小编aks*_*ar6的帖子

如何以整数格式获取一周中的哪一天？我知道ToString只返回一个字符串.

DateTime ClockInfoFromSystem = DateTime.Now;
int day1;
string day2;
day1= ClockInfoFromSystem.DayOfWeek.ToString(); /// it is not working
day2= ClockInfoFromSystem.DayOfWeek.ToString(); /// it gives me string

我有varbinary(MAX)参数的表.执行查询后,我将结果存储在SqlDataReader中,因为它有多列作为输出.

SqlCommand cmd = new SqlCommand("select leave_details from LeaveTable");
SqlDataReader obj;
con.Open();
obj = cmd.ExecuteReader();

现在我想将每行的结果转换为byte [].

这个不起作用:

byte[] b=null;
obj.GetBytes(0,0,b,0,1024);

我正在尝试为 PHP 安装和启用 GMP 扩展。

Mac OS High Sierra 10.13.5
PHP Version: 7.1.16
Composer version: 1.6.5
Homebrew version: 1.6.9

运行时出现此错误composer install。

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - The requested PHP extension ext-gmp * is missing from your system. Install or enable PHP's gmp extension.

该composer.json具有的依赖"ext-gmp": "*"。我尝试过以下事情：

1. brew install homebrew/php/php70-gmp
2. brew install gmp …

我想使用C#代码隐藏设置不同控件的边距(我知道如何在XAML标记中执行此操作).

我需要它来控制像矩形或按钮.

C 语言中有哪些非上下文无关语言的例子？C语言中如何存在以下非CFL？

a) L1 = {wcw|w 是 {a,b}*}

b) L2 = {a^nb^mc^nd^m| n,m >=1}