if

Conditionally execute a block of commands, with an optional else block.

Supports runtime fields inside smart blocks. Use explicit @helper! expressions or captured outputs; other fields are evaluated at build time.

Syntax

if <condition> <thenBlock> [elseBlock]

Arguments

Name	Type	Evaluation	Description
condition	bool	Runtime in smart blocks	Whether to execute the then block
thenBlock	block	Build time	Commands when condition is true
[elseBlock]	block	Build time	Commands when condition is false

Examples

# Simple condition
if true (
  print "yes"
)

# Boolean expression
if @bool(1 == 1) (
  print "equal"
)

# If-else
set $x 10
if @bool($x > 0) (
  print "positive"
) (
  print "non-positive"
)

See Also

• @bool — boolean expressions