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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...O语言很类似。print("Hello World")复制代码
你可以像python一样，在命令行上运行lua命令后进入lua的shell中执行语句。chenhao-air:lua chenhao$ lua
Lua 5.2.2 Copyright (C) 1994-2013 Lua.org, PUC-Rio
> print("Hello, World")
Hello, World
&g...
Extracting just Month and Year separately from Pandas Datetime column
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If you want new columns showing year and month separately you can do this:
df['year'] = pd.DatetimeIndex(df['ArrivalDate']).year
df['month'] = pd.DatetimeIndex(df['ArrivalDate']).month
or...
df['year'] = df['ArrivalDate'].dt...
C++ equivalent of Java's toString?
... cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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How do I add a library project to Android Studio?
How do I add a library project (such as Sherlock ABS) to Android Studio ?
30 Answers
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Overlaying histograms with ggplot2 in R
I am new to R and am trying to plot 3 histograms onto the same graph.
Everything worked fine, but my problem is that you don't see where 2 histograms overlap - they look rather cut off.
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How can I find a specific element in a List?
My application uses a list like this:
8 Answers
8
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case-insensitive list sorting, without lowercasing the result?
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In Python 3.3+ there is the str.casefold method that's specifically designed for caseless matching:
sorted_list = sorted(unsorted_list, key=str.casefold)
In Python 2 use lower():
sorted_list = sorted(unsorted_list, key=lambda...
How does StartCoroutine / yield return pattern really work in Unity?
...rinciple of coroutines. I know how to get the standard StartCoroutine / yield return pattern to work in C# in Unity, e.g. invoke a method returning IEnumerator via StartCoroutine and in that method do something, do yield return new WaitForSeconds(1); to wait a second, then do something el...
How do I localize the jQuery UI Datepicker?
I really need a localized dropdown calendar. An English calendar doesn't exactly communicate excellence on a Norwegian website ;-)
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How to have an auto incrementing version number (Visual Studio)? [duplicate]
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If you add an AssemblyInfo class to your project and amend the AssemblyVersion attribute to end with an asterisk, for example:
[assembly: AssemblyVersion("2.10.*")]
Visual studio will increment the final number for you accord...