...

if(_out.AppleHarvestDate < _toDate('20210101'), 1,
    /* Evaluates to 1 if AppleHarvest Date is Before 1st January 2021*/

0
    /* and to 0 if it is not */

)

Layout for if()

...

if( condition, Statement 1 , // else Statement 2 )

...

Simple

For simple if() statements we recommend the following style of layout:

Note that when a statement in an if() clause is more than 1 line, wrap them in a do(), for example:

// Example code layout 
if( condition expression, Statement 1, 
// else 
    Statement 2 
)

...

    do(
        Statement 1,
        Statement 2,
        ... Statement n
    ),
 
// else
    Statement A
)

Complex

For more complex if() statements we recommend the following style and that comments are added:

// 

...

To make it easier to see that statements are correctly bracketed, the closing bracket should always line up with the start of the statement.

Layout for switch()

switch( 
    [ condition expression 1, Statement 1 ], 
    [ condition expression 2, Statement 2 ], 

// default _NULL 
)

...

Short description on what is being achieved when the if statement is true
if ( $foo > 10 &&
     $bar == "X" &&
      ( $baz == "Y" ||
         $qux == "Z" ),
 
            // description of what the statement is doing
            do (
                    Statement 1
            ),
 
// else, description of what the statement is doing
    Statement 2
)

Layout for switch()

Simple

For simple switch statements we recommend the following layout:

switch(
    [ condition expression 1, Statement 1 ],
    [ condition expression 2, Statement 2 ],
 
// default
    _NULL
)
 
switch(
    [ $foo > 100, $x = "HIGH" ],
    [ $bar > 50,  $x = "MEDIUM" ],
 
    // default
    $x = "LOW",
)

Complex

For switch statements that perform more advanced activities we recommend the following layout:

switch (
      // description of what the statement is doing
      [$foo == 100,
           $x = "HIGH"
      ],
 
      // description of what the statement is doing
      [$bar == 50,
           do (
                 $x = "Medium",
                 $x = toUpper($x)
           )
      ]
       
      // default
      do (
           $x = "LOW"
      )
)