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authorJasonJAyalaP <jason@jasonayala.com>2014-09-19 20:14:51 -0500
committerJasonJAyalaP <jason@jasonayala.com>2014-09-19 20:14:51 -0500
commitb87f1acc216ae59ec29c7481008d86de081ffedc (patch)
tree1025a6a831cbe105f5be4809bc0b704cf5d93d68 /nim.html.markdown
parent91e68f583099518b7ab64c323d5f13750eb2b14c (diff)
cleanup
Diffstat (limited to 'nim.html.markdown')
-rw-r--r--nim.html.markdown31
1 files changed, 17 insertions, 14 deletions
diff --git a/nim.html.markdown b/nim.html.markdown
index 929d0a74..eca3aa2d 100644
--- a/nim.html.markdown
+++ b/nim.html.markdown
@@ -12,28 +12,27 @@ efficiency.
Nim is efficient, expressive, and elegant.
```nimrod
-
var # Declare and assign several variables,
letter: char = 'n' # with or without type annotations
- lang = "Nimrod"
+ lang = "N" & "im"
+ n_let : int = len(lang)
boat: float
truth: bool = false
- seconds: int = 42
let # Use let to declare and bind an variable *once*.
legs = 400 # legs is immutable.
arms = 2_000 # _ are ignored and are useful for long numbers.
+ aboutPi = 3.15
const # Constants are computed at compile time. This provides
debug = true # performance and is useful in compile time expressions.
- aboutPi = 3.15
compileBadCode = false
when compileBadCode: # `when` is a compile time `if`
legs = legs + 1 # This error will never be compiled.
- const input = readline(stdin) # const values must be known at compile time.
+ const input = readline(stdin) # Const values must be known at compile time.
-discard 1 > 2 # The compiler will complain if the result of an expression
+discard 1 > 2 # Note: The compiler will complain if the result of an expression
# is unused. `discard` bypasses this.
discard """
@@ -63,7 +62,7 @@ var
drinks = @["Water", "Juice", "Chocolate"] # @[V1,..,Vn] is the sequence literal
#
-# Defining Your Own Types
+# Defining Types
#
# Defining your own types puts the compiler to work for you. It's what makes
@@ -73,13 +72,13 @@ type
Name = string # A type alias gives you a new type that is interchangable
Age = int # with the old type but is more descriptive.
Person = tuple[name: Name, age: Age] # Define data structures too.
- LongTuple = tuple
+ AnotherSyntax = tuple
fieldOne: string
secondField: int
var
- john: Person = ("John B.", 17)
- newage: int = 18 # It would be better to use Age than int
+ john: Person = (name: "John B.", age: 17)
+ newage: int = 18 # It would be better to use Age than int
john.age = newage # But still works because int and Age are synonyms
@@ -166,7 +165,7 @@ of "yes", "Yes":
else:
echo "That's great; I assume."
-# `while`, `if`, `break`
+# `while`, `if`, `continue`, `break`
import strutils as str # http://nimrod-lang.org/strutils.html
echo "I'm thinking of a number between 41 and 43. Guess which!"
@@ -176,6 +175,7 @@ var
guess: int
while guess != number:
raw_guess = readLine(stdin)
+ if raw_guess = "": continue # Skip this iteration
guess = str.parseInt(raw_guess)
if guess == 1001:
echo("AAAAAAGGG!")
@@ -207,8 +207,8 @@ for line in splitLines(myString):
echo(line)
for i, c in myString: # Index and letter. Or `for j in` for just letter
- if i mod 2 == 0: continue # Skip rest of iteration
- elif c == 'X': break # Compact `if` form
+ if i mod 2 == 0: continue # Compact `if` form
+ elif c == 'X': break
else: echo(c)
#
@@ -240,6 +240,10 @@ of aNo:
addSugar()
# No need for an `else` here. Only `yes` and `no` are possible.
+proc pluralize(a: int): string =
+ if a > 1 or a == 0: return "s"
+ else: return ""
+
#
# FFI
#
@@ -249,7 +253,6 @@ of aNo:
proc strcmp(a, b: cstring): cint {.importc: "strcmp", nodecl.}
var cmp = strcmp("C?", "Easy!")
-
```
Additionally, Nim separates itself from its peers with metaprogramming,