Ruby/C2/Logical-and-other-Operators/Gujarati - Revision history

PoojaMoolya at 04:46, 19 November 2014

2014-11-19T04:46:32Z

Jyotisolanki at 12:00, 5 August 2014

2014-08-05T12:00:14Z

Jyotisolanki at 12:01, 18 July 2014

2014-07-18T12:01:26Z

Show changes

Jyotisolanki at 11:05, 18 July 2014

2014-07-18T11:05:25Z

Jyotisolanki at 10:42, 18 July 2014

2014-07-18T10:42:39Z

Show changes

Jyotisolanki: Created page with ' {| border=1 || '''Time''' || '''Narration''' |- | 00:02 | Welcome to this spoken tutorial on '''Logical & Other Operators. ''' |- | 00:06 | In this tutorial we will learn …'

2014-07-18T08:54:39Z

Created page with ' {| border=1 || '''Time''' || '''Narration''' |- | 00:02 | Welcome to this spoken tutorial on '''Logical & Other Operators. ''' |- | 00:06 | In this tutorial we will learn …'

New page

{| border=1
|| '''Time'''
|| '''Narration'''

|-
| 00:02
| Welcome to this spoken tutorial on '''Logical & Other Operators. '''

|-
| 00:06
| In this tutorial we will learn

|-
| 00:09
| '''Logical Operators '''

|-
| 00:11
|'''Parallel assignment''' and

|-
| 00:13
| '''Range Operators '''

|-
| 00:15
|Here we are using

|-
| 00:17
| '''Ubuntu Linux''' version 12.04

|-
| 00:20
| ''' Ruby 1.9.3 '''

|-
| 00:23
|To follow this tutorial you must know how to use ''' Terminal''' and '''Text editor''' in ''' Linux'''.

|-
| 00:29
|You must also be familiar with '''irb'''

|-
| 00:33
| If not, for relevant tutorials, please visit our website

|-
| 00:38
|Logical Operators are also known as ''' Boolean Operators'''

|-
| 00:42
| because they evaluate parts of an expression

|-
| 00:45
|and return a ''' true''' or ''' false''' value.

|-
| 00:48
|'''Logical Operators''' are,

|-
| 00:51
| ''' double ampersand (&&)''' that is '''(and)'''

|-
| 00:54
| ''' double pipe ''' that is '''(or)'''

|-
| 00:56
|''' Exclamation (!)''' that is '''(not)'''

|-
| 01:00
| '''&&(double ampersand)''' and '''and''' evaluate to '''true''' only if both the expressions are '''true.'''

|-
| 01:07
|Second expression is evaluated only if the first is '''true. '''

|-
| 01:12
| Difference in the two forms is, precedence

|-
| 01:15
|Symbolic '''and''' that is'''&&(double ampersand)''' has higher precedence.

|-
| 01:20
|Let's us see some examples now.

|-
| 01:22
|We will use '''irb''' for this.

|-
| 01:25
| Open the ''' terminal''' by pressing '''Ctrl, Alt and T''' keys simultaneously.

|-
| 01:31
|Type '''irb''' and press '''Enter''' to launch '''interactive Ruby'''

|-
| 01:36
| Type ''' 3 greater than 2 space double ampersand space 4 less than 5'''

|-
| 01:47
| Press ''' Enter'''

|-
| 01:49
| We get the output as '''true.'''

|-
| 01:53
|Here, '''expression1''' that is 3>2 is '''true'''.

|-
| 01:59
|'''Expression 2''' that is 4<5 is also '''true.'''

|-
| 02:03
| Since both the expressions are '''true''', we get output as '''true.'''

|-
| 02:08
|Now press '''Up Arrow''' key to get the previous command.

|-
| 02:12
| And ''' replace the double ampersand''' symbol with the word ''' and.'''

|-
| 02:17
| Press '''Enter '''

|-
| 02:19
|We get the same result.

|-
| 02:22
| Now press up arrow key again to get the previous command.

|-
| 02:27
| In ''' expression 1''' replace '''greater than''' sign with '''less than'''

|-
| 02:32
|Press ''' Enter '''

|-
| 02:35
| We get the output as '''false.'''

|-
| 02:38
|This is because ''' 3<2''' is '''false.'''

|-
| 02:43
| Since the first expression is '''false''', the second expression will not be evaluated.

|-
| 02:49
| So, we get output as '''false.'''

|-
| 02:53
| ''' double pipe''' and '''or''' evaluate to '''true''', if either '''expression''' is '''true.'''

|-
| 02:59
|Second expression is evaluated only if first is '''false.'''

|-
| 03:04
|Difference in the two forms is '''precedence.'''

|-
| 03:07
|Symbolic '''or''' i.e ''' double pipe''' has higher '''precedence.'''

|-
| 03:11
| Now, let's try some examples.

|-
| 03:15
|''' 10 greater than 6 space double pipe space 12 less than 7'''

|-
| 03:23
| Press '''Enter.'''

|-
| 03:26
|We get output as '''true.'''

|-
| 03:29
|Here '''expression 1''' that is '''10>6''' is '''true'''.

|-
| 03:35
| Since the first expression is '''true''' , second expression will not be evaluated.

|-
| 03:40
|So, we get the output as '''true. '''

|-
| 03:42
| Now press the '''Up Arrow''' key to get the previous command.

|-
| 03:46
| In '''expression 1''' replace '''greater than sign''' with '''less than sign.'''

|-
| 03:52
| And replace '''pipe''' symbol with the word '''or.'''

|-
| 03:57
| Press '''Enter.'''

|-
| 04:00
|Here, '''expression1''' that is 10<6 is '''false. '''

|-
| 04:05
| '''Expression 2''' that is 12<7 is also '''false. '''

|-
| 04:10
| Since both the expressions are '''false''', we get output as '''false. '''

|-
| 04:15
|'''! (exclamation mark )''' and '''not''' operators return the opposite value of the expression

|-
| 04:20
| If the '''expression''' is '''true''', '''exclamation mark''' operator will return a '''false''' value.

|-
| 04:27
|It will return '''true''' if the expression is '''false'''.

|-
| 04:30
| Difference in the two forms is '''precedence. '''

|-
| 04:33
| Symbolic '''not that is (!)''' has higher '''precedence.'''

|-
| 04:37
| Let's try out the '''not''' operator.

|-
| 04:40
|First type ''' 10 double equal to 10'''

|-
| 04:45
| Press '''Enter '''

|-
| 04:47
|We get the output as '''true.'''

|-
| 04:50
|To invert the result of above expression,

|-
| 04:53
| let's add the '''not''' operator before the expression.

|-
| 04:57
|Type '''Exclamation mark within brackets 10 double equal to 10 '''

|-
| 05:04
| Press '''Enter. '''

|-
| 05:06
|We get the output as '''false.'''

|-
| 05:10
| Press '''Ctrl+L''' simultaneously to clear the '''irb''' console.

|-
| 05:15
|Next, let us learn about '''parallel assignment. '''

|-
| 05:20
|Multiple variables can be initialized with a single line of '''Ruby''' code, through '''parallel assignment. '''

|-
| 05:26
| Let's switch to the '''terminal.'''

|-
| 05:29
|Let's declare three variables '''a, b, c''' using '''parallel assignment. '''

|-
| 05:36
| Type '''a comma b comma c equal to 10 comma 20 comma 30 '''

|-
| 05:45
| and press '''Enter. '''

|-
| 05:47
|Here, '''10''' will be assigned to variable '''a '''

|-
| 05:52
|'''20''' will be assigned to variable '''b '''

|-
| 05:54
|'''30''' will be assigned to variable '''c '''

|-
| 05:56
|The right hand side acts as an '''array'''.

|-
| 06:01
|If we list multiple variables on the left hand side, then the array is unpacked and assigned into the respective variables.

|-
| 06:10
|We will learn about '''arrays''' in detail in the upcoming tutorials.

|-
| 06:14
| For now, let's check whether the '''assignment''' is done properly.

|-
|06:20
| Type '''a''' and press '''Enter.'''

|-
| 06:23
|Value '''10''' stored in variable '''a''' is displayed.

|-
| 06:28
|Type '''b''' and press '''Enter.'''

|-
| 06:31
|We get 20

|-
| 06:33
| Type '''c''' and press '''Enter.'''

|-
| 06:37
|30 is displayed.

|-
| 06:40
| '''Parallel assignment''' is also useful for swapping the values stored in two variables.
|-
| 06:45
|Let us swap the values of variables a and b.

|-
| 06:50
|Type '''puts space within double quotes a equal to hash within curly brackets a comma within double quotes b equal to hash within curly brackets b'''

|-
| 07:11
| Press '''Enter. '''

|-
| 07:13
| We get the output as '''a=10 '''

|-
| 07:16
|'''b=20 '''

|-
| 07:20
|Now let's swap a and b.

|-
| 07:23
|To do so type

|-
| 07:25
|'''a comma b equal to b comma a '''

|-
| 07:31
|Press '''Enter.'''

|-
| 07:33
| Press '''Up Arrow''' key twice to get the '''puts''' command and press '''Enter.'''

|-
| 07:39
| We get the output as

|-
| 07:41
|'''a=20 '''

|-
| 07:44
| '''b=10 '''

|-
| 07:47
| We will now learn about '''range''' in '''Ruby.'''

|-
| 07:50
|The values in a '''range''' can be numbers, characters, strings or objects.

|-
| 07:58
|'''Ranges''' are used to express a '''sequence. '''

|-
| 08:02
|'''Sequence range''' is used to create a range of successive values.

|-
| 08:06
|It consists of a start value, range of values and an end value.

|-
| 08:13
|'''(..) two dot operator''' creates ''' inclusive range. '''

|-
| 08:16
|'''(...) three dot operator''' creates an '''exclusive range. '''

|-
| 08:20
|'''Ranges''' are used to identify whether a value falls within a particular range, too.

|-
| 08:26
|We do this using (===) the '''equality''' operator.

|-
| 08:30
|Let us try out some examples on '''ranges.'''

|-
| 08:33
|Let's switch to '''terminal. '''

|-
| 08:36
|Type '''Within brackets 1 two dots 10 then dot to underscore a '''

|-
| 08:46
|'''Two dot''' operator creates '''inclusive range. '''

|-
| 08:50
|'''Inclusive operator''' includes both begin and end values in a range.

|-
| 08:57
|Here '''to_a''' method is used to convert a '''range''' to a list.

|-
| 09:03
|Press '''Enter. '''

|-
| 09:05
|Here you can see the values 1 and 10 are included in the range.

|-
| 09:11
|Now we will see an '''exclusive range''' operator.

|-
| 09:16
|Type '''Within brackets 1 three dots 10 then dot to underscore a '''

|-
| 09:27
|'''Three dot''' operator creates an '''exclusive range. '''

|-
| 09:31
|'''Exclusive range''' operator excludes the end value from the sequence.

|-
| 09:37
|Press '''Enter. '''

|-
| 09:39
|Here the end value 10 is not included in the range.

|-
| 09:45
|Now let's check whether 5 lies in the range of 1 to 10.

|-
| 09:50
|Type '''Within brackets 1 two dots 10 three times equal to and then 5 '''

|-
| 10:00
|Press '''Enter. '''

|-
| 10:02
|'''Equality operator''' is used to check whether a value lies in the range.

|-
| 10:07
|We get the output as '''true''' since 5 lies in the range 1 to 10.

|-
| 10:14
|This brings us to the end of this Spoken Tutorial.

|-
| 10:17
|In this tutorial, we have learnt

|-
| 10:20
|'''Logical operator''' i.e ''' double ampersand, double pipe and exclamation mark operators '''

|-
| 10:27
|'''Parallel assignment''' Ex: a,b,c=10,20,30

|-
| 10:34
|'''Range Operator Inclusive operator '''(..) and Exclusive operator(...)'''

|-
| 10:39
|As an assignment

|-
| 10:41
|Declare two variables using '''parallel assignment''' and

|-
| 10:45
|Check whether their sum lies between 20 and 50

|-
| 10:49
| Watch the video available at the following link.

|-
| 10:52
|It summarises the Spoken Tutorial project.

|-
| 10:56
|If you do not have good bandwidth, you can download and watch it.

|-
| 11:00
| The Spoken Tutorial Project Team :

|-
| 11:03
|Conducts workshops using spoken tutorials

|-
|11:05
|Gives certificates to those who pass an online test

|-
| 11:09
|For more details, please write to contact@spoken-tutorial.org

|-
| 11:15
| Spoken Tutorial Project is a part of the Talk to a Teacher project.

|-
| 11:19
|It is supported by the National Mission on Education through ICT, MHRD, Government of India.

|-
| 11:25
|More information on this Mission is available at spoken hyphen tutorial dot org slash NMEICT hyphen Intro

|-
| 11:34
|This script has been contributed by the spoken tutorial team IIT Bombay

|-
| 11:38
|And this is Shalini Nair signing off Thank you

|}

@@ Line 45: / Line 45: @@
 |તમે  '''irb'''  સાથે પણ પરિચિત હોવા જોઈએ.
 |-
 |  00:33
 | જો નથી, તો સંબંધિત ટ્યુટોરિયલ્સ માટે, અમારી વેબસાઇટ જુઓ.
 |-
@@ Line 116: / Line 113: @@
 |  01:36
 | ટાઈપ કરો  ''' 3 greater than 2 space double ampersand space 4 less than 5'''
 |-
@@ Line 137: / Line 133: @@
 |  02:03
 | જ્યાર શુધી બંને  '''expressions''''''true''', હોય આપણને આઉટપુટ '''true.'''  મળે છે.
 |-
@@ Line 159: / Line 154: @@
 |  02:22
 | હવે પહેલાના કમાંડ મેળવવા માટે   '''Up Arrow''' કી દબાઓ.
 |-
 |  02:27
 |  ''' expression 1''' મા  '''greater than''' ચિન્હ ને  '''less than''' થી બદલો.
 |-
@@ Line 193: / Line 186: @@
 | 02:59
 |ત્યારે    પ્રથમ  '''false.'''  હોય તો જ બીજું  '''expression''' નું મૂલ્યાંકન થાય.
 |-
@@ Line 230: / Line 222: @@
 | 03:40
 |તો , આપણને આઉટપુટ '''true.''' મળે છે .
 |-
 |  03:42
 |   હવે પહેલાના કમાંડ મેળવવા માટે   '''Up Arrow''' કી દબાઓ.
 |-
@@ Line 297: / Line 286: @@
 | 04:47
 |આપણને આઉટપુટ '''true.''' મળે છે .
 |-
@@ Line 306: / Line 294: @@
 |  04:53
 |   ચાલો એક્સપ્રેશન ના પહેલા '''not''' ઓપરેટર  ઉમેરો.
 |-
 | 04:57
 |ટાઈપ કરો '''Exclamation mark within brackets 10 double equal to 10 '''
 |-
 |  05:04
 |  '''Enter. ''' દબાઓ.
 |-
@@ Line 362: / Line 347: @@
 |'''30''' એ  વેરીએબલ  '''c ''' ને અસાઇન કરવામા આવશે.
 |-
 | 05:56
@@ Line 391: / Line 374: @@
 | 06:28
 |ટાઈપ કરો  '''b''' અને  '''Enter.''' દબાઓ.
 |-
@@ Line 404: / Line 386: @@
 | 06:37
 |'''30''' દ્રશ્યમાન થાય છે.
 |-
@@ Line 461: / Line 442: @@
 | 07:44
 | '''b=10 '''
 |-
@@ Line 510: / Line 490: @@
 | 08:36
 |ટાઈપ કરો  '''Within brackets 1 two dot 10 then dot to underscore a '''
 |-
@@ Line 555: / Line 534: @@
 | 09:39
 | અહી અંતની વેલ્યુ '''10''' શ્રેણીમા સમાવિષ્ઠ થયી નથી.
 |-
@@ Line 564: / Line 542: @@
 | 09:50
 |ટાઈપ કરો '''Within brackets 1 two dots 10 three times equal to and પછી 5 '''
 |-
@@ Line 585: / Line 562: @@
 | 10:17
 |આ ટ્યુટોરીયલમાં, આપણે શીખ્યા છે
 |-
@@ Line 610: / Line 586: @@
 | 10:45
 | અને તેનો સરવાળો '''20 અને  50''' વચ્ચે આવે છે કે નહી તે તપાસો.
 |-
@@ Line 655: / Line 630: @@
 | 11:34
 |આઈઆઈટી બોમ્બે તરફથી હું, જ્યોતી સોલંકી વિદાય લઉં છું.
 |-

@@ Line 19: / Line 19: @@
 |-
 | 00:11
-|'''Parallel assignment''' અને  (પેરેલલ અસાઈમેંટ)
+|'''Parallel assignment''' અને  (પેરેલલ અસાઈમેંટ)અને
 |-
@@ Line 39: / Line 39: @@
 |-
 | 00:23
-|આ ટ્યુટોરીયલના અનુસરણ માટે તમને ''' Linux''' મા ''' Terminal''' અને  '''Text editor''' નું જ્ઞાન હોવું જ જોઈએ.
+|આ ટ્યુટોરીયલના અનુસરણ માટે તમને ''' Linux''' મા ''' Terminal''' અને  '''Text editor'''  જ્ઞાન હોવું જ જોઈએ.
 |-
 | 00:29
-|You must also be familiar with '''irb'''
+|તમે  '''irb'''  સાથે પણ પરિચિત હોવા જોઈએ.
@@ Line 102: / Line 102: @@
 |-
 | 01:22
-|આપને આ માટે  '''irb''' જોશું.
+|આપણે  આ માટે  '''irb''' જોશું.
@@ Line 124: / Line 124: @@
 |-
 |  01:49
-| આપણને આઉટપુટ '''true.''' મળેશે.
+| આપણને આઉટપુટ '''true.''' મળે છે.
 |-
@@ Line 192: / Line 192: @@
 |-
 | 02:59
-|ત્યારે   is evaluated only if first ઇસ પ્રથમ  '''false.'''  હોય તો જ બીજું  '''expression''' નું મૂલ્યાંકન થાય.
+|ત્યારે    પ્રથમ  '''false.'''  હોય તો જ બીજું  '''expression''' નું મૂલ્યાંકન થાય.
@@ Line 357: / Line 357: @@
 | 05:52
 |'''20''' એ  વેરીએબલ  '''b ''' ને અને
 |-
 | 05:54
@@ Line 464: / Line 465: @@
 |-
 | 07:47
-| '''Ruby.''' મા આપને હવે '''range''' વિષે શીખીશું.
+| '''Ruby.''' મા આપણે હવે '''range''' વિષે શીખીશું.
 |-
 | 07:50
-|The values in a '''range''' મા વેલ્યુ એ નંબરસ , કેરેક્ટ્સ , સ્ટ્રિંગ્સ અથવા ઓબ્જેક્ટો હોય શકે છે  .
+| '''range''' મા વેલ્યુ એ નંબરસ , કેરેક્ટ્સ , સ્ટ્રિંગ્સ અથવા ઓબ્જેક્ટો હોય શકે છે  .
 |-
@@ Line 480: / Line 481: @@
 |-
 | 08:06
-|  શરુઆતી વેલ્યુ,રેંજની વેલ્યુ,અને  અંતની વેલ્યુ તે સમાવે છે
+|  શરુઆતી વેલ્યુ,રેંજની વેલ્યુ,અને  અંતની વેલ્યુ ને  સમાવે છે
 |-
@@ Line 508: / Line 509: @@
 |-
 | 08:36
-|ટાઈપ કરો  '''Within brackets 1 two dots 10 then dot to underscore a '''
+|ટાઈપ કરો  '''Within brackets 1 two dot 10 then dot to underscore a '''
@@ Line 537: / Line 538: @@
 |-
 | 09:16
-|ટાઈપ કરો  '''Within brackets 1 three dots 10 then dot to underscore a '''
+|ટાઈપ કરો  '''Within brackets 1 three dots 10 પછી  dot to underscore a '''
 |-
@@ Line 562: / Line 563: @@
 |-
 | 09:50
-|ટાઈપ કરો '''Within brackets 1 two dots 10 three times equal to and then 5 '''
+|ટાઈપ કરો '''Within brackets 1 two dots 10 three times equal to and પછી 5 '''

@@ Line 385: / Line 385: @@
 |-
 | 06:23
-|Value '''10''' stored in variable '''a''' is displayed.
+|વેલ્યુ  '''10''' એ  વેરીએબલ '''a'''  મા સંગ્રહિત છે તેવું દ્રશ્યમાન થાય છે.
 |-
 | 06:28
-|Type '''b''' and press '''Enter.'''
+|ટાઈપ કરો  '''b''' અને  '''Enter.''' દબાઓ.
 |-
 | 06:31
-|We get 20
+|આપણને  '''20''' મળે છે.
 |-
 |  06:33
-| Type '''c''' and press '''Enter.'''
+| ટાઈપ કરો '''c''' અને  '''Enter.''' દબાઓ.
 |-
 | 06:37
-|30 is displayed.
+|'''30''' દ્રશ્યમાન થાય છે.
 |-
 |  06:40
-|  '''Parallel assignment''' is also useful for swapping the values stored in two variables.
+|  બે વેરીએબલો ની વેલ્યુ ને અદલાબદલી માટે પણ '''Parallel assignment'''  ઉપયોગી છે.
 |-
 | 06:45
-|Let us swap the values of variables a and b.
+|  ચાલો વેરીએબલ '''a અને  b''' ની વેલ્યુને અદલાબદલી કરીએ.
 |-
 | 06:50
-|Type '''puts space within double quotes a equal to hash within curly brackets a comma within double quotes b equal to hash within curly brackets b'''
+|ટાઈપ કરો  '''puts space બે અવતરણચિહ્નો અંદર  a equal to hash છગડીયા કૌંસ અંદર  a comma બે અવતરણચિહ્નો અંદર b equal to hash છગડીયા કૌંસ અંદર   b'''
 |-
 | 07:11
-| Press '''Enter. '''
+|  '''Enter. ''' દબાઓ.
 |-
 | 07:13
-| We get the output as '''a=10 '''
+|   આપણને આઉટપુટ '''a=10 '''  મળે છે
 |-
@@ Line 429: / Line 431: @@
 |-
 | 07:20
-|Now let's swap a and b.
+| હવે ચાલો  '''a અને  b.''' અદલાબદલી કરીએ.
 |-
 | 07:23
-|To do so type
+|આ કરવા માટે ટાઈપ કરો.
 |-
@@ Line 441: / Line 443: @@
 |-
 | 07:31
-|Press '''Enter.'''
+| '''Enter.'''  દબાઓ.
 |-
 | 07:33
-| Press '''Up Arrow''' key twice to get the '''puts''' command and press '''Enter.'''
+|  '''puts''' કમાંડ ને મેળવવા માટે '''Up Arrow''' કીને બે વાર દબાઓ  અને  '''Enter.''' દબાઓ.
 |-
 |  07:39
-|  We get the output as
+|  આપણને આઉટપુટ મળે છે.
 |-
@@ Line 462: / Line 464: @@
 |-
 | 07:47
-| We will now learn about '''range''' in '''Ruby.'''
+| '''Ruby.''' મા આપને હવે '''range''' વિષે શીખીશું.
 |-
 | 07:50
-|The values in a '''range''' can be numbers, characters, strings or objects.
+|The values in a '''range''' મા વેલ્યુ એ નંબરસ , કેરેક્ટ્સ , સ્ટ્રિંગ્સ અથવા ઓબ્જેક્ટો હોય શકે છે  .
 |-