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The practical example of developing Ethereum on. net platform (C)

This is an early version of this article, which aims to help those developers who have a basic understanding of the Ethereum blockchain platform, if they want to learn how to use the netherum. Net library to program the Ethereum platform. I'll add more in this article later, but for now, I'm using it to publish a series of C examples of. NET 10 + to show how to use the Nethereum library to...

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The exclusive or operation of a pointer can be used to exchange the values of two variables

Pointer can't perform exclusive or operation directly. It needs to be converted into int or long. In Linux system, pointer can only be long, because pointer takes up 4 bytes in win system and 6 bytes in Linux system. The following is the exclusive or operation of two pointers to realize the exchange of pointers: #include <stdio.h> int main() { int *a,*b; ...

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Cf888g. XOR MST (boruvka minimum spanning tree Trie tree)

meaning of the title Title Link Give \ (n \) points, each point has a point weight \ (a[i] \), and the edge weight between adjacent two points is \ (a[i] \oplus a[j] \), and find the value of the minimum spanning tree Sol I have done two kinds of interesting questions, One is to find the rule by typing the table directly , the other is like using Boruvka algorithm with some operations. First,...

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c + + to copy files and modify corresponding properties

Problem description Complete a directory copy command mycp, including files and subdirectories under the directory. The operation results are as follows: beta@bugs.com [~/]# ls –la sem total 56 drwxr-xr-x 3 beta beta 4096 Dec 19 02:53 ./ drwxr-xr-x 8 beta beta 4096 Nov 27 08:49 ../ -rw-r--r-- 1 beta beta 128 Nov 27 09:31 Makefile -rwxr-xr-x 1 beta beta 5705 Nov 27 08:50...

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Shell array and its cases: real time statistics of the number of TCP connection states

Article directory Shell array Ordinary array -Defining arrays -View array -Access the element [strange symbol] ${! arr [@]} in the array -Case: put each row of hosts into the array and print it out Associative array -Define Association array declare -A assArray -Case: get all key value pairs -Case: number statistics of shell types implemented by array -Case: array...

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Correction of tile coordinate deviation in Gaud offline map

For map coordinate migration, take leaflet as an example, there are the following solutions Method 1. Modify the source code of leaflet to solve the problem of map coordinate migration Method 2. Add the true latitude and longitude of the point to the encrypted map through the offset algorithm Method 3. Rectify the off-line map tile directly Method 1 needs to modify the source code Method 2...