大约有 1,500 项符合查询结果(耗时:0.0080秒) [XML]

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Rails: How does the respond_to block work?

...# index.html.erb format.json { render :json => @posts } format.csv { render :csv => @posts } format.js end end The csv line will cause to_csv to be called on each post when you visit /posts.csv. This makes it easy to export data as CSV (or any other format) from your rails ...
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How to use the “number_to_currency” helper method in the model rather than view?

...in Sam’s answer. If you think “but I really need this to write my to_csv & to_pdf methods in my model!”, then your entire premise is wrong—after all, you don’t have a to_html method, do you? And yet your object is very often rendered as HTML. Consider creating a new class for generat...
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Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...

...30多个小时。 4号下午的时候,负责和联系联想的同事啊,终于到了VMwARE,并且联系上了原厂工程师。 对了我们购买的VMWARE 是联想的OEM版,直接联系VMWARE是没有卵用的。必须经过联想。 关于配置Oracle RAC最佳配置参...
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LINQ Aggregate algorithm explained

...in sequence) to make 6. Then adds 6 and 4 to make 10. Example 2. create a csv from an array of strings var chars = new []{"a","b","c", "d"}; var csv = chars.Aggregate( (a,b) => a + ',' + b); Console.WriteLine(csv); // Output a,b,c,d This works in much the same way. Concatenate a a comma and b...
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How can I combine multiple rows into a comma-delimited list in Oracle? [duplicate]

...('Antigua'); SELECT SUBSTR (SYS_CONNECT_BY_PATH (country_name , ','), 2) csv FROM (SELECT country_name , ROW_NUMBER () OVER (ORDER BY country_name ) rn, COUNT (*) OVER () cnt FROM countries) WHERE rn = cnt START WITH rn = 1 CONNECT BY rn = PRIOR rn + 1; ...
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如何获取IE (控件)的所有链接(包括Frameset, iframe) - C/C++ - 清泛网 -...

... 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节点列表:CComPtr<IHTMLElement> body;...CComPtr<IDispatc...IE 顶层 body 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节点列表: CComPtr<IHTMLElement> body; ... CComPtr<IDispatch> spDispCollec...
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如何诊断CDN故障 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...? 幸运的是通过阿里测提供的服务,我们能拿到这个IP列表,当然这个IP列表不可能百分百完整,不过应该包含了大部分的节点,有兴趣的可以参考百度的JQuery CDN例子。 需要说明的是阿里测偏重于测试国内的网络环境,如果你...
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【phpcms v9】html静态化设置及URL规则优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...将会显示成:news/china/1000.html。 这个有点小问题,如果列表有多页,那么第二页只是生成一个数字的html,比如2.html表示列表第二页,建议修改成: {$categorydir}{$catdir}/index.html|{$categorydir}{$catdir}/index_{$page}.html 按照栏目index页...
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App Inventor 2在不同的屏幕之间传递变量 - App Inventor 2 中文网 - 清泛I...

...然后使用文本里的函数分割开就是多个变量了。 2、使用列表变量传递(列表中可以放多个变量),列表的用法后续会讲到。 分解后,设置的文本是【“第一个变量”,“第二个变量”】,在下一屏幕如何初始化变量?引用: 69...
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App Inventor 2 最新QA汇总 - App Inventor 2 中文网 - 清泛IT社区,有思想、有深度

...侣的各种测试方式均有演示。 Q:微数据库可以保存列表吗? A:可以,请参考文档:https://www.fun123.cn/reference/components/storage.html#TinyDB。列表可以直接保存,然后取出值可直接还原列表