Search results
Results from the WOW.Com Content Network
In C, the assignment operator is a single equals sign ("=") while the equality operator is a pair of equals signs ("=="). In R, the assignment operator is basically <-, as in x <- value, but a single equals sign can be used in certain contexts.
The category is about assignment in mathematics and computing. Pages in category "Assignment operations" ... Assignment operator (C++) Augmented assignment; C ...
In R, the generally preferred assignment operator is an arrow made from two characters <-, although = can be used in some cases. [ 35 ] > x <- 1 : 6 # Create a numeric vector in the current environment > y <- x ^ 2 # Create vector based on the values in x. > print ( y ) # Print the vector’s contents.
The semantics of operators particularly depends on value, evaluation strategy, and argument passing mode (such as Boolean short-circuiting). Simply, an expression involving an operator is evaluated in some way, and the resulting value may be just a value (an r-value), or may be an object allowing assignment (an l-value).
In many imperative programming languages, the assignment operator is defined to be right-associative, and assignment is defined to be an expression (which evaluates to a value), not just a statement. This allows chained assignment by using the value of one assignment expression as the right operand of the next assignment expression.
All the operators (except typeof) listed exist in C++; the column "Included in C", states whether an operator is also present in C. Note that C does not support operator overloading. When not overloaded, for the operators && , || , and , (the comma operator ), there is a sequence point after the evaluation of the first operand.
In computer science, pseudocode is a description of the steps in an algorithm using a mix of conventions of programming languages (like assignment operator, conditional operator, loop) with informal, usually self-explanatory, notation of actions and conditions.
Dennis Ritchie, creator of the C language, said of the precedence in C (shared by programming languages that borrow those rules from C, for example, C++, Perl and PHP) that it would have been preferable to move the bitwise operators above the comparison operators. [42]