Match values for >= etc

[robbla]

Currently Match only allows for exact matches like 3 or Gold.

Support for operators like >, <, >= etc would be great as well as the support for variables and formulas.

Added the request for this functionality following a slack mailthread.

[hasithaa]

@maheshika Can we move this issue https://github.com/ballerina-platform/ballerina-spec as this is a feature request to the language.

[hasithaa]

Spec supports this. My Bad. The current compiler doesn't support this. Hence Issue is moved back to Ballerina-lang.

According to the spec following should work.

match x {
  y if y is int && y > 5 => { }
}

[rdhananjaya]

Current implementation do support this operation with just a tiny modification to @hasithaa s answer.

match x {
  var y if y is int && y > 5 => { }
}

Not having the var in match-stmt makes it a const pattern. Only problem is we at the moment we can't mix and match these const patterns and other match-patterns in the same match statement.

[KavinduZoysa]

FIxed in sl-alpha.