Print debugging statement: Difference between revisions

</pre>

<br>

{{libheader|Wren-debug}}

We can also rewrite this code using the above module which, whilst still quite basic, provides a more structured approach to debugging than the first version.

<syntaxhighlight lang="ecmascript">import "./fmt" for Fmt

import "./debug" for Debug

class Point {

construct new(x, y) {

_x = x

_y = y

}

x { _x }

y { _y }

toString { "(%(_x), %(_y))" }

}

var add = Fn.new { |x, y|

var result = x + y

Debug.print("x|y|result|result+1", 16, x, y, result, result + 1)

return result

}

add.call(2, 7)

var b = true

var s = "Hello"

var p = Point.new(2, 3)

var l = [1, "two", 3]

Debug.nl

Debug.print("b|s|p|l", 25, b, s, p, l)</syntaxhighlight>

{{out}}

<pre>

EXPR on line 16 of type Int : x = 2

EXPR on line 16 of type Int : y = 7

EXPR on line 16 of type Int : result = 9

EXPR on line 16 of type Int : result+1 = 10

NL

EXPR on line 25 of type Bool : b = true

EXPR on line 25 of type String : s = Hello

EXPR on line 25 of type Point : p = (2, 3)

EXPR on line 25 of type List : l = [1, two, 3]