calorie adder

The method of curry is to transform a function that accepts multiple parameters into a function that takes a single parameter, and returns a new function that accepts the parameters of the original function. Here are some examples to help you understand.function adder (num) {return function (x) {return num + x;}}var add5 = adder (5);var add6 = adder (6);Print (AD

In computer science, curry is the technique of transforming a function that accepts multiple parameters into a function that takes a single parameter (the first parameter of the original function) and returns a new function that accepts the remaining parameters and returns the result. --see Wikipedia curry is the introduction of some parameters in advance to get a simple function. But the pre-passed parameters are kept in the closures, so there are some peculiar features. Example: var

first parameters (arrays) of map, but it may have no significance for code other than map. Therefore, we do not need to define a function for it. Anonymous functions are enough.KerihuaCurialization converts a function that accepts multiple parameters into a function that accepts a single parameter (the first parameter of the initial function, and return the technology of the new function that accepts the remaining parameters and returns results. This sentence is a bit difficult. We can use exam

other strange nouns that are not suitable for beginners). Here is a simple example to illustrate.>>> def ADDX (x): ... def adder (y): return x + y ... return adder...>>> c = ADDX (8) >>> Typ E (c) This simple code and definition is used to illustrate closures: if in an intrinsic function: Adder (y) is the intrinsic function that references variables in the outer

function (num) { console.log (num); }} var f = new Foo (9); F (); UndefinedIn fact, the above usage, the jargon called function currying, is to transform a function that accepts multiple parameters into a function that takes a single parameter (the first parameter of the initial function) and returns a new function that accepts the remaining parameters and returns the result. In essence, the features that can be cached by closures are also used, such as:var

get a simple function. But the parameters that are passed in are stored in the closure, so there are some peculiar features. Like what: var adder = function (num) {return function (y) {return num + y; } } var inc = Adder (1); var dec = adder (-1) Here the Inc/dec two variables are in fact two new functions, which can be called by parenthese

the new function of the technology. It also uses the features that the closures can cache, such as: Copy Code code as follows: var adder = function (num) { return function (y) { return num+y; }; }; var inc = Adder (1);var dec = adder (-1);Inc, Dec is now two new functions that will pass in the parameter values (+/‐) 1Alert (inc (99));

, including unary_negate, unary_compose, and binary_compose, which are used to combine function objects. Finally, STL includes many predefined function objects, including operators (plus, minus, multiplies, divides, modulus, and negate), arithmetic comparison (equal_to, not_to _to, greater, less, greater_equal and less_equal), and logical operations (logical_and, logical_or, and logical_not ). In this way, you can combine complex operations without manually writing new function objects. ExampleF

closure is to directly assign it to a variable: def printer = {line -> println line} Return Value of a Method def Closure getPrinter(){return {line -> println line}} Curly braces indicate that a new closure object is built. Tip: brackets can be used to indicate that a new closure object or groovy code block has been constructed. The code block can be class, interface, static, object initialization code, and method body, it can also appear together with groovy keywords (if, else, synchronzied,

] = value Else:print attr raise Attributeerror, attr + ' not allowed ' X = accesscontr OL () X.age = #call __setattr__ x.name = ' Wang ' #raise exception class Empty:def __getattr__ (self,attrname): if attrname = = ' age ': return else:raise attributeerror,attrname X = Empty () print X.age #call__getattr __ Class Accesscontrol:def __setattr__ (self, attr, value): if attr = = ' age ': # self.attrname = value loops! SELF.__DICT__[ATTR] = value Else:print attr raise Attributeerror, attr +

, the function return value in the following example adder is a closure. Each closure is bound to its own sum variable.package mainimport "fmt"func adder() func(int) int { sum := 0 //这是闭包的函数体之外的变量，它也被绑定在闭包内了 return func(x int) int { //这是闭包 sum += x return sum }}func main() { pos, neg := adder(), adde