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Two versions of python on linux. how to make 2.7 the default
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edited Oct 8 '13 at 19:47
answered Oct 8 '13 at 19:17
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How to check iOS version?
...a comparison.
[[NSProcessInfo processInfo] operatingSystemVersion] in iOS 8 and above.
As of Xcode 9:
if (@available(iOS 9, *)) {}
The full answer …
In Objective-C, and Swift in rare cases, it's better to avoid relying on the operating system version as an indication of device or OS capabil...
How to generate a range of numbers between two numbers?
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28 Answers
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Using awk to print all columns from the nth to the last
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edited Apr 8 '15 at 13:01
fedorqui 'SO stop harming'
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C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...进行位逻辑非运算，结果等于10101010。用十进制表示就是~85等于176。
2、位逻辑与运算
位逻辑与运算将两个运算对象按位进行与运算。与运算的规则：1与1等于1，1与0等于0。
比如：10010001（二进制）&11110000等于10010000（二进...
Counting inversions in an array
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edited Aug 29 '14 at 9:48
barghest
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answered Jun 21 '11 at 11:58
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Java 8 NullPointerException in Collectors.toMap
The Java 8 Collectors.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...allows you to switch from the default ASCII to other encodings such as UTF-8, which the Python runtime will use whenever it has to decode a string buffer to unicode.
This function is only available at Python start-up time, when Python scans the environment. It has to be called in a system-wide mo...
Is there a common Java utility to break a list into batches?
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answered Aug 19 '12 at 13:38
Tomasz NurkiewiczTomasz Nurkiewicz
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