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The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...
The expression a & b == 7 is syntactically parsed as a & (b == 7) whereas the expression a + b == 7 is parsed as (a + b) == 7. This requires parentheses to be used more often than they otherwise would. Historically, there was no syntactic distinction between the bitwise and logical operators. In BCPL, B and early C, the operators && || didn't ...
In computer science and software programming, a value is the representation of some entity that can be manipulated by a program. The members of a type are the values of that type. [1] The "value of a variable" is given by the corresponding mapping in the environment. [2]
In C and C++, volatile is a type qualifier, like const, and is a part of a type (e.g. the type of a variable or field). The behavior of the volatile keyword in C and C++ is sometimes given in terms of suppressing optimizations of an optimizing compiler: 1- don't remove existing volatile reads and writes, 2- don't add new volatile reads and writes, and 3- don't reorder volatile reads and writes.
Short-circuit evaluation, minimal evaluation, or McCarthy evaluation (after John McCarthy) is the semantics of some Boolean operators in some programming languages in which the second argument is executed or evaluated only if the first argument does not suffice to determine the value of the expression: when the first argument of the AND function evaluates to false, the overall value must be ...
L-value, L value or lvalue may refer to: In astronomy, a measure of brightness of a lunar eclipse on the Danjon scale; L-value (computer science), denoting an object to which values can be assigned; In number theory, the value of an L-function; In space physics, the value assigned to an L-shell, a particular set of planetary magnetic field lines
conditional statement (with other variants) IF (A) = 2 assignment to a subscripted variable named IF; As spaces were optional up to Fortran 95, a typo could completely change the meaning of a statement: DO 10 I = 1,5 start of a loop with I running from 1 to 5; DO 10 I = 1.5 assignment of the value 1.5 to the variable DO10I
Measurement Studio is a commercial integrated suite UI controls and class libraries for use in developing test and measurement applications. The analysis class libraries provide various digital signal processing, signal filtering, signal generation, peak detection, and other general mathematical functionality.