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What are all the common ways to read a file in Ruby?
...d
# File is closed automatically at end of block
It is also possible to explicitly close file after as above (pass a block to open closes it for you):
f = File.open("my/file/path", "r")
f.each_line do |line|
puts line
end
f.close
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Convert Python dict into a dataframe
..., is since calling the DataFrame constructor with scalar values (where it expects values to be a list/dict/... i.e. have multiple columns):
pd.DataFrame(d)
ValueError: If using all scalar values, you must must pass an index
You could take the items from the dictionary (i.e. the key-value pairs):
...
How to read a file line-by-line into a list?
... remove whitespace characters like `\n` at the end of each line
content = [x.strip() for x in content]
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp）tinyxml XML解析C++编写的，一个 h，一个 cpp，绿色小巧，直接加入工程源码编译，跨平台。使用方法参见《C++ 读写xml方法整理（持续更新）》tinyxml2 h *O C++编写的，一个.h，一个.cpp，绿...
Sorting a list using Lambda/Linq to objects
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It often happened to me to write complex comparison operators, involving multiple comparison criteria and a failsafe GUID comparison in the end to ensure antisymmetry. Would you use a lambda expression for a complex comparison like that? If not, does this mean tha...
How to simulate a touch event in Android?
How to simulate a touch event with Android while giving the X and Y coordinates manually?
7 Answers
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How can I wrap text in a label using WPF?
I have a TextBox and a Label. After clicking a button, I execute the following code:
10 Answers
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How to determine the longest increasing subsequence using dynamic programming?
...lution which is O(N^2), where N is the size of the collection. There also exists a O(N log N) solution, which I will describe also. Look here for it at the section Efficient algorithms.
I will assume the indices of the array are from 0 to N - 1. So let's define DP[i] to be the length of the LIS (Lo...
How to shorten my conditional statements
...esn't have the Array#includes method, you can use this polyfill.
Short explanation of the ~ tilde shortcut:
Update: Since we now have the includes method, there's no point in using the ~ hack anymore. Just keeping this here for people that are interested in knowing how it works and/or have en...
How to inherit constructors?
...s can then mask out some of them using constant values like null and only expose the necessary ones through their constructors.
Update
In C#4 you could specify default parameter values and use named parameters to make a single constructor support multiple argument configurations rather than having o...