toBool

Converts a value to a boolean.

Syntax

toBool(value)

Arguments

• value - The value to convert. Supported types and conversions:

  • bool - returned as-is

  • string - "true", "1", "yes" become true; "false", "0", "no", "" become false

  • int - 0 is false, any other value is true

  • float - 0 is false, any other value is true

  • null - becomes false

Examples

String conversions

toBool("true")  // true
toBool("yes")   // true
toBool("1")     // true
toBool("false") // false
toBool("no")    // false
toBool("0")     // false
toBool("")      // false

Numeric conversions

toBool(1)   // true
toBool(0)   // false
toBool(3.14) // true

Null

toBool(null) // false

CLI usage — convert a string flag to boolean

$ echo '{"enabled": "yes"}' | dasel -i json 'toBool(enabled)'
true