modernize example to Nim 2.0.4

coroexample.nim

@@ -50,13 +50,15 @@ proc main =
           break
         else:
           echo "Now contention of writing"
-        let sleeping = 300.random
+        let sleeping = rand 300
         suspend()
         sleepTotal += sleeping
         sleep sleeping
     )
   let startTime = cpuTime()
   run()
+  producer.wait()
+  consumer.wait()
   echo "The cpuTime needed is ", cpuTime() - startTime, " with sleeping ",
     sleepTotal, " ms."
 

enumerate_datestr.nim

@@ -2,7 +2,7 @@
 # Initial problem was asked in the forum https://forum.nim-lang.org/t/3005
 # and this is the result of solution.
 
-import times, strformat
+import std/[times, strformat]
 
 template iterdays(ds1, ds2: string, op: untyped): untyped =
   var
@@ -12,10 +12,10 @@ template iterdays(ds1, ds2: string, op: untyped): untyped =
   var interval: TimeInterval
   # yield day-by-day
   if d1.monthday != d2.monthday:
-    interval = initInterval(hours=24)
+    interval = initTimeInterval(hours=24)
   # yield month-by-month
   else:
-    interval = initInterval(months=1)
+    interval = initTimeInterval(months=1)
 
   while `op`(d1.toTime, d2.toTime):
     yield d1

front-end-karax/server.nim

@@ -14,10 +14,9 @@ var
   logins = newTable[string, bool]()
   counts = 0
   #menu = @["profil", "statistics", "information"]
-  menu = [("profile", "#/profile"),
-    ("statistics", "#/statistics"),
-    ("information", "#/information")].mapIt(
-      Menu(label: it[0], href: it[1]))
+  menu = ["profile", "statistics", "information"].mapIt(
+      Menu(label: it, href: &"#/{it}")
+  )
 
 routes:
   get "/managing":