Foreach As Key Value Loop - Revision history

UberFoX: 1 revision

2015-06-14T12:37:47Z

1 revision

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Revision as of 12:37, 14 June 2015

UberFoX: 1 revision

2014-08-11T21:41:08Z

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Revision as of 21:41, 11 August 2014

UberFoX: /* Example */

2014-08-11T20:19:18Z

Example

← Older revision		Revision as of 20:19, 11 August 2014
Line 69:		Line 69:

	println( "Key '$key' \| Value '$value'" ) Foreach ($var as $key => $value);		println( "Key '$key' \| Value '$value'" ) Foreach ($var as $key => $value);
		+	</syntaxhighlight>
		+
		+	Using from
		+
		+	<syntaxhighlight lang="sputnik">
		+	$var = array(
		+	"One" => 100,
		+	"Two" => 200,
		+	"Three" => 300,
		+	"Four" => 300
		+	);
		+
		+	Foreach ($var as $key => $value from 1)
		+	{
		+	println( "Key '$key' \| Value '$value'" );
		+	}
		+	</syntaxhighlight>
		+
		+	Using from and to
		+
		+	<syntaxhighlight lang="sputnik">
		+	$var = array(
		+	"One" => 100,
		+	"Two" => 200,
		+	"Three" => 300,
		+	"Four" => 300
		+	);
		+
		+	Foreach ($var as $key => $value from 1 to 2)
		+	{
		+	println( "Key '$key' \| Value '$value'" );
		+	}
	</syntaxhighlight>		</syntaxhighlight>

	[[Category:Core Function]]		[[Category:Core Function]]

UberFoX at 20:15, 11 August 2014

2014-08-11T20:15:13Z

← Older revision		Revision as of 20:15, 11 August 2014
Line 7:		Line 7:
	<pre>		<pre>
	foreach( <expression> as <key> => <value> )		foreach( <expression> as <key> => <value> )
		+	{
		+	statements
		+	...
		+	}
		+	foreach( <expression> as <key> => <value> from <offset> )
		+	{
		+	statements
		+	...
		+	}
		+	foreach( <expression> as <key> => <value> from <start> to <end> )
	{		{
	statements		statements

UberFoX: /* Remarks */

2014-08-11T20:13:13Z

Remarks

← Older revision		Revision as of 20:13, 11 August 2014
Line 29:		Line 29:
	=== Remarks ===		=== Remarks ===

−	~~For~~...As..Key..Value statements may be nested.	+	Foreach...As..Key..Value statements may be nested.
−		+
−	~~If you wish to edit an array as you loop through it check out [[Core Function Each\|Each( <array> )]] command see its examples one of them should tell you how to do this~~.	+

	=== Example ===		=== Example ===

UberFoX at 14:32, 8 August 2014

2014-08-08T14:32:07Z

← Older revision		Revision as of 14:32, 8 August 2014
Line 61:		Line 61:

	println( "Key '$key' \| Value '$value'" ) Foreach ($var as $key => $value);		println( "Key '$key' \| Value '$value'" ) Foreach ($var as $key => $value);
−	~~</syntaxhighlight>~~
−
−	~~Example of using Yield here~~
−
−	~~<syntaxhighlight lang="sputnik">~~
−	~~my $array = array("One" => "The", "Two" => "cat", "Three" => "and", "Four" => "the", "Five" => "dog");~~
−
−	~~List ( $k, $v ) = Cat($array);~~
−	~~say "Key is: $k, value is: $v";~~
−	~~List ( $k, $v ) = Cat($array);~~
−	~~say "Key is: $k, value is: $v";~~
−	~~List ( $k, $v ) = Cat($array);~~
−	~~say "Key is: $k, value is: $v";~~
−	~~List ( $k, $v ) = Cat($array);~~
−	~~say "Key is: $k, value is: $v";~~
−	~~List ( $k, $v ) = Cat($array);~~
−	~~say "Key is: $k, value is: $v";~~
−
−	~~Function Cat( &$array )~~
−	{
−	~~foreach( $array as $key => $value)~~
−	~~Yield return array($key, $value);~~
−	}
−	~~// Prints~~
−	~~// Key is: One, value is: The~~
−	~~// Key is: Two, value is: cat~~
−	~~// Key is: Three, value is: and~~
−	~~// Key is: Four, value is: the~~
−	~~// Key is: Five, value is: dog~~
−	~~// Yield is used to save the position in the array etc~~
−	~~// then continue from that position the next time you~~
−	~~// do a loop etc~~
−	~~// So here it saves the position each time and gives~~
−	~~// the next item in the array each time you call the~~
−	~~// function~~
	</syntaxhighlight>		</syntaxhighlight>

	[[Category:Core Function]]		[[Category:Core Function]]

UberFoX: Created page with "= Foreach As Key Value = === Description === Loop based on an expression.

 foreach(  as  =>  ) {     statements     ... }

=== Parameters =..."

2014-08-08T13:01:52Z

Created page with "= Foreach As Key Value = === Description === Loop based on an expression. <pre> foreach( <expression> as <key> => <value> ) { statements ... } </pre> === Parameters =..."

New page

= Foreach As Key Value =

=== Description ===

Loop based on an expression.

<pre>
foreach( <expression> as <key> => <value> )
{
statements
...
}
</pre>

=== Parameters ===

==== expression ====

An expression needs to be an array for this loop to happen.

==== key ====

The variable to place the key in most common as a $variable.

==== value ====

The variable to place the value in most common as a $variable.

=== Remarks ===

For...As..Key..Value statements may be nested.

If you wish to edit an array as you loop through it check out [[Core Function Each|Each( <array> )]] command see its examples one of them should tell you how to do this.

=== Example ===

Here we cycle through binary data :

<syntaxhighlight lang="sputnik">
$var = array(
"One" => 100,
"Two" => 200,
"Three" => 300
);

Foreach ($var as $key => $value)
{
println( "Key '$key' | Value '$value'" );
}
</syntaxhighlight>

A reverse foreach

<syntaxhighlight lang="sputnik">
$var = array(
"One" => 100,
"Two" => 200,
"Three" => 300
);

println( "Key '$key' | Value '$value'" ) Foreach ($var as $key => $value);
</syntaxhighlight>

Example of using Yield here

<syntaxhighlight lang="sputnik">
my $array = array("One" => "The", "Two" => "cat", "Three" => "and", "Four" => "the", "Five" => "dog");

List ( $k, $v ) = Cat($array);
say "Key is: $k, value is: $v";
List ( $k, $v ) = Cat($array);
say "Key is: $k, value is: $v";
List ( $k, $v ) = Cat($array);
say "Key is: $k, value is: $v";
List ( $k, $v ) = Cat($array);
say "Key is: $k, value is: $v";
List ( $k, $v ) = Cat($array);
say "Key is: $k, value is: $v";

Function Cat( &$array )
{
foreach( $array as $key => $value)
Yield return array($key, $value);
}
// Prints
// Key is: One, value is: The
// Key is: Two, value is: cat
// Key is: Three, value is: and
// Key is: Four, value is: the
// Key is: Five, value is: dog
// Yield is used to save the position in the array etc
// then continue from that position the next time you
// do a loop etc
// So here it saves the position each time and gives
// the next item in the array each time you call the
// function
</syntaxhighlight>

[[Category:Core Function]]