olap functions

Python is encapsulated into a dictionarydefFun_test6 (a,**Kvavgs):Print(a)Print(Kvavgs) Fun_test6 ("a", x="b", y="C", z="D")#Multiple return Valuesdeffun_test7 ():return0,"a",("b","C"),["D","e","e"],{"F","g"},{"name":"Zhang"," Age": 20}res=fun_test7 ()#This returns the returned result into a tuplePrint(RES)#recursive functions that function themselves to call themselves#recursive functions must have a few

, because in subsequent calls, the instance is not known. However, instance functions can access class variables.4. Modify the range of variables class is class class is class is a static methodIs the result of the output in the function1. class is class class is class isclass variableThis is the result of function2, and the class variable has changed.If you modify a variable through a class method, the class variable in all instances is modified,

1 normal function: is a global function, not restricted by specific classes and objects, can be called directly. For example: void printf () { printf ("Hello World"); } 2 Ordinary member function: C + + Normal member function is essentially a generic function that contains the this pointer to a specific object, that is, the normal member function of the C + + class implicitly contains a this pointer to the current object. For example: Define a class: Class MyClass { Public void Myprint () { prin

Numeric functions: ABS (m)Absolute Value of mMoD (m, n) m remainder after N DivisionPower (m, n) M's n powerRound (M [, N]) the value of M rounded to N digits after the decimal point (N defaults to 0)Trunc (M [, N]) m truncates the value of N decimal places (N defaults to 0)-------------------------------------------------------------------------------- Character functions: Initcap (ST) returns the first le

6.3. High-order functions, common built-in functions, and 6.3 Built-in high-order functionsHigher-order functions: You can pass a function as a parameter to another function; Returns a function. # The return value is the function sum = lambda x, y: x + ysub = lambda x, y: x-ycalc_dict = {"+": sum ,"-": sub} def calc (x): return calc_dict [x] print (calc (

right, that is, starting from the fourth position on the right and starting from 1, and then the second occurrence of the word A is still from the left, that is, a S d f a S D f a, but the number is from the right.9 8 7 6 5 4 3 2 1Select InStr (' Asdfasdfasdfasdf ', ' asdf ', -3,1) from dual; --13Starting from right-to-left 3rd, the 1th occurrence of the index position of ' asdf '(5) Uppercase and lowercase conversionsSelect Upper (' Asdfasgas '), lower (' Ghjajdgj ') from dual;Select Lower (en

The pointer to the function is to use the pointer to save the address of the function as follows: Void sub (int A, int B); int _ tmain (INT argc, _ tchar * argv []) {void (* t_vp) (int A, int B ); // define the function pointer t_vp = sub; // assign a value to the function pointer (* t_vp) (5, 6); // call the function pointer system ("pause"); Return 0 ;} void sub (int A, int B) {cout To assign a value to a function pointer, you need to explain the following step: In t_vp = sub, sub is the fu

Full text See http://www.eefocus.com/article/09-04/71618s.html The central idea is: thread-safe functions: Generally speaking, a function is called thread-safe, and when and only repeatedly invoked by multiple concurrent threads, it always produces the correct result. Reentrant: When a program executes to a function foo (), receives the signal, then pauses the currently executing function, goes to the signal processing function, and this signal p

MySQL functions-other functions, mysql Functions IF (expr, v1, v2) expr expression is true, v1 is returned; otherwise, v2 is returned. IFNULL (v1, v2) If v1 is NULL, v2 is returned. If v1 is not NULL, v1 is returned. CASE expr WHEN v1 THEN r1 [WHEN v2 THEN r2] [...] [ELSE m] END If expr is equal to the value in v1.v2..., return r1, r2. After THEN. Otherwise, re

'name': i[0],7 'Sex': i[1],8 ' Age': Int (i[2]),9 'Salary': Int (i[3])Ten } One data.append (DIC) A - #[{' Name ': ' Egon ', ' sex ': ' Male ', ' age ': ' Salary ' : - #{' name ': ' Alex ', ' sex ': ' Male ', ' age ': $, ' salary ': 30000}, \ the #{' name ': ' Wupeiqi ', ' sex ': ' Female ', ' age ': +, ' salary ': 20000},\ - #{' name ': ' Yuanhao ', ' sex ': ' Female ', ' age ': +, ' salary ': 10000}] - -Res=max (data,key=Lambdax:x['Sal

Common Functions A common function (UFUNC) is a function of performing element-level operations on data in Ndarray # example Array a = Np.array ([ -1,2.1,0.2,2.6,9.1]) # [ -1. 2.1 0.2 2.6 9.1] b = Np.arange (1,len (a) +1) # [1 2 3 4 5]A unary function function Description Example Results ABS, Fabs Calculates the absolute value of integers, floating-point numbers, and complex numbers, and fo

, returns twice times the wage (2*sal), if it is 30, returns 3 times times the wage, if not, then returns half the wageSelect Ename,deptno,sal,Case DeptnoWhen Ten then 1*salWhen 2*salWhen 3*salelse SAL/2Endfrom EMP;②decode:decode (EXPR1,EXPR2,EXPR3,.........)Eg: Judge Deptno, if it is department 10th, returns one-fold pay (1*sal), or 0 if not.Sql>select Ename,deptno,sal,decode (deptno,10,sal,0) from EMP;Eg: to judge Deptno, if it is Department 10th, return one-fold salary (1*sal), return 30 time

[Cpp]/** Copyright (c) 2013, computer College, Yantai University* All rights reserved.* File name: test. cpp* Author: Fan Lulu* Completion date: January 1, April 15, 2013* Version: v1.0** Input Description: None* Problem description:* Program output:* Problem analysis:* Algorithm Design: omitted*/# Include # Include Using namespace std;Class CPoint{Private:Double x; // abscissaDouble y; // ordinatePublic:CPoint (double xx = 0, double yy = 0): x (xx), y (yy ){}Double distance1 (CPoint );Friend do

# Include # Include Using namespace STD; Constdoublepi= 3.141593; Classcircle; // Classcalculate //{ // Public: // Doubledistance (circle P1, circle p2 ); //}; Classcircle{PRIVATE:Doublex, Y, R;Public:// ConstructorCircle (double xx = 0, double YY = 0, double RR = 0){X = xx; y = YY; r = RR;} // DisplayVoiddisplay (){Cout Cout Cout Cout } // AreaDoublearea (){Returnpi * r * R;} // PerimeterDoublecircular (){Return 2 * pI * R;}// Normal friend FunctionsFrienddoubledist (circle P1, circle p2 )

These terms draw the following conclusions: Suppose f is a function to be correctly declared, and C is a class related to it: 1. The virtual function must be a member function. If F must be a virtual function, make it a member function of C. 2. Operator> and operator 3. Only non-member functions perform type conversion on the leftmost parameters. If f needs to convert the type of the leftmost parameter to make f a non-member function. If F also n

single-record functions in SQL 1.ASCII Returns the decimal number corresponding to the specified character; Sql> Select ASCII (' a ') a,ascii (' A ') a,ascii (' 0 ') zero,ascii (') space from dual; A A ZERO space --------- --------- --------- --------- 65 97 48 32 2.CHR Give an integer and return the corresponding character; Sql> Select Chr (54740) ZHAO,CHR () chr65 from dual; En C -- - Zhao A 3.CONCAT Connect two strings; Sql> Select Concat (' 010-

For a large module, the Cognos component mainly includes three parts: Cognos Powerplay Transformation Server: Converts a data source to a data cube. Cognos Powerplay Enterprise Server: Presents data cubes in OLAP analysis and OLAP reports; Cognos ReprotNet Server: Responsible for database-based data query, report creation, dashboard creation, report/dashboard display, etc. The

materials and has two production lines. One is an information production line that produces analysis reports, data queries, and online analysis and processing, data Visualization and other products, the other is the knowledge production line, which will produce: Data Mining. The customers of these products are business decision makers, so the role of business intelligence is decision support. Enterprise Data flows from the source database to the Data Warehouse through the ETL process, and th

This is a creation in Article, where the information may have evolved or changed. In this blog post, my goal is to:-revealing some of the specious virtues of small functions-explaining why I personally think it's not as good as suggested-explaining why small functions are sometimes counterproductive-explaining what I think small functions are really useful in a

Baidu engineers talk about the implementation principle and performance analysis of PHP functions (2). php Functions Class MethodIts execution principle is the same as that of user functions, and it is also translated into opcodes for sequential calls. Class implementation, zend is implemented using a Data Structure zend_class_entry, which stores some basic infor