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1. Top results related to : meaning of this symbol in programming

   • Meaning of Symbol %>% in R

     Top Answer

     Answered Jul 25, 2014 · 10 votes

     %>% means whatever you want it to mean, in Base R anyway:

     > %>%Error: unexpected SPECIAL in "%>%"-

     (which means that symbol is not defined.)

     Binary operators are ones that have an input from the left and from the right of the operator, just like *, + etc. You use them as you would mathematically like a * b, which R turns into the call '*'(a, b). R allows you to add your own binary operators via the %foo% syntax, with foo replace by whatever you want, as long as it hasn't already been used by R, which includes %*% and %/% for example.

     `%foo%` <- function(x, y) paste("foo", x, "and foo", y)-> 1 %foo% 2[1] "foo 1 and foo 2"-

     %>% takes on a specific and well-defined meaning once you load the magrittr R package for example, where it is used as a pipe operator might be in a Unix shell to chain together a series of function calls.

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     1/5

   • Meaning of "~" (tilde) symbol in C++?

     Top Answer

     Answered Mar 17, 2011 · 30 votes

     It is the destructor. It gets called when you destroy (reaching end of scope, or calling delete to a pointer to) the instance of the object.

     Other Answers

     Answered Jun 11, 2018 · 27 votes

     In the context you're using it, it defines a destructor.

     In other context such as the following one, it's also called bitwise negation (complement):

     int a = ~100;int b = ~a;

     Output: (ideone)

     -101100

     Other Answers

     Answered Mar 17, 2011 · 7 votes

     ~ signs that it is a destructor and when ever the object goes out of scope, corresponding destructor is called.

     When the destructor is called ?

     Taking an example -

     #include <iostream> class foo{ public: void checkDestructorCall() ; ~foo();};void foo::checkDestructorCall(){ foo objOne; // objOne goes out of scope because of being a locally created object upon return of checkDestructorCall}foo:: ~foo(){ std::cout << "Destructor called \t" << this << "\n";}int main(){ foo obj; // obj goes of scope upon return of main obj.checkDestructorCall(); return 0;}

     Results on my system:

     Destructor called 0xbfec7942 Destructor called 0xbfec7943

     This example just serves to indicate when a destructor is called. But destructor is written only when the class manages resources.

     When class manages resources?

     #include <iostream> class foo{ int *ptr; public: foo() ; // Constructor ~foo() ;};foo:: foo(){ ptr = new int ; // ptr is managing resources. // This assignment can be modified to take place in initializer lists too.}foo:: ~foo(){ std::cout << "Destructor called \t" << this << "\n"; delete ptr ; // Returning back the resources acquired from the free store. // If this isn't done, program gives memory leaks.}int main(){ foo *obj = new foo; // obj is pointing to resources acquired from free store. Or the object it is pointing to lies on heap. So, we need to explicitly call delete on the pointer object. delete obj ; // Calls the ~foo return 0;}

     Results on my system:

     Destructor called 0x9b68008

     And in the program, you posted I don't see a need to write destructor. Hope it helps !

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     2/5

   • Meaning of < > symbol in a mysql query

     Top Answer

     Answered Jul 21, 2016 · 5 votes

     It is the not equal operator. It is same as !=

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     3/5

   • Meaning of the Symbol @@ in SQL Server

     Top Answer

     Answered Mar 27, 2015 · 17 votes

     In SQL Server, symbol @@ is prefixed to global variables.

     The server maintains all the global variables. We cannot declare them.

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     4/5

   • meaning of dollar symbol in regular expression

     Top Answer

     Answered Sep 13, 2015 · 11 votes

     Let's deconstruct your regex (I removed the backslashes that are used to escape characters for the sake of simplification, we will use the dots and slashes as literal here) so we're left with :

     ^..?($|/)

     • ^ means the beginning of a line
     • . then we must have a dot
     • .? then we may or may not have a second dot
     • $|/ and finally, we either end the line (that's what the $ sign does), or continue after a /

     The parenthesis are used to return what's inside it in variables.

     Your regex will detect the following strings :

     ...././../anytext./anytext

     Hope this helped.

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     5/5

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2. codenga.com › pages › guidesThe most important symbols used in programming - Codenga

   codenga.com › pages › guides

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   Jul 2, 2023 · From semicolons indicating the end of instructions to braces delineating code blocks, and from parentheses specifying function arguments to mathematical symbols facilitating arithmetic operations, each symbol plays a crucial role in shaping the functionality and clarity of our programs.

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4. medium.com › p-labs › what-symbols-are-basicallyWhat Symbols are Basically Used in Programming? - Medium

   medium.com › p-labs › what-symbols-are-basically

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   • Brackets or Parentheses () Parentheses have a special purpose. This is frequently used to control the order of operations in an expression and to supply pr enclose parameters to a function or method.
   • Curly Braces or Braces {} Braces are use to group statements and declarations and major part of the C and C++ programming language. In statements, the braces comes in a if statement, a loop (while, for, and do/while), functions, conditional statements, or switch statements.
   • Square Brackets [] Square brackets are used to define the use of an array or we can say to index elements in an array and also strings. In array, indexes start at zero 0, so that element one 1 of an array is array [0] and [9] is an element of 10.
   • Semicolon ; This symbol lets the compiler know that it has reached the end of a command or statement. If in a sentence of a story, this would be like a dot, to simply end the line of code.

5. www.geeksforgeeks.org › operators-programmingWhat are Operators in Programming? - GeeksforGeeks

   www.geeksforgeeks.org › operators-programming

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   Feb 21, 2024 · Operators in programming are essential symbols that perform operations on variables and values, enabling tasks like arithmetic calculations, logical comparisons, and bitwise manipulations. In this article, we will learn about the basics of operators and their types.

6. www.programiz.com › c-programming › c-operatorsOperators in C - Programiz

   www.programiz.com › c-programming › c-operators

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   • C Arithmetic Operators
   • C Increment and Decrement Operators
   • C Assignment Operators
   • Other Operators

   An arithmetic operator performs mathematical operations such as addition, subtraction, multiplication, division etc on numerical values (constants and variables).

   See full list on programiz.com

   C programming has two operators increment ++ and decrement --to change the value of an operand (constant or variable) by 1. Increment ++ increases the value by 1 whereas decrement --decreases the value by 1. These two operators are unary operators, meaning they only operate on a single operand.

   See full list on programiz.com

   An assignment operator is used for assigning a value to a variable. The most common assignment operator is =

   See full list on programiz.com

   Comma Operator

   Comma operators are used to link related expressions together. For example:

   The sizeof operator

   The sizeofis a unary operator that returns the size of data (constants, variables, array, structure, etc).

   Example 6: sizeof Operator

   Output Other operators such as ternary operator ?:, reference operator &, dereference operator * and member selection operator ->will be discussed in later tutorials.

   See full list on programiz.com

7. en.wikipedia.org › Operator_(computer_programming)Operator (computer programming) - Wikipedia

   en.wikipedia.org › Operator_(computer_programming)

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   In computer programming, operators are constructs defined within programming languages which behave generally like functions, but which differ syntactically or semantically. Common simple examples include arithmetic (e.g. addition with + ), comparison (e.g. " greater than " with > ), and logical operations (e.g. AND , also written && in some ...

   Programming Language	Nonalphanumeric Operator Symbols	Alphanumeric Operator Symbols	Prefix
   ALGOL 68	+* ** * / % %* %× - + < <= >= > = /= & ...	not abs arg bin entier leng level odd ...	Yes
   APL	+ - × ÷ ⌈ ⌊ * ⍟ | ! ○ ~ ∨ ∧ ⍱ ⍲ < ≤ = ≥ > ...	Alphanumeric symbols need a ⎕ before the ...	Yes (first-order functions only)
   C	() [] -> . ! ~ ++ -- + - * & / % << >> < ...	sizeof	Yes
   C++ ( more )	() [] -> . ! ~ ++ -- + - * & / % << >> < ...	sizeof typeid new delete throw decltype ...	Yes

   See full list on en.wikipedia.org

8. realpython.com › python-operators-expressionsOperators and Expressions in Python – Real Python

   realpython.com › python-operators-expressions

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   Sep 18, 2023 · In Python, operators are special symbols, combinations of symbols, or keywords that designate some type of computation. You can combine objects and operators to build expressions that perform the actual computation. So, operators are the building blocks of expressions, which you can use to manipulate your data.

9. People also ask

   What symbols are used in programming?

   • There are several symbols used, but these are the basic symbols that used in programming: 1. Brackets or Parentheses () Parentheses have a special purpose. This is frequently used to control the order of operations in an expression and to supply pr enclose parameters to a function or method. 2. Curly Braces or Braces {}

   What Symbols are Basically Used in Programming? - Medium

   medium.com/p-labs/what-symbols-are-basically-used-in-programming-b6c3143f97db

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   Why are symbols important in coding?

   • Symbols in programming are like the punctuation marks in a written language—they give structure, meaning, and clarity to our code. Whether you’re learning through platforms like codedamn or diving into documentation, a solid grasp of these symbols is crucial for efficient and error-free coding. Basic Symbols and Their Functions

   Popular Coding Symbols in Programming Languages - codedamn

   codedamn.com/news/programming/popular-coding-symbols-in-programming-languages

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   What is a semicolon symbol & why is it important?

   • Let’s explore some of these symbols and understand their importance. The semicolon is a critical symbol in many programming languages, including C, C++, and Java. It’s used to mark the end of a statement, much like a period in a sentence.

   Popular Coding Symbols in Programming Languages - codedamn

   codedamn.com/news/programming/popular-coding-symbols-in-programming-languages

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   Why do Python operators use keywords instead of odd symbols?

   • These two Python operators are keywords instead of odd symbols. This is part of Python’s goal of favoring readability in its syntax. Here’s an example of two variables, x and y, that refer to objects that are equal but not identical: In this example, x and y refer to objects whose value is 1001. So, they’re equal.

   Operators and Expressions in Python – Real Python

   realpython.com/python-operators-expressions/

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10. codedamn.com › news › programmingPopular Coding Symbols in Programming Languages - codedamn

    codedamn.com › news › programming

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    Nov 26, 2023 · Symbols in programming are like the punctuation marks in a written language—they give structure, meaning, and clarity to our code. Whether you’re learning through platforms like codedamn or diving into documentation, a solid grasp of these symbols is crucial for efficient and error-free coding.