This document provides an overview of regular expressions and how they work with patterns and matchers in Java. It defines what a regular expression is, lists common uses of regex, and describes how to create patterns, use matchers to interpret patterns and perform matches, and handle exceptions. It also covers regex syntax like metacharacters, character classes, quantifiers, boundaries, and flags. Finally, it discusses capturing groups, backreferences, index methods, study methods, and replacement methods in the Matcher class.
React Router is the most widely used router for React, in use by almost half of all React projects. This talk is about using React Router in your project. It will start with the basics and will go through all features React Router has to offer in the current version and the upcoming 1.0 release. I will also go through some common problems including data fetching and authentication.
Java Multi Threading Concept
By N.V.Raja Sekhar Reddy
www.technolamp.co.in
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Abstraction is a process by which concepts are derived from the usage and classification of literal ("real" or "concrete") concepts.
Abstraction is a concept that acts as a super-categorical noun for all subordinate concepts, and connects any related concepts as a group, field, or category.
React Router is the most widely used router for React, in use by almost half of all React projects. This talk is about using React Router in your project. It will start with the basics and will go through all features React Router has to offer in the current version and the upcoming 1.0 release. I will also go through some common problems including data fetching and authentication.
Java Multi Threading Concept
By N.V.Raja Sekhar Reddy
www.technolamp.co.in
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Like us @ https://www.facebook.com/Technolamp.co.in
subscribe videos @ http://www.youtube.com/user/nvrajasekhar
Abstraction is a process by which concepts are derived from the usage and classification of literal ("real" or "concrete") concepts.
Abstraction is a concept that acts as a super-categorical noun for all subordinate concepts, and connects any related concepts as a group, field, or category.
JavaScript - Chapter 9 - TypeConversion and Regular Expressions WebStackAcademy
Type Conversion:
JavaScript is loosely typed language and most of the time operators automatically convert a value to the right type but there are also cases when we need to explicitly do type conversions.
While JavaScript provides numerous ways to convert data from one type to another but there are two most common data conversions :
Converting Values to String
Converting Values to Numbers
Regular Expressions:
A regular expression is an object that describes a pattern of characters.
The JavaScript RegExp class represents regular expressions, and both String and RegExp define methods that use regular expressions to perform powerful pattern-matching and search-and-replace functions on text.
Java is Object Oriented Programming. Java 8 is the latest version of the Java which is used by many companies for the development in many areas. Mobile, Web, Standalone applications.
Java 8 Stream API. A different way to process collections.David Gómez García
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These are the slides I used on my talk at the "Tech Thursday" by Oracle in June in Madrid.
JavaScript - Chapter 4 - Types and StatementsWebStackAcademy
A computer program is a list of "instructions" to be "executed" by a computer.
In a programming language, these programming instructions are called statements.
A JavaScript program is a list of programming statements.
JavaScript statements are composed of:
Values, Operators, Expressions, Keywords, and Comments.
This statement tells the browser to write "Hello Dolly." inside an HTML element with id="demo":
JavaScript Data Types
JavaScript variables can hold many data types: numbers, strings, objects and more.
In programming, data types is an important concept.
To be able to operate on variables, it is important to know something about the type.
Python provides numerous built-in functions that are readily available to us at the Python prompt. Some of the functions like input() and print() are widely used for standard input and output operations respectively.
JavaScript - Chapter 9 - TypeConversion and Regular Expressions WebStackAcademy
Type Conversion:
JavaScript is loosely typed language and most of the time operators automatically convert a value to the right type but there are also cases when we need to explicitly do type conversions.
While JavaScript provides numerous ways to convert data from one type to another but there are two most common data conversions :
Converting Values to String
Converting Values to Numbers
Regular Expressions:
A regular expression is an object that describes a pattern of characters.
The JavaScript RegExp class represents regular expressions, and both String and RegExp define methods that use regular expressions to perform powerful pattern-matching and search-and-replace functions on text.
Java is Object Oriented Programming. Java 8 is the latest version of the Java which is used by many companies for the development in many areas. Mobile, Web, Standalone applications.
Java 8 Stream API. A different way to process collections.David Gómez García
A look on one of the features of Java 8 hidden behind the lambdas. A different way to iterate Collections. You'll never see the Collecions the same way.
These are the slides I used on my talk at the "Tech Thursday" by Oracle in June in Madrid.
JavaScript - Chapter 4 - Types and StatementsWebStackAcademy
A computer program is a list of "instructions" to be "executed" by a computer.
In a programming language, these programming instructions are called statements.
A JavaScript program is a list of programming statements.
JavaScript statements are composed of:
Values, Operators, Expressions, Keywords, and Comments.
This statement tells the browser to write "Hello Dolly." inside an HTML element with id="demo":
JavaScript Data Types
JavaScript variables can hold many data types: numbers, strings, objects and more.
In programming, data types is an important concept.
To be able to operate on variables, it is important to know something about the type.
Python provides numerous built-in functions that are readily available to us at the Python prompt. Some of the functions like input() and print() are widely used for standard input and output operations respectively.
Recognizing patterns in a sequence of rows has been a capability that was widely desired, but not possible with SQL until now. There were many workarounds, but these were difficult to write, hard to understand, and inefficient to execute. Beginning in Oracle Database 12c, you can use the MATCH_RECOGNIZE clause to achieve this capability in native SQL that executes efficiently. This presentation discusses how to do this.
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
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
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A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
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👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
2. •
A Regular expression is a pattern describing a
certain amount of text.
•
A regular expression, often called a pattern, is
an expression that describes a set of strings.
- Wikipedia
4.
Pattern: To create a pattern, you must first invoke
one of its public static compile methods, which
will then return a Pattern object. These methods
accept a regular expression as the first argument.
Matcher: A Matcher object is the engine that
interprets the pattern and performs match
operations against an input string.
PatternSyntaxException: A PatternSyntaxException
object is an unchecked exception that indicates a
syntax error in a regular expression pattern.
5. Quote the next meta-character.
^
Match at the beginning
.
Match any character except new line
$
Match at the end, before new line
|
Alternation
()
Grouping
[]
Character class
{}
Match m to n times
+
One or more times
*
Zero or more times
?
Zero or one times
6. t
tab
n
newline
r
return
f
form feed
a
alarm (bell)
e
escape (think troff)
033
octal char
x1B
hex char
x{263a} long hex char
cK
control char
N{name} named Unicode character
(HT, TAB)
(LF, NL)
(CR)
(FF)
(BEL)
(ESC)
(example: ESC)
(example: ESC)
(example: Unicode SMILEY)
(example: VT)
7. Construct
Description
[abc]
a, b, or c (simple class)
[^abc]
Any character except a, b, or c (negation)
[a-zA-Z]
a through z, or A through Z, inclusive (range)
[a-d[m-p]]
a through d, or m through p: [a-dm-p] (union)
[a-z&&[def]]
d, e, or f (intersection)
[a-z&&[^bc]]
a through z, except for b and c: [ad-z]
(subtraction)
[a-z&&[^m-p]]
a through z, and not m through p: [a-lq-z]
(subtraction)
8. Construct
Descriptions
.
Any character (may or may not match line terminators)
d
A digit: [0-9]
D
A non-digit: [^0-9]
s
A whitespace character: [ tnx0Bfr]
S
A non-whitespace character: [^s]
w
A word character: [a-zA-Z_0-9]
W
A non-word character: [^w]
9. Construct
Description
p{Lower}
A lower-case alphabetic character: [a-z]
p{Upper}
An upper-case alphabetic character:[A-Z]
p{ASCII}
All ASCII:[x00-x7F]
p{Alpha}
An alphabetic character:[p{Lower}p{Upper}]
p{Digit}
A decimal digit: [0-9]
p{Alnum}
An alphanumeric character:[p{Alpha}p{Digit}]
p{Punct}
Punctuation: One of !"#$%&'()*+,-./:;<=>?@[]^_`{|}~
p{Graph}
A visible character: [p{Alnum}p{Punct}]
p{Print}
A printable character: [p{Graph}x20]
p{Blank}
A space or a tab: [ t]
p{Cntrl}
A control character: [x00-x1Fx7F]
p{XDigit}
A hexadecimal digit: [0-9a-fA-F]
p{Space}
A whitespace character: [ tnx0Bfr]
11. Construct
Description
p{IsLatin}
A Latin script character (script)
p{InGreek}
A character in the Greek block (block)
p{Lu}
An uppercase letter (category)
p{IsAlphabetic}
An alphabetic character (binary property)
p{Sc}
A currency symbol
P{InGreek}
Any character except one in the Greek block
(negation)
[p{L}&&[^p{Lu}]]
Any letter except an uppercase letter (subtraction)
12.
Greedy quantifiers are considered "greedy" because they force the
matcher to read in, or eat, the entire input string prior to attempting
the first match.
Reluctant quantifiers, however, take the opposite approach: They
start at the beginning of the input string, then reluctantly eat one
character at a time looking for a match. The last thing they try is the
entire input string.
Possessive quantifiers always eat the entire input string, trying once
(and only once) for a match. Unlike the greedy quantifiers,
possessive quantifiers never back off, even if doing so would allow
the overall match to succeed.
13. Greedy
Reluctant
Possessive
Meaning
X?
X??
X?+
X, once or not at
all
X*
X*?
X*+
X, zero or more
times
X+
X+?
X++
X, one or more
times
X{n}
X{n}?
X{n}+
X, exactly n times
X{n,}
X{n,}?
X{n,}+
X, at least n times
X{n,m}+
X, at least n but
not more
than m times
X{n,m}
X{n,m}?
14. Construct
Description
^
The beginning of a line
$
The end of a line
b
A word boundary
B
A non-word boundary
A
The beginning of the input
G
The end of the previous match
Z
The end of the input but for the final terminator, if any
z
The end of the input
15. Capturing groups are a way to treat multiple
characters as a single unit.
int groupCount()
int start()
int end()
String group(int)
Backreferences
17. Index Methods
Index methods provide useful index values that show
precisely where the match was found in the input
string:
public int start(): Returns the start index of the
previous match.
public int start(int group): Returns the start index of
the subsequence captured by the given group during
the previous match operation.
public int end(): Returns the offset after the last
character matched.
public int end(int group): Returns the offset after the
last character of the subsequence captured by the
given group during the previous match operation.
18. Study Methods
Study methods review the input string and return a
boolean indicating whether or not the pattern is found.
public boolean lookingAt(): Attempts to match the input
sequence, starting at the beginning of the region, against
the pattern.
public boolean find(): Attempts to find the next
subsequence of the input sequence that matches the
pattern.
public boolean find(int start): Resets this matcher and then
attempts to find the next subsequence of the input
sequence that matches the pattern, starting at the
specified index.
public boolean matches(): Attempts to match the entire
region against the pattern.
19. Replacement Methods
Replacement methods are useful methods for replacing text in an
input string.
public Matcher appendReplacement(StringBuffer sb, String
replacement): Implements a non-terminal append-and-replace
step.
public StringBuffer appendTail(StringBuffer sb): Implements a
terminal append-and-replace step.
public String replaceAll(String replacement): Replaces every
subsequence of the input sequence that matches the pattern
with the given replacement string.
public String replaceFirst(String replacement): Replaces the first
subsequence of the input sequence that matches the pattern
with the given replacement string.
public static String quoteReplacement(String s): Returns a literal
replacement String for the specified String. This method
produces a String that will work as a literal replacement s in
the appendReplacement method of the Matcher class.