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How to call shell commands from Ruby
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This explanation is based on a commented Ruby script from a friend of mine. If you want to improve the script, feel free to update it at the link.
First, note that when Ruby calls out to a shell, it typically calls /bin/sh, not Bash. Som...
How do I calculate the date six months from the current date using the datetime Python module?
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I found this solution to be good. (This uses the python-dateutil extension)
from datetime import date
from dateutil.relativedelta import relativedelta
six_months = date.today() + relativedelta(months=+6)
The advantage of this approach is ...
App Inventor 2 NFC应用教程 - 读取NFC标签与门禁卡 · App Inventor 2 中文网
... 组件参考文档 拓展参考文档 概念参考文档 IoT 参考文档 技术和其他指南 中文网原创 VIP 专享 App教程 入门必读 App上架指南 特色 AI 助手 · 一句话生成 App 鸿蒙 · 一套...
How to re-sign the ipa file?
How do I sign the .ipa file with a provisioning profile after I generate an IPA like the following with a different provision profile? I would like to sign the IPA with an ad-hoc provisioning profile for beta testing, and then re-sign the exact IPA with an app submission provisioning profile for the...
How do I switch between the header and implementation file in Xcode 4?
How do I switch between the header and implementation file in Xcode 4?
7 Answers
7
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configure: error: C compiler cannot create executables
I've checked a number of similar questions on stackoverflow but haven't found an answer yet.
15 Answers
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Change templates in Xcode
...t to have customized variants of. Then change their names and the information in them. Finally, put them in the appropriate location in your account's Library/Application Support folder, specifically:
File templates: ~/Library/Application Support/Developer/Shared/Xcode/File Templates/
Target tem...
Tri-state Check box in HTML?
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Edit — Thanks to Janus Troelsen's comment, I found a better solution:
HTML5 defines a property for checkboxes called indeterminate
See w3c reference guide. To make checkbox appear visually indeterminate set it to true:
element.indeterminate = true;
Here is Janus Troelsen's fiddle. Not...
How to fix Array indexOf() in JavaScript for Internet Explorer browsers
...u are aware that Internet Explorer does not implement the ECMAScript function for Array.prototype.indexOf() [including Internet Explorer 8]. It is not a huge problem, because you can extend the functionality on your page with the following code.
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写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...id上写很多地方不一样，要去熟悉Android编程的一些特性，iOS编程的一些特性，了解清楚这些，才能写出更加地道的代码，充分发挥各自平台的优势。
基础的数据结构与算法，掌握好这些在解决一些特定问题时，可以以更加优雅...