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Heroku deployment error H10 (App crashed)

...but I found more info when I tried to go through the console. Hope this helps. $ heroku run rails console share | improve this answer | follow | ...
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PreparedStatement IN clause alternatives?

...CT UNNEST(?::VARCHAR[])) or ... IN (SELECT UNNEST(CAST(? AS VARCHAR[]))). (PS: I don't think ANY works with a SELECT.) – ADTC Aug 1 '13 at 3:17 ...
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BLE(一)概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区,...

...,即Bluetooth,是斯堪的纳维亚语中 Blåtand / Blåtann 的英化版本。该词是十世纪的一位国王Harald Bluetooth的绰号,相传他将纷争不断的丹麦部落统一为一个王国,并引入了基督教。蓝牙技术开发者Jim Kardach于1997年提出用Bluetooth这个...
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理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...据发生异常,没有进行任何处理。下面是处理异常的加强版本: file = open("/tmp/foo.txt") try: data = file.read() finally: file.close() While this works well, it is unnecessarily verbose. This is where with is useful. The good thing about with apart from the be...
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远程临场机器人 你会买单吗? - 资讯 - 清泛网 - 专注C/C++及内核技术

...ozible网站上,这个团队这样自我介绍:“我们致力于打造酷的机器人产品,让机器人真正走进人们的生活。” 买家:个人还是企业? 这或许是个好玩的产品,但是其未来的商业化应用场景何在? “这种机器人目前有三大属...
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小心!创业者不可不知的互联网家装惊天伪命题 - 资讯 - 清泛网 - 专注C/C++...

...然而,它却是与互联网融合之后真正受到众多资本和市场广泛关注的一个行业。互联网家装之所以会受到如此多的关注,主要是因为家装行业本身的市场规模巨大,产业链延伸很长,涉及到的环节很多,人们与家装的关系也...
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Center a popup window on screen?

...At this rate, we will have an answer for 5 monitors in 2020, 6 monitors in 2025, 7 monitors in 2030... let's keep this cycle going! – Tony M Mar 20 '15 at 20:34 2 ...
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程序员之网络安全系列(三):数据加密之对称加密算法 - 更多技术 - 清泛网...

...到数据,那么我们就们就需要对数据加密。 加密技术 是常用的安全保密手段,利用技术手段把重要的数据变为乱码(加密)传送,到达目的地后再用相同或不同的手段还原(解密)。 加密包括两个元素:算法和密钥。一个...
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How do I capture the output into a variable from an external process in PowerShell?

...ns synchronously - just invoke them directly, as in any shell. Doing so keeps the application connected to the calling console's standard streams, allowing its output to be captured by simple assignment $output = netdom ..., as detailed below. Fundamentally, capturing output from external programs w...
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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC OnEraseBkgnd浅析在使用VC进行绘图时,郁闷的就是屏幕闪烁问题。有时只能使用双缓冲去解决,当然更多的时候是去忍受。有没有什么这种的方法?有,那就是重 在使用VC进行绘图时,郁闷的就是屏幕闪烁问题。有时只能...