formal parameters - definizione. Che cos'è formal parameters
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Cosa (chi) è formal parameters - definizione

IN COMPUTER PROGRAMMING, SPECIAL KIND OF VARIABLE THAT HOLDS DATA THAT WAS PASSED AS AN ARGUMENT TO A SUBROUTINE
Argument (computer science); Argument (programming); Parameter (programming); Formal parameter; Actual parameter; Parameters (computer science); Formal parameters; Function parameter; Argument (computing); Parameter (computer science); Parameter (computing); Output parameter; Out parameter; Return parameter; Argument (computer programming); Input parameter; Input value; Output value; Actual parameters

Courant–Snyder parameters         
  • One dimensional position-momentum plot, showing the beam ellipse described in terms of the Courant–Snyder parameters.
SET OF QUANTITIES IN ACCELERATOR PHYSICS
Twiss parameter; Draft:Courant Snyder Parameters; Draft:Courant Snyder parameters; Twiss parameters; Courant Snyder parameters; Courant-Snyder parameters; CS parameters; CS parameter
In accelerator physics, the Courant–Snyder parameters (frequently referred to as Twiss parameters or CS parameters) are a set of quantities used to describe the distribution of positions and velocities of the particles in a beam. When the positions along a single dimension and velocities (or momenta) along that dimension of every particle in a beam are plotted on a phase space diagram, an ellipse enclosing the particles can be given by the equation:
Impedance parameters         
  • The equivalent circuit for Z-parameters of a two-port network.
  • reciprocal]] two-port network.
PARAMETERS TO DESCRIBE BEHAVIOUR OF ANY LINEAR ELECTRICAL NETWORK WITH A NUMBER OF PORTS
Z-parameters; Z parameters; Impedance matrix; Z-parameter
Impedance parameters or Z-parameters (the elements of an impedance matrix or Z-matrix) are properties used in electrical engineering, electronic engineering, and communication systems engineering to describe the electrical behavior of linear electrical networks. They are also used to describe the small-signal (linearized) response of non-linear networks.
Parameter (computer programming)         
In computer programming, a parameter or a formal argument is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine. These pieces of data are the values of the arguments (often called actual arguments or actual parameters) with which the subroutine is going to be called/invoked.

Wikipedia

Parameter (computer programming)

In computer programming, a parameter or a formal argument is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine. These pieces of data are the values of the arguments (often called actual arguments or actual parameters) with which the subroutine is going to be called/invoked. An ordered list of parameters is usually included in the definition of a subroutine, so that, each time the subroutine is called, its arguments for that call are evaluated, and the resulting values can be assigned to the corresponding parameters.

Unlike argument in usual mathematical usage, the argument in computer science is the actual input expression passed/supplied to a function, procedure, or routine in the invocation/call statement, whereas the parameter is the variable inside the implementation of the subroutine. For example, if one defines the add subroutine as def add(x, y): return x + y, then x, y are parameters, while if this is called as add(2, 3), then 2, 3 are the arguments. Note that variables (and expressions thereof) from the calling context can be arguments: if the subroutine is called as a = 2; b = 3; add(a, b) then the variables a, b are the arguments, not the values 2, 3. See the Parameters and arguments section for more information.

The semantics for how parameters can be declared and how the (value of) arguments are passed to the parameters of subroutines are defined by the evaluation strategy of the language, and the details of how this is represented in any particular computer system depend on the calling convention of that system. In the most common case, call by value, a parameter acts within the subroutine as a new local variable initialized to the value of the argument (a local (isolated) copy of the argument if the argument is a variable), but in other cases, e.g. call by reference, the argument variable supplied by the caller can be affected by actions within the called subroutine.