PERL/C2/Blocks-in-Perl/Gujarati - Revision history

PoojaMoolya at 12:34, 28 February 2017

2017-02-28T12:34:48Z

PoojaMoolya at 12:34, 28 February 2017

2017-02-28T12:34:00Z

Jyotisolanki at 11:34, 20 November 2014

2014-11-20T11:34:05Z

Jyotisolanki at 11:21, 18 November 2014

2014-11-18T11:21:17Z

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Jyotisolanki at 11:29, 17 October 2014

2014-10-17T11:29:25Z

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Jyotisolanki at 09:28, 17 October 2014

2014-10-17T09:28:53Z

Jyotisolanki at 07:36, 17 October 2014

2014-10-17T07:36:30Z

Jyotisolanki: Created page with "{| border=1 |'''Time''' |'''Narration''' |- | 00:01 |Welcome to the spoken tutorial on ''' BLOCKS''' in Perl. |- | 00:06 | In this tutorial, we will learn about the variou..."

2014-10-17T06:35:09Z

Created page with "{| border=1 |'''Time''' |'''Narration''' |- | 00:01 |Welcome to the spoken tutorial on ''' BLOCKS''' in Perl. |- | 00:06 | In this tutorial, we will learn about the variou..."

New page

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

|-
| 00:01
|Welcome to the spoken tutorial on ''' BLOCKS''' in Perl.

|-
| 00:06
| In this tutorial, we will learn about the various ''' BLOCKS''' available in '''Perl'''

|-
|00:13
|I am using ''' Ubuntu Linux 12.04''' operating system and ''' Perl 5.14.2'''

|-
|00:21
| I will also be using the ''' gedit''' Text Editor.

|-
|00:26
|You can use any text editor of your choice.

|-
|00:31
|As a pre-requisite, you should have basic knowledge of '''Variables, Comments''' in ''' Perl '''

|-
| 00:38
| Knowledge of ''' Data structures''' in '''PERL''' will be an added advantage.

|-
| 00:44
|Please go through the relevant spoken tutorials on the ''' spoken tutorial ''' website.

|-
| 00:50
|''' Perl''' provides 5 special '''blocks.'''

|-
|00:53
|These '''blocks''' get executed at various stages of a '''Perl''' program.

|-
|00:59
|These blocks are:

|-
| 01:01
| '''BEGIN'''

|-
|01:02
|'''END'''

|-
|01:03
|''' UNITCHECK'''

|-
| 01:04
| ''' CHECK. '''

|-
|01:05
|''' INIT '''

|-
|01:06
| Let us start with understanding the ''' BEGIN''' block.

|-
|01:10
|''' BEGIN''' block get executed at the time of compilation.

|-
|01:15
|So, any code written inside this block gets executed first during compilation.

|-
|01:22
|We can have several ''' BEGIN ''' blocks inside a ''' Perl''' script.

|-
|01:26
| These blocks will get executed in the order of declaration.

|-
| 01:31
|That is in the ''' First define First execute ''' pattern

|-
|01:35
|The syntax for ''' BEGIN block''' is as follows

|-
|01:40
| '''BEGIN''' in capital letters space open curly bracket

|-
| 01:45
| Press ''' Enter.'''

|-
|01:47
|Piece of code to be executed at the time of compilation

|-
|01:51
| Press '''Enter '''

|-
|01:52
|Close curly bracket

|-
|01:55
|Now, let us look at an example of '''BEGIN''' blocks.

|-
|01:59
|Open the Terminal and type

|-
|02:02
| ''' gedit beginBlock dot pl ''' space '''ampersand'''

|-
|02:08
|and press '''Enter.'''

|-
|02:10
|This will open the ''' beginBlock dot pl ''' file in '''gedit. '''

|-
|02:15
|Type the following piece of code as displayed on the screen.

|-
|02:20
|Let us look at what I have written inside the script.

|-
|02:24
|Here, we have printed some text before and after ''' BEGIN''' blocks.

|-
| 02:31
| Similarly, I have written one ''' print statement''' in each '''BEGIN''' block.

|-
| 02:37
|Please note, I have not given the semicolon after the ''' BEGIN''' blocks.

|-
| 02:42
|Putting a semicolon, will result in a syntax error, on execution of the program.

|-
|02:49
|Now, press ''' Ctrl+s''' to save the file.

|-
| 02:53
| Then switch to terminal and execute the script by typing,

|-
| 02:58
|''' perl beginBlock dot pl'''

|-
|03:01
|and press '''Enter.'''

|-
|03:04
|You will get the output as displayed on the terminal.

|-
| 03:09
| Notice that The line written inside the first '''BEGIN''' block gets printed first and

|-
|03:16
| The first '''print statement''' in the script actually gets printed after the '''BEGIN block statements. '''

|-
| 03:25
| '''BEGIN blocks''' gets executed in the order of their declaration.

|-
| 03:31
| From this example, it is evident that:

|-
| 03:34
|The code written inside the ''' BEGIN''' blocks gets executed first.

|-
| 03:40
| This is irrespective of the location of the ''' BEGIN''' block inside ''' PERL''' script.

|-
| 03:46
| '''BEGIN blocks''' always get executed in the '''First In First Out''' manner.

|-
|03:52
|So one of the use of this '''block''' is to include files inside a Perl script, before actual execution starts.

|-
|04:01
|Now, let us understand the '''END block '''

|-
|04:04
|''' END block''' get executed at the end of PERL program

|-
|04:09
|Code written inside this block gets executed after PERL has finished executing the program.

|-
|04:17
|We can have several ''' END blocks''' inside a '''Perl script.'''

|-
|04:21
|These blocks will get executed in reverse order of declaration

|-
| 04:26
| That is, in '''Last define First execute''' pattern.

|-
|04:30
|The syntax for ''' END block''' is as follows

|-
|04:35
|''' END ''' in capital letters open curly bracket

|-
|04:39
|Press ''' Enter'''

|-
|04:40
|Piece of code to be executed at the end of the ''' PERL ''' script

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

|-
|04:46
|Close curly bracket

|-
|04:49
|Now let us look at an example of END blocks.

|-
|04:53
|Open the Terminal and type

|-
| 04:56
|''' gedit endBlock dot pl space ampersand'''

|-
| 05:00
|and press '''Enter'''

|-
|05:03
| This will open the ''' endBlock dot pl''' file in '''gedit.'''

|-
| 05:08
| Type the following piece of code as displayed on the screen.

|-
| 05:13
| Let us look at what I have written inside this script.

|-
| 05:17
| Here we have printed some text before and after ''' END''' blocks.

|-
| 05:23
|Similarly, we have written one print statement in each ''' END''' block.

|-
| 05:29
| Please note, I have not given the ''' semicolon''' after the '''END''' block.

|-
|05:34
|If we give the semicolon, there will be a syntax error on compilation.

|-
| 05:41
| Now, press ''' Ctrl+s''' to save the file.

|-
| 05:45
| Then switch to terminal and execute the script by typing,

|-
|05:50
|''' perl endBlock dot pl'''

|-
| 05:53
|and '''press Enter.'''

|-
|05:55
| You will get the output as displayed on the terminal.

|-
|06:00
| Notice that : The line written inside the ''' END''' block is printed last.

|-
| 06:06
| The last ''' print statement''' in the script actually gets printed before the '''END block statements and

|-
| 06:13
| ''' END''' blocks gets executed in the reverse order of their declaration.

|-
| 06:20
| From the example, it is evident that

|-
| 06:23
|The code written inside the ''' END''' blocks get executed at the end.

|-
|06:29
| This is irrespective of the location of the ''' END''' block inside the '''PERL''' script and

|-
|06:36
|'''END''' blocks gets executed in the ''' Last In First Out''' manner.

|-
|06:41
|So, one use of '''END''' block is to destroy objects created in the program, before exiting.

|-
|06:49
| Similarly, ''' PERL''' has ''' UNITCHECK, CHECK''' and ''' INIT''' blocks.

|-
|06:55
|These blocks are used rarely by developers and are a bit difficult to understand.

|-
|07:02
| So, I will be just briefing you about these blocks.

|-
|07:06
|''' UNITCHECK, CHECK''' and '''INIT''' blocks are useful-

|-
|07:10
|to catch the transition between compilation and execution phase of the main program and

|-
|07:18
|to perform some checks or initialisation, after compilation and before execution

|-
|07:24
|''' UNITCHECK''' and '''CHECK''' blocks runs in '''Last in First out''' manner

|-
|07:31
|whereas '''INIT''' block runs in '''First In First Out''' manner.

|-
|07:37
|The syntax for '''UNITCHECK''' block is as follows

|-
|07:41
|''' UNITCHECK''' in capital letters space open curly bracket

|-
|07:46
|Press '''Enter'''

|-
|07:48
|Piece of code to be executed

|-
|07:50
|Press '''Enter'''

|-
|07:52
|Close curly bracket

|-
|07:54
|The syntax for '''CHECK''' block is as follows

|-
|07:58
|'''CHECK''' in capital letters space open curly bracket

|-
|08:03
|Press '''Enter'''

|-
|08:04
|Piece of code to be executed

|-
|08:07
|Press '''Enter '''

|-
|08:08
|Close curly bracket

|-
|08:11
|The syntax for '''INIT''' block is as follows

|-
|08:15
|''' INIT''' in capital letters space open curly bracket

|-
|08:20
|Press '''Enter '''

|-
|08:21
|Piece of code to be initialised

|-
|08:24
|Press '''Enter '''

|-
|08:26
|Close curly bracket

|-
|08:28
|For better understanding, I recommend that you experiment with these blocks in your '''Perl''' scripts.

|-
|08:36
|Let us summarize.

|-
|08:37
|In this tutorial, we have learnt -

|-
|08:40
|''' BEGIN''' and '''END''' blocks in detail and

|-
|08:44
|Introduction to ''' UNITCHECK, CHECK''' and '''INIT ''' blocks

|-
|08:48
|using sample programs

|-
|08:52
|Here is assignment for you -

|-
|08:54
|Type the below code inside a PERL script;

|-
|08:58
|Execute the script and observe the output.

|-
|09:02
|Watch the video available at the following link

|-
|09:06
|It summaries the Spoken Tutorial project

|-
|09:09
|If you do not have good bandwidth, you can download and watch it

|-
| 09:14
| The Spoken Tutorial Project Team Conducts workshops using spoken tutorials

|-
|09:20
|Gives certificates to those who pass an online test

|-
|09:24
|For more details, please write to contact at spoken hyphen tutorial dot org

|-
| 09:32
| Spoken Tutorial Project is a part of the Talk to a Teacher project

|-
|09:37
|It is supported by the National Mission on Education through ICT, MHRD, Government of India.

|-
|09:45
|More information on this Mission is available at spoken hyphen tutorial dot org slash NMEICT hyphen Intro

|-
| 09:57
| Hope you enjoyed this Perl tutorial.

|-
|10:00
|This is Amol signing off.

|-
|10:02
|Thanks for joining.

|}

@@ Line 437: / Line 437: @@
 |-
 | 08:36
-| ચાલો સારાંશ લઈએ.
+| ચાલો સારાંશ લઈએ. આ ટ્યુટોરીયલમાં આપણે આપેલ શીખ્યા -
-−
-|-
-| 08:37
-| આ ટ્યુટોરીયલમાં આપણે આપેલ શીખ્યા -
 |-

@@ Line 49: / Line 49: @@
 |-
 | 01:01
-| '''BEGIN''' (બીગીન)
+| '''BEGIN''' (બીગીન), '''END''' (એન્ડ)
-−
-|-
-| 01:02
-| '''END''' (એન્ડ)
 |-
 | 01:03
-| '''UNITCHECK''' (યુનિટચેક)
+| '''UNITCHECK''' (યુનિટચેક), '''CHECK''' (ચેક)
-−
-|-
-| 01:04
-| '''CHECK''' (ચેક)
 |-
 | 01:05
-| '''INIT''' (આઈનીટ)
+| '''INIT''' (આઈનીટ),  ચાલો '''BEGIN''' બ્લોકને સમજવાથી શરૂઆત કરીએ.
-−
-|-
-| 01:06
-| ચાલો '''BEGIN''' બ્લોકને સમજવાથી શરૂઆત કરીએ.
 |-
@@ Line 109: / Line 97: @@
 |-
 | 01:51
-| '''Enter''' દબાવો.
+| '''Enter''' દબાવો. છગડીયો કૌંસ બંધ
-−
-|-
-| 01:52
-| છગડીયો કૌંસ બંધ
 |-
@@ Line 245: / Line 229: @@
 |-
 | 04:39
-| '''Enter''' દબાવો.
+| '''Enter''' દબાવો.  પર્લ સ્ક્રીપ્ટની અંતમાં એક્ઝીક્યુટ કરવા માટે જોઈતો કોડ
-−
-|-
-| 04:40
-| પર્લ સ્ક્રીપ્ટની અંતમાં એક્ઝીક્યુટ કરવા માટે જોઈતો કોડ
 |-
 | 04:45
-| '''Enter''' દબાવો.
+| '''Enter''' દબાવો.  બંધ છગડીયો કૌંસ
-−
-|-
-| 04:46
-| બંધ છગડીયો કૌંસ
 |-
@@ Line 429: / Line 405: @@
 |-
 | 08:07
-| '''Enter''' દબાવો.
+| '''Enter''' દબાવો. બંધ છગડીયો કૌંસ
-−
-|-
-| 08:08
-| બંધ છગડીયો કૌંસ
 |-

@@ Line 33: / Line 33: @@
 |-
 | 00:44
-| સંદર્ભિત સ્પોકન ટ્યુટોરીયલો માટે કૃપા કરી સ્પોકન ટ્યુટોરીયલ વેબસાઈટનો સંદર્ભ લો.
+| સંદર્ભિત સ્પોકન ટ્યુટોરીયલો માટે  સ્પોકન ટ્યુટોરીયલ વેબસાઈટનો સંદર્ભ લો.
 |-
 | 00:50
-| પર્લ 5 વિશેષ બ્લોકો પ્રદાન કરે છે.
+| પર્લ '''5''' વિશેષ બ્લોકો પ્રદાન કરે છે.
 |-
@@ Line 153: / Line 153: @@
 |-
 | 02:37
-| ''' BEGIN''' બ્લોક પછી મેં અર્ધવિરામ આપ્યું નથી કૃપા કરી તેની નોંધ લો.
+| ''' BEGIN''' બ્લોક પછી મેં અર્ધવિરામ આપ્યું નથી  તેની નોંધ લો.
 |-

@@ Line 5: / Line 5: @@
 |-
 | 00:01
-| પર્લમા ''' BLOCKS'''  પરનાં સ્પોકન ટ્યુટોરીયલમાં સ્વાગત છે
+| પર્લમા ''' BLOCKS'''  પરનાં સ્પોકન ટ્યુટોરીયલમાં સ્વાગત છે.
 |-
@@ Line 128: / Line 128: @@
 |-
 |02:08
-|and press  '''Enter.'''
+|અને   '''Enter.''' દબાઓ.
 |-
 |02:10
-|This will open the ''' beginBlock dot pl ''' file in '''gedit. '''
+|  આ '''gedit. ''' મા  ''' beginBlock dot pl ''' ફાઈલ ખોલશે.
 |-
 |02:15
-|Type the following piece of code as displayed on the screen.
+| સ્ક્રીન પર દશ્યમાન કોડ ટાઈપ કરો.
 |-
 |02:20
-|Let us look at what I have written inside the script.
+| ચાલો જોઈએ મેં સ્ક્રીપ્ટ મા શું લખ્યું છે.
 |-
 |02:24
-|Here, we have printed some text before and after  ''' BEGIN''' blocks.
+| અહી આપણે  ''' BEGIN'''  બ્લોકસ ના આગળ અને પાછળ અમુક પ્રિન્ટ સ્ટેટમેંટ લખ્યું હતું.
 |-
 |  02:31
-| Similarly, I have written one ''' print statement''' in each '''BEGIN''' block.
+| તેમજ મેં દરેક  '''BEGIN''' બ્લોકસ મા એક પ્રિન્ટ સ્ટેટમેંટ લખ્યું છે.
 |-
 |   02:37
-|Please note, I have not given the semicolon after the ''' BEGIN''' blocks.
+| નોંધ લો કે મેં  ''' BEGIN''' બ્લોકસ પછી સેમીકોલન નથી આપ્યું.
 |-
 | 02:42
-|Putting a semicolon, will result in a syntax error, on execution of the program.
+| સેમીકોલન મુકતા, પ્રોગ્રામ ને એક્ઝીક્યુટ કરતી વખતે પરિણામ મા સિન્ટેક્સ એરર મળશે.
 |-
 |02:49
-|Now, press ''' Ctrl+s''' to save the file.
+હવે ફાઈલ સેવ કરવા માટે ''' Ctrl+s''' દબાઓ.
 |-
 | 02:53
-| Then switch to  terminal and execute the script by typing,
+|  પછી ટર્મિનલ પર જાઓ અને સ્ક્રીપ્ટ એક્ઝીક્યુટ કરવા માટે ટાઈપ કરો,
 |-
@@ Line 172: / Line 172: @@
 |-
 |03:01
-|and press '''Enter.'''
+|અને '''Enter.''' દબાઓ.
 |-
 |03:04
-|You will get the output as displayed on the terminal.
+| ટર્મિનલ પર દેખાય છે તે આઉટપુટ તમને મળશે.
 |-
 |  03:09
-| Notice that The line written inside the first '''BEGIN''' block gets printed first and
+| નોંધ લો કે BEGIN''' બ્લોક મા લખેલ લાઈન પ્રથમ પ્રિન્ટ થાય છે અને
 |-
 |03:16
-| The first '''print statement''' in the script actually gets printed after the '''BEGIN block statements. '''
+|  સ્ક્રીપ્ટમા પ્રથમ પ્રિન્ટ સ્ટેટમેંટ વાસ્તવમાં 'BEGIN block statements. ''' પછી પ્રિન્ટ થશે.
 |-
 |  03:25
-| '''BEGIN blocks''' gets executed in the order of their declaration.
+| '''BEGIN blocks''' તેના ડીકલેરે શન ક્રમમા એક્ઝ્ક્યુત થાય છે.
 |-
 |   03:31
-|  From this example, it is evident that:
+| આ ઉદાહરણથી તે સ્પષ્ટ થાય છે:
 |-
 |  03:34
-|The code written inside the ''' BEGIN'''  blocks gets executed first.
+| ''' BEGIN'''  બ્લોકસ મા લખેલ કોડ પ્રથમ એક્ઝીક્યુટ થાય છે.
 |-
 | 03:40
-| This is irrespective of the location of the ''' BEGIN''' block inside ''' PERL'''  script.
+|  આ પ્રલ સ્ક્રીપ્ટમા ''' BEGIN''' બ્લોકના પોજીશનપર  અનપેક્ક્ષિત હોય છે.
 |-
 | 03:46
-| '''BEGIN blocks'''  always get executed in the '''First In First Out''' manner.
+| '''BEGIN blocks''' હમેશા '''First In First Out'''  પદ્ધતિ થી એક્ઝીક્યુટ થાય છે.
 |-
 |03:52
-|So one of the use of this '''block''' is to include files inside a Perl script, before actual execution starts.
+|  તે માટે આ બોલ્કનો એક ઉપયોગ પર્લ સ્ક્રીપ્ટના એક્ઝીક્યુશન શુરુ કરવાના પેહેલા તેમાં ફાઈલ સમાવિષ્ઠ કરવા માટે થાય છે.
 |-
 |04:01
-|Now, let us understand the '''END block '''
+| ચાલો હવે  '''END block ''' વિષે સમજીએ.
 |-

@@ Line 5: / Line 5: @@
 |-
 | 00:01
-|Welcome to the spoken tutorial on ''' BLOCKS''' in Perl.
+| પર્લમા ''' BLOCKS'''  પરનાં સ્પોકન ટ્યુટોરીયલમાં સ્વાગત છે
 |-
 | 00:06
-| In this tutorial, we will learn about the various ''' BLOCKS''' available in '''Perl'''
+| આ ટ્યુટોરીયલમાં આપણે પર્લમાં ઉપલબ્ધ વિવિધ બોલ્ક્સ વિશે શીખીશું;
 |-
 |00:13
-|I am using ''' Ubuntu Linux 12.04''' operating system and ''' Perl 5.14.2'''
+| અહીહું વાપરી રહ્યી છું ઉબુન્ટુ લીનક્સ 12.04 ઓપરેટીંગ સીસ્ટમ અને પર્લ Perl 5.14.2 .
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 |00:21
-| I will also be using the ''' gedit''' Text Editor.
+| હું gedit ટેક્સ્ટ એડીટર  પણ વાપરીશ.
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 |00:26
-|You can use any text editor of your choice.
+|તમે તમારા પસંદનું કોઈપણ ટેક્સ્ટ એડીટર વાપરી શકો છો.
-−
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 |00:31
-|As a pre-requisite, you should have basic knowledge of '''Variables, Comments''' in ''' Perl '''
+| પૂર્વ જરૂરી રીતે તમને પર્લમા  '''Variables, Comments''' વિષે સામાન્ય જાણકારી હોવી જોઈએ.
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 | 00:38
-| Knowledge of ''' Data structures''' in '''PERL''' will be an added advantage.
+|  પર્લમા ડેટા સ્ટ્રક્ચરની  જાણકારી હોવી વધુ ફાયદા કારક છે.
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 | 00:44
-|Please go through the relevant spoken tutorials on the ''' spoken tutorial ''' website.
+|સ્પોકન ટ્યુટોરીયલ વેબસાઈટ પર સંદર્ભિત સ્પોકન ટ્યુટોરીયલોનો સંદર્ભ લો.
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 | 00:50
-|''' Perl''' provides 5 special '''blocks.'''
+| પર્લ  '''5'''   વિશિષ્ઠ બોલ્ક્સ પ્રદાન કરે છે.
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 |00:53
-|These '''blocks''' get executed at various stages of a '''Perl''' program.
+| આ બોલ્ક્સ પર્લ પ્રોગ્રામના વિવિધ તબક્કામાં  એક્ઝીક્યુટ થાય છે.
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 |00:59
-|These blocks are:
+|બોક્લ્સ છે:
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@@ Line 69: / Line 68: @@
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 |01:06
-| Let us start with understanding the ''' BEGIN''' block.
+| ચાલો ''' BEGIN'''  બોક્લને સમજવા થી શરુઆત કરીએ.
 |-
 |01:10
-|''' BEGIN''' block get executed at the time of compilation.
+| કમ્પાઇલેશન કરતી વખતે  ''' BEGIN''' બ્લોક એક્ઝીક્યુટ થાય છે.
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 |01:15
-|So, any code written inside this block gets executed first during compilation.
+| તો, આ કોઇપણ કોડ જે  બોલ્કમાં લખેલ તે કમ્પાઇલેશન કરતી વખતે  પ્રથમ એક્ઝીક્યુટ થાય છે.
 |-
 |01:22
-|We can have several ''' BEGIN ''' blocks inside a ''' Perl''' script.
+|આપણી પાસે પર્લ સ્ક્રીપ્ટમા અનેક  '''BEGIN ''' બોલ્કસ છે.
 |-
 |01:26
-| These blocks will get executed in the order of declaration.
+| આ બોલ્ક્સ ડીકલેરેશન ના ક્રમમાં એક્ઝીક્યુટ થશે.
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 | 01:31
-|That is in the ''' First define First execute ''' pattern
+|  આ ''' First define First execute '''  પેટર્ન છે.
 |-
 |01:35
-|The syntax for ''' BEGIN block''' is as follows
+| ''' BEGIN block''' માટે સિન્ટેક્સ આપ્યા પ્રમાણે છે.
 |-
 |01:40
-| '''BEGIN''' in capital letters space open curly bracket
+|કેપિટલ અક્ષરોમા '''BEGIN''' સ્પેસ ખુલ્લો છગડીયો કૌંસ
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 | 01:45
-| Press ''' Enter.'''
+| ''' Enter.''' દબાઓ.
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 |01:47
-|Piece of code to be executed at the time of compilation
+| કમ્પાઇલેશન કરતી વખતે એક્ઝીક્યુટ કરવા માટે નો કોડ.
 |-
 |01:51
-| Press '''Enter '''
+| '''Enter ''' દબાઓ.
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 |01:52
-|Close curly bracket
+| બંદ ખુલ્લો છગડીયો કૌંસ
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 |01:55
-|Now, let us look at an example of '''BEGIN''' blocks.
+|ચાલો હવે 'BEGIN''' બ્લોકસ ઉદાહરણ જોઈએ.
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 |01:59
-|Open the Terminal and type
+|ટર્મિનલ ખોલો અને ટાઈપ કરો.
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