updated site + added docs/builtins.md + statements can end with ',' to differentiate '1, -2' from '1 - 2' == '-1'.

site/build.mers

@@ -6,52 +6,52 @@ fn read_string(path string) {
     bytes_to_string(fs_read(path).assume_no_enum()).assume_no_enum()
 }
 fn code_to_html(code string code_width_limit_chars int) {
-    out = ""
+    out := ""
     for line code.regex(".*").assume_no_enum() {
         if code_width_limit_chars.gtoe(0).and(line.len().gt(code_width_limit_chars)) {
-            line = line.substring(0 code_width_limit_chars)
+            &line = line.substring(0 code_width_limit_chars)
         }
-        line = line
+        &line = line
             .replace("&" "&")
             .replace("<" "&lt;")
             .replace(">" "&gt;")
-        out = out.add(line.add("<br>"))
+        &out = out.add(line.add("<br>"))
     }
     out
 }
 
 // data
 
-index = read_string("index.html")
+index := read_string("index.html")
 
-index_html = index.code_to_html(75)
-build_script = read_string("build.mers").code_to_html(-1)
-welcome_script = read_string("welcome.mers").code_to_html(-1)
+index_html := index.code_to_html(75)
+build_script := read_string("build.mers").code_to_html(-1)
+welcome_script := read_string("welcome.mers").code_to_html(-1)
 
 // process index.html
 
-out = ""
+out := ""
 for line index.regex("\\S*.*").assume_no_enum() {
     if line.starts_with("#") {
         // comment, ignore
     } else if line.starts_with("$") {
         if line == "$welcome_script" {
-            out = out + welcome_script
+            &out = out + welcome_script
         } else if line == "$build_script" {
-            out = out + build_script
+            &out = out + build_script
         } else if line == "$index.html" {
-            out = out + index_html
+            &out = out + index_html
         }
     } else {
         // remove spaces
         loop {
             if line.starts_with(" ") {
-                line = line.substring(1)
+                &line = line.substring(1)
             } else {
                 true // break
             }
         }
-        out = out + line + "\n"
+        &out = out + line + "\n"
     }
 }
 fs_write("../index.html" string_to_bytes(out)).assume_no_enum()

site/welcome.mers

@@ -1,8 +1,8 @@
 fn get_number_input(question string) {
     println(question)
-    input = read_line()
+    input := read_line()
     // try to parse to an int, then a float.
-    in = match input {
+    in := match input {
         input.parse_int() input
         input.parse_float() input
     }
@@ -15,7 +15,7 @@ fn get_number_input(question string) {
     // return type is int/float/Err(string)
 }
 
-answer = get_number_input("What is your favorite number?")
+answer := get_number_input("What is your favorite number?")
 
 answer.debug() // type: int/float/Err(string)
 // switch can be used to branch based on a variables type.
@@ -39,9 +39,9 @@ sleep(1)
 // function that returns an anonymous function (function object).
 // anonymous functions can be used as iterators in for-loops.
 fn square_numbers() {
-    i = 0
+    i := 0
     () {
-        i = i + 1
+        &i = i + 1
         i * i
     }
 }