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Why start an ArrayList with an initial capacity?
The usual constructor of ArrayList is:
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Remove a fixed prefix/suffix from a string in Bash
In my bash script I have a string and its prefix/suffix. I need to remove the prefix/suffix from the original string.
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Immutability of Strings in Java
Consider the following example.
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MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
MongoDB数据导出导入工具：mongoexport,mongoimport导出导入工具mongoexport、mongoimport，Mongodb中的mongoexport工具可以把一个collection导出成JSON格式或CSV格式的文件，可以通过参数指定导出的数据项；mongoimport将相应文件导入到collection中。一...
How to get a key in a JavaScript object by its value?
I have a quite simple JavaScript object, which I use as an associative array. Is there a simple function allowing me to get the key for a value, or do I have to iterate the object and find it out manually?
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Accessing last x characters of a string in Bash
I found out that with ${string:0:3} one can access the first 3 characters of a string. Is there a equivalently easy method to access the last three characters?
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C# Set collection?
Does anyone know if there is a good equivalent to Java's Set collection in C#? I know that you can somewhat mimic a set using a Dictionary or a HashTable by populating but ignoring the values, but that's not a very elegant way.
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Is there an expression for an infinite generator?
Is there a straight-forward generator expression that can yield infinite elements?
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How to serialize SqlAlchemy result to JSON?
Django has some good automatic serialization of ORM models returned from DB to JSON format.
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Numpy first occurrence of value greater than existing value
I have a 1D array in numpy and I want to find the position of the index where a value exceeds the value in numpy array.
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