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灾难恢复RTO 与 RPO - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...O。 所谓 RTO,Recovery Time Objective,它是指灾难发生后, IT 系统当机导致业务停顿之时开始, IT 系统恢复至可以支持各部门运作、恢复运营之时,此两点之间的时间段称为 RTO。 所谓 RPO,Recovery Point Objective,是指系统...
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“21天教你学会C++” - 创意 - 清泛网 - 专注C/C++及内核技术

...会:在3天时间里,你不够时间写一些有意义的程序,并它们的失败与成功中学习。你不够时间跟一些有经验的程序员一起工作,你不会知道在C++那样的环境中是什么滋味。简而言之,没有足够的时间让你学很多东西。所以...
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Is there a Python Library that contains a list of all the ascii characters?

... Here it is: [chr(i) for i in xrange(127)] share | improve this answer | follow | ...
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互联网数据造假盛行 浮夸风伤害创新经济 - 资讯 - 清泛网 - 专注C/C++及内核技术

...中就公开地质疑一亩田交易数据存在造假行为。文中称,网站“采购部分来看”,最近的数据里翻找多页后才能零星找几个报价数据,而近期成交动态里的数据,仔细看的话也是有些诡异。比如“6小时前刘老板采购了999.999...
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Getting a map() to return a list in Python 3.x

... Do this: list(map(chr,[66,53,0,94])) In Python 3+, many processes that iterate over iterables return iterators themselves. In most cases, this ends up saving memory, and should make things go faster. If all you're going to do is iterate...
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How do I put double quotes in a string in vba?

...A1").Formula = "IF(Sheet1!A1=0,"""",Sheet1!A1)" Some people like to use CHR(34)*: Worksheets("Sheet1").Range("A1").Formula = "IF(Sheet1!A1=0," & CHR(34) & CHR(34) & ",Sheet1!A1)" *Note: CHAR() is used as an Excel cell formula, e.g. writing "=CHAR(34)" in a cell, but for VBA code y...
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Way to get all alphabetic chars in an array in PHP?

... PHP has already provided a function for such applications. chr(x) returns the ascii character with integer index of x. In some cases, this approach should prove most intuitive. Refer http://www.asciitable.com/ $UPPERCASE_LETTERS = range(chr(65),chr(90)); $LOWERCASE_LETTERS = range(c...
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...了一个对话框类cn.blogjava.youxia.rcp_start.FirstDialog,这个类org.eclipse.swt.widgets.Dialog类继承,熟悉swt的朋友一定不会陌生。我建议大家可以使用Designer插件,这个插件对swt/jface提供非常好的可视化支持,在这个对话框中,我们只简单...
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融资千万美元后的足记要如何应对“爆款后遗症”? - 资讯 - 清泛网 - 专注C...

...响动。但杨柳认为这几个月还是做了不少重要的事:后台php架构换成Java架构。这些工作前端看不,但如果不改后台,新功能一个都上不了。 8月底9月初,足记的新版本即将上线,他们并不会推出更多类似“大片”的模式,...
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Python: how to print range a-z?

...guages as well? Thanks & Best Regards – Michael Schroter Apr 13 at 6:17 add a comment  |  ...