YAPC::EU 2018 Glasgow Update!

Task/Inverted-syntax/Factor/inverted-syntax-2.factor

@@ -1,4 +1,3 @@
-USE: infix
-[infix
-    5*(1+1) ! 10
-infix]
+MACRO: pre ( quot -- quot ) reverse ;
+
+[ + 2 2 ] pre ! 4

Task/Inverted-syntax/Factor/inverted-syntax-3.factor

@@ -0,0 +1 @@
+[ + 3 + 2 2 ] pre ! 7

Task/Inverted-syntax/Factor/inverted-syntax-4.factor

@@ -0,0 +1,3 @@
+MACRO: pre ( quot -- quot ) 1 cut swap [ 0 ] dip reduce 1quotation ;
+
+[ + 1 2 3 4 5 ] pre ! 15

Task/Inverted-syntax/Factor/inverted-syntax-5.factor

@@ -0,0 +1,4 @@
+USE: infix
+[infix
+    5*(1+1) ! 10
+infix]

Task/Inverted-syntax/Go/inverted-syntax.go

@@ -0,0 +1,30 @@
+package main
+
+import "fmt"
+
+type ibool bool
+
+const itrue ibool = true
+
+func (ib ibool) iif(cond bool) bool {
+    if cond {
+        return bool(ib)
+    }
+    return bool(!ib)
+}
+
+func main() {
+    var needUmbrella bool
+    raining := true
+
+    // normal syntax
+    if raining {
+        needUmbrella = true
+    }
+    fmt.Printf("Is it raining? %t. Do I need an umbrella? %t\n", raining, needUmbrella)
+
+    // inverted syntax
+    raining = false
+    needUmbrella = itrue.iif(raining)
+    fmt.Printf("Is it raining? %t. Do I need an umbrella? %t\n", raining, needUmbrella)
+}

Task/Inverted-syntax/TI-83-BASIC/inverted-syntax.ti-83

@@ -0,0 +1 @@
+536→N