我从F#程序集中获取了一堆对象,然后对它们进行反思,以发现它们的价值。
(准确地说,我有一个使用fsYacc的解析器。然后,我尝试在TreeView中显示解析结果。)
返回的一个可能的对象是这个有区别的联合:
type op = Eq | Gt | Ge | Lt | Le
这种类型的对象将有一个值,比如Ge。
有没有办法使用反射来确定一个对象是有区别的联合,从而采取步骤来确定它的值?
我想在Outlook中选择邮件,然后将它们复制到文本文件中,并将类别和接收时间作为txt标题。例如,如果选择了三条消息,我想要三个文本文件。 Sub selectMSGToText()
Dim oMail As Outlook.MailItem
Set oMail = Application.ActiveExplorer.Selection.Item(1)
Dim sMail As Object
Set sMail = Application.ActiveExplorer.Selection
Dim categories As String: cat
NSString *str1 = @"offers unique programmes for children aged between 18 months to 6 years in an in an opulent property in the heart of Powai. Our large property has ample outdoor space which makes outdoor learning an integral part of the children's day-to-day curriculum and provides opportu
我用海尔做了数据库备份。当我试图恢复备份时,我会得到一个语法错误。
heidiSQL为我生成的查询:
CREATE TABLE IF NOT EXISTS "age_categories" (
"id" INTEGER NOT NULL DEFAULT nextval('age_categories_id_seq'::regclass) COMMENT E'',
"created_at" TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL COMMENT E'
我使用Spring-JDBC来执行SQL并获取结果。
SELECT
SUM(spend) total_sum
FROM TABLE_NAME
WHERE
sup_id = ? AND
( ( YEAR = ? AND period IN ( ? ) ) OR
( YEAR = ? AND period IN(?)))
并且绑定变量以如下方式传递:
final Object[] paramMap = { "1234", "2010",