1.全局变量与局部变量练习 1 # -*- coding: UTF-8 -*- 2 def bar(): 3 print('from bar') 4 def foo(): 5 print('from foo') 6 bar() 7 foo() 8 9 name = 'lhf' 10 def change_name(): 11 global name 12 name = 'such a good young boy' 13 print('change_name',name) 14 def chan…

var a = 2; var b = a; //b 是 a 的值的一个副本 b++; a; b; var c = [1, 2, 3]; var d = c; // d 是 值[1, 2, 3]的一个引用 d.push(4); c; // [1, 2, 3, 4] d; // [1, 2, 3, 4] d = [4, 5, 6]; // console.log(c); // console.log(d); // 基本类型值( 包括 null.undefined.字符串.数字.布尔和 ES6中的 s…

本文转自:https://stackoverflow.com/questions/43935345/how-to-get-return-values-and-output-values-from-a-stored-procedure-with-ef-core 问题未解决 ALTER PROCEDURE [dbo].[SearchMovies] --@Year int = null, @CategoryIds varchar(50) = null, @Keywords nvarchar(4000)…

ECMAScript variables may contains two different types of data: primitive values and reference values. Primitive values are simple atomic pieces of data, while reference values are objects that may be made up of multiple values. The five primitive typ…

Problem: There are  n houses built in a line, each of which contains some value in it. A thief is going to steal the maximal value in these houses, but he cannot steal in two adjacent houses because the owner of a stolen house will tell his two neigh…

转载自:http://www.zhihu.com/question/21000872/answer/16856382>>> values = [0, 1, 2] >>> values[1] = values >>> values [0, [...], 2]我预想应当是 [0, [0, 1, 2], 2] 为何要赋值无限次? Python 没有赋值,只有引用.你这样相当于创建了一个引用自身的结构,所以导致了无限循环.为了理解这个问题,有个基本概念需要搞清…

最近在学习JS.  有一些概念还希望跟大家分享出来 Truthy and Falsy Values Falsy Values: undefined, null, 0, '', NaN(not a number) Truthy values: NOT falsy values var height; height = 0; // return else value var name; name = ''; // return else value var testNumber; testNumbe…

Description It is often necessary to query the database for a list of posts based on a custom field value. This guide will demonstrate how it is possible using the native WP functions Requirements Understanding of the get_posts() function Understandi…

django获取字段列表(values/values_list/flat) values方法可以获取number字段的字典列表 values_list可以获取number的元组列表 values_list方法加个参数flat=True可以获取number的值列表…

稍微熟悉Oracle的都知道,如果我们想一条SQL语句向表中插入多个值的话,如果如下语句 INSERT INTO 某表 VALUES(各个值),VALUES(各个值),.....; 这样会报错的,因为oracle是不支持这种写法的,如果多个INSERT INTO VALUEES(各个值);这样以“;”隔开一同执行也是不行的,oracle也是不支持的. 不过MySQL这两种方式都是支持的.在MySQL中还可以使用如下格式的插入语句: 示例: insert into persons (id_p, l…