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What is better, adjacency lists or adjacency matrices for graph problems in C++?
... a list takes up more memory than a matrix:
8e > n2/8 when d > 1/64
So with these numbers (still 32-bit specific) the breakpoint lands at 1/64.
If the density (e/n2) is bigger than 1/64, then a matrix is preferable if you want to save memory.
You can read about this at wikipedia (artic...
What are the differences between a multidimensional array and an array of arrays in C#?
...8.439 4.362 4.936 4.533 4.751 4.776 4.635 5.864
7.414 13.196 11.940 11.832 11.675 11.811 11.812 12.964 11.885 11.751
11.355 10.788 10.527 10.541 10.745 10.723 10.651 10.930 10.639 10.595
Source code:
using System;
using System.Diagnostics;
static class ArrayPref
{...
What is the difference between application server and web server?
..., which eventually all merged into JSP. Microsoft added ASP, I think in 1996, to Windows NT 4.0. The static web server had learned some new tricks, so that it was an effective "app server" for many scenarios.
In a parallel category, the app server had evolved and existed for a long time. companie...
Set transparent background of an imageview on Android
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64
@AnhSirkDasarp Not only from 01 to 99, as the rest of the numbers these are also hexadecimal so you can put anything from 00 to ff. For fif...
OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
...easy的如下两个上层接口：
easy_session_t *easy_session_create(int64_t asize)
int easy_client_dispatch(easy_io_t *eio, easy_addr_t addr, easy_session_t *s)
首先看看session这个关键的数据结构：
#define EASY_MESSAGE_SESSION_HEADER \
easy_connection_t *c; \
easy...
What's the equivalent of use-commit-times for git?
...ocessed
# 62 commits evaluated
# 1,155 updated files
git
# 3.71 seconds
# 96,702 log lines processed
# 24,217 commits evaluated
# 2,495 updated files
wine
# 13.53 seconds
# 443,979 log lines processed
# 91,703 commits evaluated
# 6,005 updated files
linux kernel
# 59.11 seconds
# 1,484,567 log li...
What is the difference between Google App Engine and Google Compute Engine?
...Moshe Shaham
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How to exclude a directory in find . command
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84
It still traverses all of the unwanted directory, though. I'm adding my own answer. :-)
– Daniel C. Sobral
...
What's the difference between “STL” and “C++ Standard Library”?
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84
There is no one answer that's really correct. Alexander Stepanov developed a library he called ...
Hashing a dictionary?
..._dict__)) # 1209812346789
foo.a = 1
print (make_hash(foo.__dict__)) # -78956430974785
Alas, when you attempt to do the same thing with the class itself:
print (make_hash(Foo.__dict__)) # TypeError: unhashable type: 'dict_proxy'
The class __dict__ property is not a normal dictionary:
print (typ...