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Python - List of unique dictionaries
... only):
import numpy as np
list_of_unique_dicts=list(np.unique(np.array(list_of_dicts)))
To get it worked with Python 3.x (and recent versions of numpy), you need to convert array of dicts to numpy array of strings, e.g.
list_of_unique_dicts=list(np.unique(np.array(list_of_dicts).asty...
What is the most efficient way to deep clone an object in JavaScript?
...fined, Infinity, RegExps, Maps, Sets, Blobs, FileLists, ImageDatas, sparse Arrays, Typed Arrays or other complex types within your object, a very simple one liner to deep clone an object is:
JSON.parse(JSON.stringify(object))
const a = {
string: 'string',
number: 123,
bool: false,
...
Cannot instantiate the type List [duplicate]
...ated. Only concrete types can be instantiated. You probably want to use an ArrayList, which is an implementation of the List interface.
List<Product> products = new ArrayList<Product>();
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Quickest way to convert a base 10 number to any base in .NET?
...tring(42,
Enumerable.Range('A', 26).Select(x => (char)x).ToArray());
// convert to sexagesimal
string xx = IntToString(42,
new char[] { '0','1','2','3','4','5','6','7','8','9',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','...
Is there a performance difference between i++ and ++i in C?
....
The differences between ++i and i++ only matters in expressions such as array[i++] = x; versus array[++i] = x;. Some may argue and say that the postfix will be slower in such operations because the register where i resides have to be reloaded later. But then note that the compiler is free to orde...
Scanner vs. StringTokenizer vs. String.Split
...ible, but arguably doesn't give you the simplest API for simply getting an array of strings delimited by a particular expression.
String.split() and Pattern.split() give you an easy syntax for doing the latter, but that's essentially all that they do. If you want to parse the resulting strings, or c...
Loop through files in a folder using VBA?
... to get all of the sub-folders for the target folder and load them into an array, then pass the array into a function that recurses.
Here's a class that I wrote that accomplishes this, it includes the ability to search for filters. (You'll have to forgive the Hungarian Notation, this was written w...
Accessing last x characters of a string in Bash
... than
zero, and parameter is not ‘@’ and not an indexed or associative array, it is
interpreted as an offset from the end of the value of parameter rather than a
number of characters, and the expansion is the characters between the two
offsets. If parameter is ‘@’, the result is length posit...
Picking a random element from a set
... If the set is not mutated over multiple accesses, you can copy it into an array and then access O(1). Just use myHashSet.toArray()
– ykaganovich
Jul 21 '10 at 20:23
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无社交不商业，Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
...辆车，几百万司机，永远是无法撼动的。
当用户习惯使用软件叫车后，又推出了专车服务，专车直接威胁了出租车公司的生存，这下出租车公司才反应过来，想要打击专车服务。但是，这种趋势完全挡不住。
一个月前，我...