If statement

• Avoid enclosing the condition with parentheses.

  Do's

  if valid {
      ...
  } else if active {
      ...
  }

  Don'ts

  if (valid) {
      ...
  } else if (active) {
      ...
  }

• Keep the else and else if keywords in the same line with the matching if or else if block's closing brace separated only by a single space.

Empty block

• Do not have any empty if, else if, or else blocks.

• If empty, add an empty line between the opening and closing braces.

  Example,

  if inProperSallaryRange {
      
  } else if inSallaryRange {
      
  } else {
      
  }

Match statement

The best practices related to the match statement are as follows.

Match patterns clause

• Block indent each pattern clause in its own line.

• Keep a single space before and after the => sign.

  Example,

  function foo(string|int|boolean a) returns string {
      match a {
          12 => {
              return "Value is '12'";
          }
      }
  
      return "Value is 'Default'";
  }

• If a pattern clause has more than one statement, block indent each statement in its own line.

  Example,

  match x {
      var [s, i] if s is string => {
          io:println("string");
      }
      var [s, i] if s is int => {
          io:println("int");
      }
  }

• If the pattern body is empty, then keep it as an empty block.

  Example,

  match x {
      var [s, i] if s is string => {}
      var [s, i] if s is int => {}
  }