ULTIMATE GUIDE TO #SWIFT BY DSR

#THIS IS THE GUIDE TO SWIFT
# You can always ask for support in the channel #swift
# this is an part of #opspeakcode runned by V1 and dsr(#swift)
#this tutorial has been written by dsr also operator in all the #opspeakcode sub channels
# our channels are  part of #opspeakcode
#java
#python
#swift
#ruby
#optraining also for pentesting and other hacks related
#perl
#javascript

I recommend you add those channels to auto-join we have always some operators that run support per channel
V1 is the owner of all the #opspeakcode chans and DSR is the writer of this Guide and also founder of #swift and operator in all the channels ...


from here on have a good study

************************************************************************************************************************GUIDE STARTS HERE
----INTRO ----


swift combines C and objective-C
So this is a great way to make IOS apps.

!! 1 Text printing !!

text printing is like python and is done by :



print("hello world")

OUTPUT =  hello world


You can also print a value of a variable:

print("the value is \(myvariable)")

If you want nothing else then the value you can type:


print(myvariable)


In python # is our comment
In swift that will be //
multi-line is with /*....*/
example  :

//this is a comment

/* This is a
 MULTI-LINE comment */

To build apps swift needs xcode downloaded here = ...
without this IOS will NOT run your program

----end intro ----
----start section 1 :swift variables----

We can have variables storing data lets take a look here shall we ?

a= 42
|   L 42 is the value
L a is the var

keyword "var" declares a variable

I swift you can re-assign the value of a var:

a = 38

Now even if we say a = 42 its not because we've changed it now , Thats called re-assignment

conclusion :  The variable is ALWAYS re-assignable

-------start section 2 :swift constants ------
 You can declare a constant using the keyword "let"
 usage

 let one = 1

let = constant
one = name
1   = value

So "let" puts a block on changing the variable.

you can declare multiple constants on one line
example

let x=0.0 , y=0.0 , z=0.0

so the conclusion is

Constants are NEVER re-assignable so thats what "let" does.
If you try it will result an error..

note : constants and variables can  contain
 almost ANY character including Unicode chars

------section 3 = TYPE ANNOTATIONS -------
In swift we have the following types
-Int : integers
-double and float : floating-points values
-bool   : boolean
-string   : textual data

you can use those by using "  :  "

example

var welcome text : string
welcometext = "hello"
print(welcometext)


OUTPUT = <value welcometext>

I assume you already know what the effect of
 these types are , If you don't ask in our channel #swift / #opspeakcode
and i will explain , but 80 % knows this so i only spend time for if anyone doesn't know this...

------start basic operations part 1 ------

So we start with 3 operators
1.unary
2.binary
3.ternary

1. unary has 1 target (-a)
2.binary has 2 targets(4+5)
3.ternary has 3 targets( a?b:c )
 YOU WILL UNDERSTAND THESE LATER


section--assignment operator

The assignment operator (a=b)
initializes or updates the value of a with b

example

let b = 7
var a = 42
a=b
print(/a)

OUTPUT = 7

note: b has the   constant so this is not an error because
var is all alone in our code

--section arithmetic operators--

ADDITION            1+2        // equals to 3
SUBTRACTION         6-2        // equals to 4
MULTIPLICATION      4*3        // equals to 12
DIVISION            10.0 / 2.5 // equals to  4.0

The addition operator is also supported for string concatenation
"hello," +"world" // outputs hello,world

--- section remainder operator----

9 % 4

 /* outputs 1
When you do 2*4 its 8
when 9-8 the remainder is one . */

var a = 10
var b = 3
var c = a % (a-b)

what will c be ?

Validate your answer on the irc in channel #swift  to DSR and gain VOP status...
Watch out its just 1 shot that you will have... also no cheating by asking araund on IRC we are in all chans
 we will notice for sure

-----Increment and decrement  ----

var i = 0                   i has been assigned to 1 now
++i                         This also works with --i



var a = 1                   now its been assigned to 3
a += 2


/////////// END OF PART 1 BASIC OPERATORS /////////////

//////////////////////START BASIC OPERATORS PART 2 ///////////////////////////////////////////////////////////////////

Boolean
 // No comments you just have to learn this

1==1     // equal to
2!=1     // not equal to
2>1      // greater then
1<2      // smaller then
1>=1     // greater then or equal to
2<=1     // smaller then or equal to

All of those output 'True'
Try to understand the concept

-----------------------Ternary conditional operators---------------------------------------

Ternary conditional operators

//This is a special oper with 3 parts taking form

question? answer1:answer2

exemple--

gender==0?print("male"):print("female")


// The above , will evaluate the expression gender==0 if its true it prints 'male'
otherwise it prints 'female'

--------------------------------- END OF : Ternary conditional operators -------------------------------
 ---------------------------START OF: Range operators  ------------------------------------------------------

METHOD 1:

1...3

outputs 1,2,3

--------------
METHOD 2 :

1..<3

outputs  1,2

// notice <3 is a hart too , so love swift ;)

----------------End range ops-----------------------------------------

Back on BOOLEAN

//also here i wont say too much its all just practice

NOT : if "true "  its printed "false"
AND : The 2 conditions have to be "true"
OR  : One of the 2 have to be "true"

// The usage of this , opens a SQLi vulnerability , its an important function but
Absolutely dont use this on login forms , search an alternative...
You can use it on php so its reducing its vulns but still its a fact that any login form can be manipulated


------------Optionals

//Used in situations in which  a value may be ABSENT

/* it tells

--theres a value and its equal to x
OR
-- There isnt a value

*/

--exemple--
var mycode : int?=404

------- 2

var mycode : int?=404
mycode = nil

//mycode now contains NO VALUE

var somemsg : string ?

//contains automaticly no value or  nil

////////////////////////////////////////////////////////////END BASICS PART 2 //////////////////////////////
--add link to xcode
//request in channel please