Table of Contents for
Nim in Action

Version ebook / Retour

Cover image for bash Cookbook, 2nd Edition Nim in Action by Dominik Picheta Published by Manning Publications, 2017
  1. Cover
  2. Nim in Action
  3. Copyright
  4. Brief Table of Contents
  5. Table of Contents
  6. Preface
  7. Acknowledgments
  8. About this Book
  9. About the Author
  10. About the Cover Illustration
  11. Part 1. The basics of Nim
  12. Chapter 1. Why Nim?
  13. Chapter 2. Getting started
  14. Part 2. Nim in practice
  15. Chapter 3. Writing a chat application
  16. Chapter 4. A tour through the standard library
  17. Chapter 5. Package management
  18. Chapter 6. Parallelism
  19. Chapter 7. Building a Twitter clone
  20. Part 3. Advanced concepts
  21. Chapter 8. Interfacing with other languages
  22. Chapter 9. Metaprogramming
  23. Appendix A. Getting help
  24. Appendix B. Installing Nim
  25. Nim Reference
  26. Index
  27. List of Figures
  28. List of Tables
  29. List of Listings

Nim Reference

Common constructs
const x = 5 Compile-time constant
let y = "Hello" Immutable binding
var z = [1, 2, 3] Mutable variable
proc name(param: int): ReturnType = body
method name(param: float): ReturnType = body
iterator items(list: seq[int]): int = body
template name(param: typed) = body
macro name(param: string): untyped = body
if x > 5:
body
elif y == "Hello":
body
else:
body 		case x
of 5:
body
of 1, 2, 3: body
of 6..30:
body
for item in list:
body 		for i in 0..<len(list):
body
while x == 5:
if y.len > 0:
break
else:
continue 		try:
raise err
except Exception as exc:
echo(exc.msg)
finally: discard

Input/Output
echo(x, 42, "text") readFile("file.txt")
stdout.write("text") writeFile("file.txt", "contents")
stderr.write("error") open("file.txt", fmAppend)
stdin.readLine()  

Type definitions

 
type
  MyType = object
    field: int
 
type
  Colors = enum
    Red, Green,
    Blue, Purple
 
type
  MyRef = ref object
    field*: string

Common infix operations (highest precedence first)
* Multiplication
/ Division (returns float)
div Division (returns integer)
mod Modulus
shl Bit shift left
shr Bit shift right
% String formatting
+ Addition
- Subtraction
& Concatenation
.. Constructs a slice
== <= < >= > != not Boolean comparisons
in notin Determines whether a value is within a container
is isnot Compile-time type equivalence
of Run-time instance of type check
and Bitwise and boolean and operation

Collections
string   seq[T]   Table[T]  
"Hello World"   @[1, 2, 3, 4]   import tables initTable({"K": "V"})  
str.add("Hi")   list.add(21)   table["Key"] = 3.5  
    list.del(2) list.delete(2)   table.del("Key")  
"Hi"[0] 'H' @[1,2][0] 1 table["Key"] 3.5
"Hi"[^1] 'i' @[1,2][^1] 2 "b" in table false
"Hey"[0..1] "He" @[1,2,3][0..1] 1,2    
"Hey"[1..^1] "ey" @[1,2,3][1..^1] 2,3