大约有 23,000 项符合查询结果(耗时:0.0343秒) [XML]

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How to wait in a batch script? [duplicate]

I am trying to write a batch script and trying to wait 10 seconds between 2 function calls. The command: 6 Answers ...
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How do I remove the first characters of a specific column in a table?

... - 4) AS MyTrimmedColumn Edit: To explain, RIGHT takes 2 arguments - the string (or column) to operate on, and the number of characters to return (starting at the "right" side of the string). LEN returns the length of the column data, and we subtract four so that our RIGHT function leaves the lef...
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How to do a recursive find/replace of a string with awk or sed?

...erfectly, but I'm curious why the escaping is only presented for the first string pattern. – elrobis Jul 5 at 16:12 add a comment  |  ...
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Is char signed or unsigned by default?

In the book "Complete Reference of C" it is mentioned that char is by default unsigned. 7 Answers ...
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Is it possible to GROUP BY multiple columns using MySQL?

...red Dec 3 '09 at 17:14 Joe PhillipsJoe Phillips 43k2424 gold badges8989 silver badges147147 bronze badges ...
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App Inventor 2 拓展参考文档 · App Inventor 2 中文网

...拓展:数据表格视图,表格形式显示列表 【剪贴板】 Clipboard 拓展:实现剪贴板的复制粘贴功能 【Socket】 ClientSocketAI2Ext 拓展加强版:TCP/IP传输协议 【FTP】 FTP 客户端拓展:FTP协议连接、上传、下载、创建、修改目录等 【...
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Default filter in Django admin

... 'selected': self.value() == lookup, 'query_string': cl.get_query_string({ self.parameter_name: lookup, }, []), 'display': title, } def queryset(self, request, queryset): if self.value() in ('...
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How do I check if a string contains another string in Objective-C?

How can I check if a string ( NSString ) contains another smaller string? 23 Answers 2...
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What is the best way to tell if a character is a letter or number in Java without using regexes?

What is the best and/or easiest way to recognize if a string.charAt(index) is an A-z letter or a number in Java without using regular expressions? Thanks. ...
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Do I need to heartbeat to keep a TCP connection open?

I have two components that that communicate via TCP/IP. Component A acts as a server/listener and Component B is the client. The two should communicate as quickly as possible. There can only ever be one connection at any time (though that is aside to this question). A senior developer at my comp...