How to convert string to integer in PowerShell
  74. Powershell: GetType used in PowerShell, difference between variables
  75. One Powershell Script calling another with parameters
  76. Javascript- Multiplying 2 numbers and return number
  77. Concatenate files using PowerShell
  78. Upload files with FTP using PowerShell
  79. Powershell send-mailmessage – email to multiple recipients
  80. Sometimes PowerShell stops sending output until I press enter. Why?
  81. In a PowerShell script, how can I check if I’m running with administrator privileges?
  82. What is the literal escape character in Powershell?
  83. Define a global variable in a JavaScript function
  84. How to run a PowerShell script
  85. How to run powershell script from .ps1 file?
  86. Return array in a function
  87. How to create a jQuery function (a new jQuery method or plugin)?
  88. Check if a file exists or not in Windows PowerShell?
  89. Python Calling Function from Another File
  90. PLS-00201 – identifier must be declared
  91. What is the difference between call and apply?
  92. What is “String args[]”? parameter in main method Java
  93. Can’t start hostednetwork
  94. How would I call a javascript function in html?
  95. Function for C++ struct
  96. Call Python function from JavaScript code
  97. What does the construct x = x || y mean?
  98. fixing errors on a program to call methods in java
  99. anchor jumping by using javascript
  100. PHP Call to undefined function

Leave a Comment