PERL/C3/Exception-and-error-handling-in-PERL/Khasi
From Script | Spoken-Tutorial
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| 00:01 | Khublei ngi pdiangsngewbha iaphi sha ka Spoken Tutorial halor ka Exception and error handling ha ka PERL. |
| 00:06 | Ha kane ka jinghikai, ngin ia pule kumno ban:
Catch ia ki errors bad Handle ia ki exceptions. |
| 00:12 | Na ka bynta kane ka jinghikai, nga pyndonkam da ka:
Ubuntu Linux 12.04 operating system Perl 5.14.2 bad ka gedit Text Editor. |
| 00:23 | Phi lah ban pyndonkam ia kano kano ka text editor katkum kamon jong phi. |
| 00:27 | Ban bud ia kane ka jinghikai, phi dei ban don ia ka jingtip shaphang ka Perl programming. |
| 00:32 | Lada phim don, te leit sha ki spoken tutorials ba iadei halor ka Perl ha ka spoken tutorial website. |
| 00:39 | Ynda ka error ka mih, ka Exception handling ka pynkylla ia ka execution jong ka program na ka normal execution path. |
| 00:47 | Error handling ka iarap ban pynioh biang ia ka program, khlem da khang ia ka application. |
| 00:53 | Ngi lah ban ithuh bad trap ia ka error ha ki bun ki rukom. Ngin ia peit ia ki katto katne ki methods kiba shait pyndonkam ha ka Perl. |
| 01:01 | Ka warn function ka ai tang ia ka khubor kaba maham khlem da shim ia ka sien jam hadien kata. |
| 01:07 | Ka die function mar mar ka khang ia ka execution bad ka pyni ia ka error message. |
| 01:13 | To ngin ia pyrshang ban sngewthuh ia ka die function da kaba pyndonkam ia ka sample program kaba nga lah dep save lypa. |
| 01:20 | Leit sha ka terminal bad type: gedit die dot pl ampersand bad shon Enter. |
| 01:29 | Une u dei u code ha ka 'die.pl' file. To mynta ngin ia pyrshang ban sngewthuh ia une u code. |
| 01:35 | Hangne, ngi lah define ia ka function divide kaba shim ia ar tylli ki input parameters
kata dollar numerator bad dollar denominator. |
| 01:46 | At the rate underscore (@_) udei u special variable uba la pyndonkam ban pass ia ka parameter list sha ka function. |
| 01:53 | Lada u denominator udei zero, u die function un sa iehnoh ia ka script. |
| 01:57 | Kan sa pyni ruh ia ka error message na ka bynta ki nongpyndonkam ban pule. Lymda kumta, kan sa print ia ka output. |
| 02:05 | Kine kidei ki function call statements. |
| 02:08 | Ki ar tylli ki jingleh ba ha shwa, lah execute ia ka function namar ka parameter ba ar kam dei zero. |
| 02:15 | Ka jingleh balai, u denominator value udei zero. Te, ka die function kan sa execute. |
| 02:23 | Ka divide function ba khatduh kan nym execute namar ba ka die function ka iehnoh ia ka script. |
| 02:29 | Shon Ctrl + S ban save ia ka program. |
| 02:32 | To ngin ia execute ia ka program. |
| 02:35 | Phai biang sha ka terminal bad type: perl die dot pl bad shon Enter. |
| 02:43 | Ka output ka lah paw kumba pyni hangne.
"Can't divide by zero!" |
| 02:49 | Kane kadei ka error message kaba ngi lah ai ha ka program, ha ka die statement. |
| 02:54 | Hadien kane, ngin sa iohi kumno ban pyndonkam ia ka eval function ha ka error handling. |
| 03:00 | eval function lah pyndonkam na ka bynta ka handling run-time errors lane exceptions. |
| 03:06 | Kum ka nuksa, built-in errors kum ka out of memory, divide by zero lane user defined errors. |
| 03:14 | Ka general syntax na ka bynta ka eval function la pyni hangne. |
| 03:19 | Ka dollar exclamation($!) special variable ka buh ia ka error message, lada don. |
| 03:25 | Lymda kumta, ka dollar exclamation( $!) holds an empty string. Kaba mut ia ka la evaluate kum false. |
| 03:33 | To ngin ia pyrshang ban sngewthuh ia ka eval function da kaba pyndonkam ia ka sample program.
Leit sha ka terminal. |
| 03:40 | Type: gedit eval dot pl ampersand bad shon Enter. |
| 03:47 | Ha ka eval dot pl file, type ia u code harum kumba la pyni ha ka screen. To ngin ia batai mynta ia u code. |
| 03:54 | Hangne, ha ka nuksa jong ngi, open FILE ka pyntreikam ia ka die statement, lada don ia ka jingeh ha kaban plie ia ka “test.dat”. |
| 04:05 | Perl ka ai ia ka system error message na ka eval block ba khatduh sha ka variable dollar exclamation( $!). |
| 04:13 | Shon Ctrl + S ban save ia ka file. |
| 04:17 | Phai biang sha ka terminal bad type: perl eval dot pl bad shon Enter. |
| 04:25 | Ka system error message ka paw kumba la pyni. |
| 04:30 | To ngin ia peit ia kiwei pat ka nuksa. Ha kane ka program, ngin sa iohi ia ka error message kaba pynphai na ka eval function da kaba pyndonkam ia ka '$@' (dollar at the rate). |
| 04:40 | To ngin ia phai biang sha ka eval dot pl file. |
| 04:44 | Type ia u code kumba la pyni ha ka screen. |
| 04:48 | Ngi ia pass ia ka $total, $count kum ka input parameters sha ka function average. |
| 04:56 | Ngi lah ban ioh ia ka error lada ka count kadei zero. |
| 05:00 | Hangne, lah peit ia ka da ka die statement. |
| 05:04 | Ka error message kaba pynphai na ka eval kapaw da kaba pyndonkam ia ka $@ ( dollar at the rate). |
| 05:11 | Lada kam paw, kan sa print ia ka Average value. |
| 05:15 | Shon Ctrl +S ban save ia ka file. To ngin ia execute ia ka program. |
| 05:22 | Phai biang sha ka terminal bad type: perl eval.pl bad shon Enter. |
| 05:31 | Ka output kadei kumba la pyni hangne. |
| 05:35 | Da kane ngi la poi sha kaba kut jong kane ka jinghikai. To ngin ia batai kyllum. |
| 05:41 | Ha kane ka jinghikai, ngi lah pule kumno ban:
Catch ia ki error bad Handle ia ki exceptions. |
| 05:47 | Kum ka kam, leh ia kane harum.
Ha ka Linux machine jong phi, shna ia ka file 'emp.txt' ryngkat 5 tylli ki kyrteng jong ki employee |
| 05:57 | Pynkylla ia ka permission jong ka 'emp.txt' sha ka READ only. |
| 06:02 | Kynmaw: Leit sha ka Linux spoken tutorials ba iadei ha ka spoken tutorial website na ka bynta ka change permission |
| 06:10 | Thoh ia ka Perl program ban plie ia ka 'emp.txt' file ha ka WRITE mode bad pyndap katto katne ki kyrteng jong ki employee ha ka. |
| 06:19 | Pyndonkam ia ka "eval", print ia ka error message ba iadei lada ka open/write operation kam treikam. |
| 06:26 | Ka video ha ka link harum ka kyllum lang ia ka Spoken Tutorial project. Sngewbha download bad peit ia ka. |
| 06:33 | Ka kynhun jong ka Spoken Tutorial Project:
Ka pynlong ia ki workshops da kaba pyndonkam ia ki spoken tutorials bad Ka ai ia ki certificates sha kito kiba pass ha ka online tests. |
| 06:42 | Na ka bynta ki jingtip ba bniah, sngewbha thoh sha ngi. |
| 06:46 | Ia ka Spoken Tutorial project la bei tyngka da ka NMEICT, MHRD, Sorkar India. |
| 06:53 | Kham bun ki jingtip halor kane ka mission kidon ha kane ka link. |
| 06:58 | Ma nga u Pdiangburom na Shillong, nga pynkut ia kane. Khublei shibun. |
