Oracle database supports perl- and POSIX-compatible regular expressions with five elegant and powerful functions: REGEXP_REPLACE, REGEXP_SUBSTR, REGEXP_INSTR, REGEXP_LIKE, and REGEXP_COUNT.
This session will demonstrate their nuances and how to use them effectively for data cleansing, manipulation and selection, for validating things such as Social Security Numbers, credit cards, IP addresses, phone numbers, DNAs, XMLs, for extracting things such as email-ids, hostnames from URLs and strings, and for transposing delimited columns to rows. There will be a demo of a few tricky examples taken from forums.oracle.com and asktom.oracle.com.
The session will end with fuzzy matching and optimization techniques, and things to watch out for.
http://docs.oracle.com/cd/E11882_01/appdev.112/e25518/adfns_regexp.htm
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
Programming is an essential skill if you seek a career in software development, or in other fields of Coding. This fundamental of programming course is the first in the specialization for Introduction to Programming in C, but its lessons extend to any language you might want to study. This is because programming is primarily about solving a set of problems and writing the algorithm.
Oracle database supports perl- and POSIX-compatible regular expressions with five elegant and powerful functions: REGEXP_REPLACE, REGEXP_SUBSTR, REGEXP_INSTR, REGEXP_LIKE, and REGEXP_COUNT.
This session will demonstrate their nuances and how to use them effectively for data cleansing, manipulation and selection, for validating things such as Social Security Numbers, credit cards, IP addresses, phone numbers, DNAs, XMLs, for extracting things such as email-ids, hostnames from URLs and strings, and for transposing delimited columns to rows. There will be a demo of a few tricky examples taken from forums.oracle.com and asktom.oracle.com.
The session will end with fuzzy matching and optimization techniques, and things to watch out for.
http://docs.oracle.com/cd/E11882_01/appdev.112/e25518/adfns_regexp.htm
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
Programming is an essential skill if you seek a career in software development, or in other fields of Coding. This fundamental of programming course is the first in the specialization for Introduction to Programming in C, but its lessons extend to any language you might want to study. This is because programming is primarily about solving a set of problems and writing the algorithm.
write the code for Part 1 ContextFree Grammars Create con.pdfaaryanentp
write the code for
Part 1 Context-Free Grammars
Create context-free grammars for these languages. The grammar must be specified as a text
file in the format below.
1. (Filename: cfg1.txt) Create a context-free grammar for the language that accepts all odd
length strings over the alphabet T = {a, b} that begin with a and end with b.
2. (Filename: cfg2.txt) Create a context-free grammar for the alphabet T = {x, y, z} that is
equivalent to the regular expression: ^(xy?)*(zz|xyz)+$
Grammar File Format
The grammar file format must be specified using the notation in class. Some rules:
Nonterminals can either be a single capital letter or a longer string (with no spaces). If you
use longer strings, you must separate the elements on the right-hand side of the
production with spaces.
The terminal alphabet T is provided with each problem. Anything that is not a terminal is
assumed to be a nonterminal.
The assignment requires the grammar to be a context-free grammar. This means that the
left-hand side of each production only consists of a single nonterminal.
You may use the shorthand notation using |.
The start symbol must either be S or Start.
You should use E or Empty to represent the empty string.
Example using single letter nonterminals with T = {a, b}:
S -> aS
S -> X
X -> bX
X -> E
Example using longer string nonterminals and shorthand notation with T = { (, ), +, *, 0, 1}:
Start -> BoolExpr
BoolExpr -> BoolExpr BoolOp BoolExpr | ( BoolExpr ) | BoolVal
BoolOp -> + | *
BoolVal -> 0 | 1
Unfortunately, there is no Python simulator for testing your grammars like the DFAs in last
assignments and the Turing machines in Part 2. Your grammars will be graded manually.
using
# Turing machine simulator
# Original Author: Matt Chu (mwc2110@columbia.edu)
import sys
from optparse import OptionParser
COMMENT = "#"
BLANK = "B"
LEFT = "L"
RIGHT = "R"
# Parses command line
def parse_command_line():
parser = OptionParser()
parser.add_option("-d", "--display_mode", dest = "display_mode",
help = "Display mode")
parser.add_option("-t", "--tm_file", dest = "machine_file",
help = "Turing machine file (.tur)")
parser.add_option("-s", "--string", dest = "tape_string",
help = "Initial string")
options, args = parser.parse_args()
if options.machine_file == None:
options.machine_file = input("Enter the name of the machine file: ")
if options.tape_string == None:
options.tape_string = input("Enter the starting string: ")
if options.display_mode == None:
valid = False
while not valid:
print("Select display mode:")
print("1. Step through the program (stops after each step)")
print("2. Display each step (does not stop until the machine halts)")
print("3. Display the final state (does not stop until the machine halts)")
choice = int(input("Your choice: "))
if choice == 1:
options.display_mode = "step"
valid = True
elif choice == 2:
options.display_mode = "show"
valid = True
elif choice == 3:
options.display_mode = "final"
valid = True
else:
print("Invalid choice")
if not options.di.
When performing an investigation it is helpful to be reminded of the powerful options available to the investigator. This document is aimed to be a reference to the tools that could be used.
vim is the "improved" version of the popular "vi" editor in UNIX/Linux environments.
With this powerful editor, do you know how to:
delete lines between two different search strings, repetitively?
replace multiple spaces with a single space OR trim all the leading or trailing spaces?
convert to upper/lower case, title/sentence case, to toggle case?
edit many files with multiple windows or tabs, and execute the same command on all at the same time?
delete blank lines or replace multiple blanks lines with one line?
search and replace with back referencing, and regular expressions?
identify palindromes, repeating words?
format lines (center-, left-, right-align) like you do in MS Word, but only lines that meet certain conditions?
go back to previous version as of N versions/seconds/minutes/hours ago even after saving with :w?
In this three-hour class, you will learn how to use vim effectively with shortcuts, markers, regular expressions, substitutions, grouping and back referencing, mapping, non-volatile buffers, recalling the nth delete, recording and replaying with macros, batching, and customizations. Concepts will be explained with demos. You will come away knowing how to simplify mundane editing tasks and become more productive.
Master Data Management - MDM - Pasos para implementar MDMJose Pla
¿Qué es MDM?
¿Qué consideraciones tener para implementar MDM?
¿Cómo implementar MDM?
Relación de MDM en el área de Inteligencia de Negocios - BI
Casos de Estudio
Estudio de viabilidad de implementación de bi en el sector público de Costa RicaJose Pla
Proyecto Final de Graduación para Master en Administración de Negocios con énfasis en Banca y Finanzas
Estudio para sensibilizar sobre los posibles beneficios y razones de implementación de Inteligencia de Negocios en el Sector Público de Costa Rica
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
1. Command
vi file
vi +n file
vi +$ file
vi +/pattern file
vi -r file
Starting vi
Description
start at line 1 of file
start at line n of file
start at last line of file
start at pattern in file (do not insert a space between the
``+'' and ``/'' characters.
recover file after a system crash
Inserting text
Keys pressed
Text inserted
a
after the cursor
A
after last character on the line
i
before the cursor
I
before first character on the line
o
open line below current line
O
open line above current line
Deleting text
Keys pressed
Text deleted
X
character under cursor
12x
12 characters
X
character to left of cursor
dw
word
3dw
three words
D0
to beginning of line
D$
to end of line
dd
current line
5dd
five lines
D{
to beginning of paragraph
D}
to end of paragraph
:1,. d
to beginning of file
:.,$ d
to end of file
:1,$ d
whole file
2. Moving the cursor
Keys pressed
Effect
h
left one character
l or <Space> right one character
k
up one line
j or <Enter> down one line
b
left one word
w
right one word
(
start of sentence
)
end of sentence
{
start of paragraph
}
end of paragraph
1G
top of file
nG
line n
G
end of file
<Ctrl>W
first character of insertion
<Ctrl>U
up ½ screen
<Ctrl>D
down ½ screen
<Ctrl>B
up one screen
<Ctrl>F
down one screen
Saving files and quitting vi
Command
Description
:e file
edit file (save current file with :w first)
:w
save (write out) the file being edited
:w file
save as file
:w! file
save as an existing file
:q
quit vi
:wq
save the file and quit vi
save the file if it has changed and quit
:x
vi
:q!
quit vi without saving changes
3. Changing and replacing text
Keys
Text changed or replaced
cw
Word
3cw three words
cc
current line
5cc five lines
r
current character only
R
current character and those to its right
s
current character
S
current line
switch between lowercase and
~
uppercase
Searching for text
Search
Finds
/and
next occurrence of ``and'', for example, ``and'', ``stand'', ``grand''
?and
previous occurrence of ``and''
/^The next line that starts with ``The'', for example, ``The'', ``Then'', ``There''
/^The> next line that starts with the word ``The''
/end$
next line that ends with ``end''
/[bB]ox next occurrence of ``box'' or ``Box''
n
repeat the most recent search, in the same direction
N
repeat the most recent search, in the opposite direction
Expression
.
*
.*
>
*
^
$
[set]
[XYZ]
[[:upper:]][[:lower:]]*
[^set]
[^XYZ[:digit:]]
Matching patterns of text
Matches
any single character
zero or more of the previous expression
zero or more arbitrary characters
end of a word
quote a special character
the character "*"
beginning of a line
end of a line
one character from a set of characters
one of the characters ``X'', ``Y'', or ``Z''
one uppercase character followed by any number of lowercase characters
one character not from a set of characters
any character except ``X'', ``Y'', ``Z'', or a numeric digit
4. Searching for and replacing text
Command
Description
:s/pear/peach/g
replace all occurrences of ``pear'' with ``peach'' on current line
:/orange/s//lemon/g change all occurrences of ``orange'' into ``lemon'' on next line containing ``orange''
replace all words starting with ``file'' by ``directory'' on every line from current line
:.,$/<file/directory/g
onward, for example, ``filename'' becomes ``directoryname''
:g/one/s//1/g
:%s/old/new
replace every occurrence of ``one'' with 1, for example, ``oneself'' becomes ``1self'',
``someone'' becomes ``some1''
replace the first occurrence of “old” with “new” on every line
Using markers and buffers
Command
Description
mf
set marker named ``f''
`f
go to marker ``f''
´f
go to start of line containing marker ``f''
"s12yy
copy 12 lines into buffer ``s''
"ty}
copy text from cursor to end of paragraph into buffer ``t''
"ly1G
copy text from cursor to top of file into buffer ``l''
"kd`f
cut text from cursor up to marker ``f'' into buffer ``k''
"kp
paste buffer ``k'' into text
Options to the :set command
Option
all
noautoindent
autoprint
noautowrite
nobeautify
directory=/var/preserve
noerrorbells
hardtabs=8
noignorecase
nolisp
nolist
Effect
list settings of all options
prevent the preparation of structured program text.
display the current line after each ex copy, move, or substitute command.
do not automatically write the contents of the modified buffer to the current file
when you give a next, rewind, tag, or ``!'' command, or a <Ctrl>^ (switch files) or
<Ctrl>] (goto tag) command.
do not discard all control characters except <Tab>, newline and formfeed from
the input.
set the default directory for the vi editing buffer. noedcompatible the absence of g
and c suffixes on substitute commands is not remembered.
do not precede error messages with a bell.
set the boundaries on which terminal hardware tabs are set or on which tabs the
system expands.
do not map all uppercase characters to thier lowercase equivalent.
do not autoindent to indent appropriately for LISP code.
do not display the tabs and end of line characters
5. magic
mesg
nomodelines
nonumber
nooptimize
paragraphs=IPLPPPQPP LIpplpipnpb
prompt
redraw
remap
report=5
scroll=11
sections=NHSHH HUuhsh+c
shell=/usr/bin/ksh)
shiftwidth=8
noshowmatch
noshowmode
noslowopen
tabstop=8
taglength=0
tags=tags /usr/lib/tags)
term=value of shell TERM variable)
timeout
warn
window=23
wrapscan
wrapmargin=0
nowriteany
with nomagic set, the number of regular expression metacharacters is greatly
reduced, with only caret ``^'' and dollar sign ``$'' having special effects. In
addition, the metacharacters tilde ``~'' and ampersand ``&'' in replacement
patterns are treated as normal characters.
prevents other users writing to your screen with the UNIX write command and
scrambling your screen as you edit.
disable the first five and last five lines of a file being read in to be interpreted as
vi or ex commands.
do not display output lines with their line numbers.
allow the terminal perform automatic carriage returns when displaying more than
one line of output.
set the paragraph delimiters for the { and } operations.
force ex input to be prompted for with a colon ``:''.
simulate (using great amounts of output) an intelligent terminal on a dumb
terminal.
mapped characters are repeatedly tried until they are unchanged. For example, if o
is mapped to O and O is mapped to I, o will map to I if remap is set, and to O if
noremap is set.
set the threshold for feedback from commands.
the number of logical lines scrolled when <Ctrl>-D is received from a terminal
input.
set the section macros for the [[ and ]] operations.
set the pathname of the shell forked for the shell escape ``!'' command, and by the
shell command.
set the width of a software tab stop, used in reverse tabbing with <Ctrl>-D when
using autoindent to append text, and by the shift commands.
when a ``)'' or ``}'' is typed, moves the cursor to the matching ``('' or ``{'' for one
second if this matching character is on the screen.
prevents the message ``INPUT MODE'' from being displayed on the lower right
corner of the screen when insert mode is activated.
enables the display of updates during inserts.
expand tabs in the input file to be on n boundaries for the purposes of display.
accept the first n characters in a tag name to be significant, but all others to be
ignored.
set a path of files to be used as tag files for the tag command.
set the terminal type of the output device.
set the milliseconds to wait for subsequent input characters.
displays ``[No write since last change]'' before a shell escape command (!) if file
has not been saved.
set the number of lines in a text window.
searches using the regular expressions in addressing wrap around past the end of
the file.
defines the margin for automatic insertion of newlines during text input.
perform all checks normally made before write commands.
6. Pasting Text using Put
Often, when you delete or cut text, you may wish to reinsert it in another location of the
document. The Put command will paste in the last portion of text that was deleted since
deleted text is stored in a buffer. To use this command, place the cursor where you wish the
deleted text to appear. Then use p to reinsert the text. If you are inserting a line or
paragraph use the lower case p to insert on the line below the cursor or upper case P to
place in on the line above the cursor.
Copying Text with Yank
If you wish to make a duplicate copy of existing text, you may use the yank and put
commands to accomplish this function. Yank copies the selected text into a buffer and holds
it until another yank or deletion occurs. Yank is usually used in combination with a word or
line object such as the ones shown below:
yw copies a word into a buffer (7yw copies 7 words)
yy copies a line into a buffer (3yy will copy 3 lines)
Once the desired text is yanked, place the cursor in the spot in which you wish to insert the
text and then use the put command (p for line below or P for line above) to insert the
contents of the buffer.
Joining Lines
Since vi does not use automatic word wrap, it is not unusual in editing lines to end up with
lines that are too short and that might be improved if joined together. To do this, place your
cursor on the first line to be joined and type J. As with other commands, you can precede J
with a number to join multiple lines (4J joins 4 lines).