about_Join

TOPIC
	about_join

SHORT DESCRIPTION
	Describes how the join operator (-join) combines multiple strings into a 
	single string.


LONG DESCRIPTION
	The join operator concatenates a set of strings into a single string. The
	strings are appended to the resulting string in the order that they appear
	in the command. 


  Syntax
	The following diagram shows the syntax for the join operator.

		-Join <String[]>
		<String[]> -Join <Delimiter>


  Parameters
	String[]
		Specifies one or more strings to be joined.


	Delimiter
		Specifies one or more characters placed between the concatenated strings.
		The default is no delimiter ("").
	

  Remarks
	The unary join operator (-join <string[]>) has higher precedence than
	a comma. As a result, if you submit a comma-separated list of strings to
	the unary join operator, only the first string (before the first comma) 
	is submitted to the join operator.


	To use the unary join operator, enclose the strings in parentheses, or
	store the strings in a variable, and then submit the variable to join.


	For example:

		-join "a", "b", "c"
		a
		b
		c

		-join ("a", "b", "c")
		abc


		$z = "a", "b", "c"
		-join $z
		abc


  Examples
	The following statement joins three strings:

	
		-join ("Windows", "PowerShell", "2.0")
		WindowsPowerShell2.0

	
	The following statement joins three strings delimited by a space:

	
		"Windows", "PowerShell", "2.0" -join " "
		Windows PowerShell 2.0


	The following statements use a multiple-character delimiter to join 
	three strings:


		$a = "WIND", "SP", "ERSHELL" 
		$a -join "OW"
		WINDOWSPOWERSHELL


	The following statement joins the lines in a here-string into
	a single string. Because a here-string is one string, the lines in the
	here-string must be split before they can be joined. You can use this 
	method to rejoin the strings in an XML file that has been saved in a 
	here-string:


		$a = @'
		a
		b
		c
		'@

		(-split $a) -join " "
		a b c
	

SEE ALSO
	about_Operators
	about_Comparison_Operators
	about_Split