ANCOVA (analysis of covariance) is a useful statistical method because it enables the inclusion of covariates in the analysis, which may assist adjust for auxiliary variables and increase the precision of group comparisons. These additional factors, or co
while 语句可以在某个条件表达式为真的前提下，循环执行指定的一段代码，直到那个表达式不为真时结束循环。—— MDN while 语句也是一种循环语句，也称 while 循环。 while 循环接收一个表达式，当这个表达式结果非 false 的时候，就会执行 while 循环的代码块。
Let us understand how MySQL can be installed on macOS. There is a package that is located inside a disk image (a .dmg) file which needs to be mounted on by double clicking on the icon in the Finder. The next step is to mount the image and display the cont
Let us understand how MySQL can be connected to the database using the command-line. This is done for clients like mysql or mysqldump. The below command invokes mysql without specifying any explicit connection parameters − mysql Since there are no p
1. 前言 2. array.find() 3. array.findIndex() 1. 前言 J**aScript 的 Array 对象方法太多了，短时间内记不住的，可以每天学几个，日积月累，积少成多 ! ES6 中新增了很多实用的数组方法，array.find() 和 array.findIndex 就是其中两个 array.find() 方法用于获取数组中满
1. Vuex 需要遵守的规则 2. Vuex 目录结构示例【官方】 3. 调整 Vuex 目录结构 4. 按照功能模块组织目录结构 1. Vuex 需要遵守的规则 Vuex 并不限制你的代码结构，但是，它规定了一些需要遵守的规则 1. 应用层级的状态应该集中到单个 store 对象中。也就是一个应用最好只使用
To validate data you can make use of the Validation class. The validation helps to validate data as well as to display error messages to the user. Example 1 In the example below the make() method is used. The first argument is the data to be validated and