Python is a great language, but there are occasions where we need access to low level operations or connect with some database driver written in C. With the FFI(Foreign function interface) we can connect Python with other languages like C, C++ and even the new Rust. There are some alternatives to achieve this goal, Native Extensions, Ctypes and CFFI. I'll compare this three ways of extending Python.
Automatic Variables
extern variables
static variables
register variables
Examples of above listed variables.
Summary of storage place, Initial value, scope and life of variables.
lFuzzer - Learning Input Tokens for Effective FuzzingBjörn Mathis
Modern fuzzing tools like AFL operate at a lexical level: They explore the input space of tested programs one byte after another. For inputs with complex syntactical properties, this is very inefficient, as keywords and other tokens have to be composed one character at a time. Fuzzers thus allow to specify dictionaries listing possible tokens the input can be composed from; such dictionaries speed up fuzzers dramatically. Also, fuzzers make use of dynamic tainting to track input tokens and infer values that are expected in the input validation phase. Unfortunately, such tokens are usually implicitly converted to program specific values which causes a loss of the taints attached to the input data in the lexical phase.
In this paper we present a technique to extend dynamic tainting to not only track explicit data flows but also taint implicitly converted data without suffering from taint explosion. This extension makes it possible to augment existing techniques and automatically infer a set of tokens and seed inputs for the input language of a program given nothing but the source code. Specifically targeting the lexical analysis of an input processor, our lFuzzer test generator systematically explores branches of the lexical analysis, producing a set of tokens that fully cover all decisions seen. The resulting set of tokens can be directly used as a dictionary for fuzzing. Along with the token extraction seed inputs are generated which give further fuzzing processes a head start. In our experiments, the lFuzzer-AFL combination achieves up to 17% more coverage on complex input formats like JSON, LISP, tinyC, and JavaScript compared to AFL.
How to do Test-Driven Development in C illustrated by solving a Recently Used List kata.
Similar slides can be found here http://www.olvemaudal.com/talks
what are loop in general
what is loop in c language
uses of loop in c language
types of loop in c language
program of loop in c language
syantax of loop in c language
Python is a great language, but there are occasions where we need access to low level operations or connect with some database driver written in C. With the FFI(Foreign function interface) we can connect Python with other languages like C, C++ and even the new Rust. There are some alternatives to achieve this goal, Native Extensions, Ctypes and CFFI. I'll compare this three ways of extending Python.
Automatic Variables
extern variables
static variables
register variables
Examples of above listed variables.
Summary of storage place, Initial value, scope and life of variables.
lFuzzer - Learning Input Tokens for Effective FuzzingBjörn Mathis
Modern fuzzing tools like AFL operate at a lexical level: They explore the input space of tested programs one byte after another. For inputs with complex syntactical properties, this is very inefficient, as keywords and other tokens have to be composed one character at a time. Fuzzers thus allow to specify dictionaries listing possible tokens the input can be composed from; such dictionaries speed up fuzzers dramatically. Also, fuzzers make use of dynamic tainting to track input tokens and infer values that are expected in the input validation phase. Unfortunately, such tokens are usually implicitly converted to program specific values which causes a loss of the taints attached to the input data in the lexical phase.
In this paper we present a technique to extend dynamic tainting to not only track explicit data flows but also taint implicitly converted data without suffering from taint explosion. This extension makes it possible to augment existing techniques and automatically infer a set of tokens and seed inputs for the input language of a program given nothing but the source code. Specifically targeting the lexical analysis of an input processor, our lFuzzer test generator systematically explores branches of the lexical analysis, producing a set of tokens that fully cover all decisions seen. The resulting set of tokens can be directly used as a dictionary for fuzzing. Along with the token extraction seed inputs are generated which give further fuzzing processes a head start. In our experiments, the lFuzzer-AFL combination achieves up to 17% more coverage on complex input formats like JSON, LISP, tinyC, and JavaScript compared to AFL.
How to do Test-Driven Development in C illustrated by solving a Recently Used List kata.
Similar slides can be found here http://www.olvemaudal.com/talks
what are loop in general
what is loop in c language
uses of loop in c language
types of loop in c language
program of loop in c language
syantax of loop in c language
CV Workshop - IDinLondon - 11th November 2014, Adam Bolton.Adam Bolton
A CV workshop that was delivered to the 700+ strong group of IDinLondon.
Topics covered included the look and feel of your CV, along with tips on how to improve yourself and sell the skills that you have.
Can also be called a Resume if people are searching on that term!
Oh Crap, I Forgot (Or Never Learned) C! [CodeMash 2010]Chris Adamson
Abstract: Chances are you code in a language that's either descended from C, inspired by C, or run in an interpreter that itself is written in C. Still... do you actually know how to code in C? Despite its long-standing position as a sort of "lingua franca", an agreed-upon common language, more and more developers are putting together successful, satisfying careers, without ever learning this seminal language. But what if you have to call into C code from your favorite scripting language, or use APIs like OpenGL that are written to be called from C? Many developers find C very challenging, particularly its manual memory-management and other low-level concerns. In this session, we'll show you why you shouldn't be afraid of C, how you can use the skills you already have from the languages you code in today, and how to master structs, enums, typedefs, malloc(), free(), and the rest of C's sharp edges. Examples will be from the point-of-view of the C-skewing iPhone SDK, but will be designed to be broadly applicable and platform-agnostic.
Esoft Metro Campus - Programming with C++
(Template - Virtusa Corporate)
Contents:
Overview of C++ Language
C++ Program Structure
C++ Basic Syntax
Primitive Built-in types in C++
Variable types
typedef Declarations
Enumerated Types
Variable Scope
Constants/Literals
Storage Classes
Operators
Control Constructs
Functions
Math Operations in C++
Arrays
Multi-dimensional Arrays
Strings
C++ Pointers
References
Date and Time
Structures
Basic Input / Output
Classes and Objects
Inheritance
Overloading
Polymorphism
Interfaces
Files and Streams
Exception Handling
Dynamic Memory
Namespaces
Templates
Preprocessor
Multithreading
Perl is a programming language which can be used for a large variety of tasks. A typical simple use of Perl would be for extracting information from a text file and printing out a report or for converting a text file into another form. But Perl provides a large number of tools for quite complicated problems, including systems programming.
Programs written in Perl are called Perl scripts, whereas the term the perl program refers to the system program named perl for executing Perl scripts.
If you have used shell scripts or awk or sed or similar (Unix) utilities for various purposes, you will find that you can normally use Perl for those and many other purposes, and the code tends to be more compact. And if you haven't used such utilities but have started thinking you might have need for them, then perhaps what you really need to learn is Perl instead of all kinds of futilities.
Perl is implemented as an interpreted (not compiled) language. Thus, the execution of a Perl script tends to use more CPU time than a corresponding C program, for instance. On the other hand, computers tend to get faster and faster, and writing something in Perl instead of C tends to save your time.
Why Perl ?
Perl is still used in today's world as like
data mining / statistical analysis - the perl regex engine, even if slightly outdated, (PCRE, a spinned off library, tops it up in any possibile way and it's the default PHP engine) is still good for simple analysis
UNIX system administration - Perl shall always be installed on UNIX.
You can count on it being readily available even on Mac OS X.
network prototyping - many core network experts learned Perl when it was all the rage; and they still do their proofs-of-concept with it.
security - many security experts, too, need fast prototyping. (and fast automated fixes) Perl can, and does, cover for that.
Benefits of Perl Certification-
The Perl Programming certificate series comprises four courses that take students from a complete beginner to an advanced level that includes use of reusable code and creation of objects for network-based applications.
Upon completion of this certificate program, you will be able to:
Create Perl scripts that use variables, conditionals, interpolation, arrays, lists, hashes, subroutines, loops, formatted printing, data mapping, and sorting.
Implement Perl scripts that work with external files.
Utilize regular expressions, exception handling, multiprocessing, objects, and complex data structures.
Develop applications that perform complex text processing, web page scraping and form handling, and database interaction.
Navigate third-party code in the Comprehensive Perl Archive Network (CPAN) and use it in your own applications.
Contact us today to know more about Perl.
www.vibranttechnologies.co.in
With PHP5.3.3 recently released I really feel it is time that php developers are taking namespaces seriously. If you don’t I guarantee you will be out of a job within five years. Namespaces are a fundamental part of the future of PHP. The talk explains the usage on importing third party libraries, using it in your own code and aliasing. The full works.
Similar to principles of programming languages (20)
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
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.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
3. Language C C++ Java UNIX Perl
Intended use Application,
system,general
purpose, low-
level operations
Application,
system
Application,
business, client-
side, general,
server-side, Web
File
manipulation,print
-ing text Application,
scripting, text
processing, Web
Imperative Yes Yes Yes No Yes
Object
oriented
No Yes Yes No Yes
Functional No Yes No No Yes
Procedural Yes Yes No No Yes
Standardized
?
1989, ANSI
C89,ISO
C90,ISO
C99,ISO C11
1998, ISO/IEC
1998, ISO/IEC
2003, ISO/IEC
2011
De facto
standard via
Java Language
Specification
Filesystem
Hierarchy
Standard,
POSIX standard
No
5. Language Developer Year Derived from
UNIX
Ken Thompson,
Dennis Ritchie,
Douglas McIlroy,
and Joe Ossanna.
1969 Multics
C Dennis Ritchie 1972 B
C++ Bjarne Stroustrup 1979 C
Perl Larry Wall 1987 C
Java James Gosling 1991 C++
9. Language
Characteristic
CONCISE DATATYPES
Illustration
C Truth value by some other
data type
No boolean data type
int flag =1;
C++ Boolean data type bool flag =true;
Java Boolean data type boolean flag=false;
Perl No boolean data type $flag=1;
UNIX No boolean data type flag=1
10. Language Characteristic
SYNTAX DESIGN
Illustration
C
Compound statements
Curly braces used.
Form & meaning
Meaning of static depends
on context
C++ Understandable if C is
known
Java Understandable if C/C++is
known
Perl Compound statements
Curly braces used.
Form & meaning
Prior knowledge is required
Eg:split,shift,unshift etc
UNIX No curly braces
Prior knowledge is required
for var in 0 1 2 3 4 5 6 7 8
do
echo $var
done
Eg:grep
14. Language Characteristic
EXCEPTION HANDLING
Illustration
C No exception handling
C++ Exception handling exists try
{
// protected code
}catch( ExceptionName e )
{
// code to handle
ExceptionName exception
}
Java Exception handling exists try { //Protected code }
catch(ExceptionType1 e1) {
//}
finally { //The finally block
always executes. }
Perl
Exception handling exists chdir('/etc') or warn "Can't
change directory";
chdir('/etc') or die "Can't
change directory";
UNIX No exception handling
15. Language
Characteristic
ALIASING
Illustration
C Aliasing using pointers int A[10];
int *p= A;
C++ Aliasing using reference
variables
float total=100;
float &sum=total;
Java
Aliasing using object
references
Square box1 = new Square
(0, 0, 100, 200);
Square box2 = box1;
Perl Aliasing using reference
variables
$r=@arr;
UNIX Giving a name for a
command
alias dir=ls
17. Language Type binding Storage binding
C Static binding
int a;
Local variables are stack
dynamic by default.
Static variables are
declared using keyword
static
Explicit heap dynamic
variables using malloc()
C++ Static binding
int a;
Local variables are stack
dynamic by default.
Static variables are
declared using keyword
static
Explicit heap dynamic
variables using new
Java
18. language Type binding Storage Binding
Perl Dynamic binding
$a=5;
implicit declarations and
explicit declarations with
static scoping, lots of heap
bindings (for strings, arrays,
etc.), run-time memory
manager does garbage
collection, implicit allocation
and de-allocation
UNIX Dynamic binding
a=5
Local variables are stack
dynamic by default.
20. Language Primitive Derived User defined
C int, float, char,
double, void
pointer,function,
array,structure,
union
structure, union,
enum, typedef
C++ void,char,int,float,
double,bool
Array,
function,pointer,
reference
structure, union,
enum, typedef,
class
Java int, float, long,
double, char
,boolean,short,byte
Array,
function,pointer,
reference
structure, union,
enum, typedef,
class,sequence
Perl Scalar, hash, array function No user defined
datatypes
UNIX No primitive
datatypes
Array,function No user defined
datatypes
22. VARIABLE & CONSTANT DECLARATION
LANGUAGE VARIABLE CONSTANT TYPE SYNONYM
C
type name «= initial
value»;
enum{ name = value }; typedef type synonym;
C++
type name «= initial
value»;
const type name = value;
typedef type synonym;
Java
type name
«= initial_value»;
final type name = value; NA
UNIX
name=initial_value NAME ="Zara Ali"
readonly NAME
NA
Perl
«my» $name
«= initial_value»;
use
constant name => value;
NA
30. CONDITIONAL STATEMENTS
Language if else if case conditional
operator
C if (condition)
{instructions}
«else
{instructions}»
if (condition)
{instructions}
else if
(condition)
{instructions}
...
«else
{instructions}»
switch
(variable)
{case case1: in
structions
«break;»
...
«default: instru
ctions»}
condition?
valueIfTrue :
valueIfFalse
C++
Java
UNIX if condition-
then
expression
«else
expression»
fi
if condition-
then
expression
elif condition-
then
expression
«else
expression»
fi
case "$variable
" in
"$condition1" )
command;;
"$condition2" )
command;;
esac
31. Language If Else if Case
Conditional
operator
Perl if (condition)
{instructions}
«else
{instructions}»
or
unless (not
condition)
{instructions}
«else
{instructions}»
if (condition)
{instructions}
elsif (condition)
{instructions}
...
«else
{instructions}»
or
unless
(notcondition)
{instructions}
elsif (condition)
{instructions}
...
«else
{instructions}»
use feature
"switch";
...
given (variable)
{when (case1)
{ instructions }
...
«default
{ instructions }»}
condition?
valueIfTrue :
valueIf-
False
32. LOOP STATEMENTS
Language while Do while For foreach
C
while
(condition) {instructi
ons }
do { instructions }
while (condition)
for («type»
i = first; i <= last;
++i) { instructions }
NA
C++ «std::»
for_each(start,end,f
unction)
Java for (type item : set)
{instructions }
UNIX while [condition
] do
Instructions
done
or
until [notconditi
on] do
Instructions
done
NA for
((i = first; i <= last;
++i))
do
Instructions
done
for item in set
do
Instructions
done
33. Language While Do while For foreach
Perl
while (condition)
{instructions }
or
until
(notcondition) {instru
ctions }
do { instructions }
while (condition)
or
do { instructions }
until (notcondition)
for«each»
«$i»(first ..last)
{instructions }
or
for ($i = first; $i
<= last; $i++)
{instructions }
for«each»
«$item» (set)
{instructions }
34. OTHER CONTROL FLOW STATEMENTS
Language Exit
block(break)
Continue Label Branch(goto)
C break; continue; label: goto label;
C++ break; continue; label:
goto label;
Java break «label»; continue «label»; label: NA
UNIX
break «levels»; continue «levels»; NA NA
Perl last «label»; next «label»; label: goto label;