QQ如何设置别人看是离线状态

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Defining recursive algebraic data types in XML XSD

Imagine I have a recursive algebraic data type like this (Haskell syntax): data Expr = Zero One Add Expr Expr[详细]

2022-12-24 18:28 分类：问答
童年的秋千(好童星王诗玥版)？

童年的秋千作词：龙一朵作开发者_运维知识库曲：石羽函演唱：王诗玥纸飞机缓缓划过窗前浮现儿时的脸操场上荡的秋千摇晃着我们的童年跟夕阳等待着放学玻璃珠映出笑脸踢足球弄脏了白球鞋又躲不过那一顿埋怨想念那天湛蓝[详细]

2022-12-24 18:27 分类：问答
降调针打完一针后为什么要等28天？？

上周医生让我回去等28天，开发者_如何学C28天后再去医院检查。为什么我要等这么久？我感到很恐慌。和我一样，做试管的等了20天才回医院。是我条件差吗？我心里就更担心了。我想问你为什么打完一针还要等28天？[详细]

2022-12-24 18:19 分类：问答
华硕主板多少钱啊？？

canvin_jsw 2022-04-21 02:15 开发者_运维问答需要根据具体机型判断维修价格，截至2020年3月，维修主板的价格在1000-2000元不等。[详细]

2022-12-24 17:39 分类：问答
Simulate Golf Game Strategy

I am working on what at best could be considered a \"primitive\" golf game, where after a certain bit of randomness is introduced I need to play out a hole of golf.The hole is static and I am not conc[详细]

2022-12-24 17:39 分类：问答
How to programmatically set the current page for UIPageControl?

I have 3 \"pages\" (page 0, page 1, page 2) in a UIScrollView that are snapped to by finger swipes. There is a UIPageCont开发者_开发技巧rol there too. The UIScrollView starts off presenting page 0. Wh[详细]

2022-12-24 17:29 分类：问答
Discussion on SEO best-practices for site development involving php

Recently in our work, I\'ve started getting some experience with SEO (finally).It\'s something I\'ve put off for a long time because I\'ve always maintained that SEO is a buzz-word b.s. pseudo-science[详细]

2022-12-24 17:27 分类：问答
getschema("foreignkeys") against SqlClient doesn't yield enough information

I need two tables and two sets of fields, not the name of the foreign key and one of the table names. Does anyone know how to query SQL 开发者_如何转开发Server for complete foreign key information? Th[详细]

2022-12-24 17:23 分类：问答
Query to add a column depending of outcome of there columns

I have a user table \'users\' that has fields like: id first_name last_name ... and have another table that determines relationships:[详细]

2022-12-24 17:17 分类：问答
Ray Generation Inconsistency

I have written code that generates a ray from the \"eye\" of the camera to the viewing plane some distance away from the camera\'s eye:[详细]

2022-12-24 16:28 分类：问答