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How to generate a random string in Ruby
I'm currently generating an 8-character pseudo-random uppercase string for "A" .. "Z":
50 Answers
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Which characters need to be escaped when using Bash?
...ive list of characters that need to be escaped in Bash? Can it be checked just with sed ?
7 Answers
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cocktail party algorithm SVD implementation … in one line of code?
In a slide within the introductory lecture on machine learning by Stanford's Andrew Ng at Coursera, he gives the following one line Octave solution to the cocktail party problem given the audio sources are recorded by two spatially separated microphones:
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Efficiency of purely functional programming
...s the worst possible asymptotic slowdown that can happen when programming purely functionally as opposed to imperatively (i.e. allowing side-effects)?
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What are copy elision and return value optimization?
What is copy elision? What is (named) return value optimization? What do they imply?
4 Answers
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Is there a way to hide the scroll indicators in a UIScrollView?
I've got a use case where those indicators disturb the user interaction. Can I subclass and override a method or do something similar to remove the scroll indicators from the scroll view?
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Linux chmod命令用法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Linux chmod命令用法chmod----改变一个或多个文件的存取模式(mode)chmod [options] mode files只能文件属主或特权用户才能使用该功能来改变文件存取模式。mo...chmod----改变一个或多个文件的存取模式(mode)
chmod [options] mode files
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Hidden features of Scala
What are the hidden features of Scala that every Scala developer should be aware of?
28 Answers
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How do I make a checkbox required on an ASP.NET form?
I've done some searching on this, and I've found several partial answers, however nothing that gives me that warm fuzzy "this is the right way to do this". To answer the most frequently occurring complaint against this question: "checkboxes can have two legitimate states - checked and unchecked", th...