Inital commit

b3c98ba3dceca661be9785fa795dc0ed101c5c81 · ovidiucs · Jan 29, 2019 10:27
+152 · 1 file changed
tuples.nim +152 −0
diff --git a/tuples.nim b/tuples.nim
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+++ b/tuples.nim
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+import terminal 
+from strutils import repeat
+from strformat import fmt
+
+echo """
+* constructor ()
+* order is important
+
+"""
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Defining tuples anonymously"
+echo """
+
+let
+    PersonA: (string, int) = ("Peter", 30)
+"""
+let
+    PersonA: (string, int) = ("Peter", 30)
+
+echo PersonA
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Defining tuples named fields"
+echo """
+let
+    PersonB: tuple [name:string, age:int] = ("Vinus", 20)
+
+echo PersonB
+"""
+let
+    PersonB: tuple [name:string, age:int] = ("Vinus", 20)
+
+echo PersonB
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Defining custom tuple types"
+echo """
+type
+    Person = tuple[name:string, age:int]
+
+let
+    person1: Person = (name: "Ariel", age: 100)
+    person2: Person = ("Mark", 58)
+
+echo person1
+echo person2
+"""
+type
+    Person = tuple[name:string, age:int]
+
+let
+    person1: Person = (name: "Ariel", age: 100)
+    person2: Person = ("Mark", 58)
+
+echo person1
+echo person2
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Defining custom tuple types - alternative"
+echo """
+type
+    PersonAlt = tuple
+        name: string
+        age:  int
+let
+    person3: PersonAlt = (name: "Darian", age:12)
+    person4: PersonAlt = ("Varian",9)
+
+echo person3
+echo person4
+"""
+type
+    PersonAlt = tuple
+        name: string
+        age:  int
+let
+    person3: PersonAlt = (name: "Darian", age:12)
+    person4: PersonAlt = ("Varian",9)
+
+echo person3
+echo person4
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Accessing tuple fields - anonymous"
+echo """
+let
+    pers:(string,int) = ("Plet", 30)
+
+echo fmt"Tuple person of type {$type(pers)} = {pers}"
+echo pers[0]
+echo pers[1]
+"""
+
+let
+    pers:(string,int) = ("Plet", 30)
+
+echo fmt"Tuple person of type {$type(pers)} = {pers}"
+echo pers[0]
+echo pers[1]
+
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Accessing tuple fields - named tuple"
+echo """
+
+type
+    PersonD = tuple
+        name: string
+        age:  int
+
+let
+    persona: PersonD = ("Mark",33)
+
+echo fmt"Tuple Person of type {$type(persona)} = {persona}"
+echo persona[0]
+echo persona.name
+echo persona[1]
+echo persona.age
+"""
+type
+    PersonD = tuple
+        name: string
+        age:  int
+
+let
+    persona: PersonD = ("Mark",33)
+
+echo fmt"Tuple Person of type {$type(persona)} = {persona}"
+echo persona[0]
+echo persona.name
+echo persona[1]
+echo persona.age
+echo '-'.repeat(40)
+
+styledEcho fgRed, 
+    "Accessing tuple fields - checking fields",
+" compiles. If the argument is a tuple variable with valid field reference, it will return true"
+echo compiles(PersonD.name)
+echo compiles(PersonD.color)
+echo compiles(PersonD.age)
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