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Emacs bulk indent for Python
...can save a couple of keystrokes. Or you can do C-u 10 C-x e to apply it 10 times.
(I know it doesn't sound like much, but try re-indenting 100 lines of garbage literal without missing down-arrow, and then having to go up 5 lines and repeat things ;) ).
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Get top 1 row of each group
... I could upvote more than once. I have returned to this answer about 7.000 times already. There might come a day, when I take the time to understand this, so I wouldn't have to come back. But it is not this day.
– mpn275
Sep 9 at 9:56
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Java compile speed vs Scala compile speed
...ing in Scala for a while and I like it but one thing I'm annoyed by is the time it takes to compile programs. It's seems like a small thing but with Java I could make small changes to my program, click the run button in netbeans, and BOOM, it's running, and over time compiling in scala seems to con...
What is the difference between partitioning and bucketing a table in Hive ?
...n the world are about 300, so cardinality would be ~300. For a field like 'timestamp_ms', which changes every millisecond, cardinality can be billions. In general, when choosing a field for partitioning, it should not have a high cardinality, because you'll end up with way too many directories in yo...
C++ IDE for Linux? [closed]
...o Linux and the first thing I did was try to find a reasonable IDE. At the time this was impossible: no good IDE existed.
Epiphany: UNIX is an IDE. All of it.1
And then I realised that the IDE in Linux is the command line with its tools:
First you set up your shell
Bash, in my case, but many p...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
... sizeof 只能在不安全的上下文中使用(请考虑使用 System.Runtime.InteropServices.Marshal.SizeOf)
修改为Marshal.SizeOf方法，改方法返回对象的非托管大小（以字节为单位）。参数可以是引用类型或装箱的值类型。布局必须是连续的或显式的...
How should one use std::optional?
...mple. Performance shouldn't really be a concern when using it - there are times when something is optional, in which case this is often the correct tool for the job.
– Timothy Shields
Jun 27 '13 at 1:55
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handle textview link click in my android app
...ch click. Also the filter by position looks prone to errors. A similar one-time initialization approach is shown in this answer.
– Mister Smith
Jan 28 '14 at 12:10
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Ruby - elegantly convert variable to an array if not an array already
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[*foo] or Array(foo) will work most of the time, but for some cases like a hash, it messes it up.
Array([1, 2, 3]) # => [1, 2, 3]
Array(1) # => [1]
Array(nil) # => []
Array({a: 1, b: 2}) # => [[:a, 1], [:b, 2]]
[*[1, 2, 3]] # =&...
How do you get a timestamp in JavaScript?
How can I get a timestamp in JavaScript?
39 Answers
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