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Are Javascript arrays sparse?
...script>
Displays:
array[0] = zero, typeof(0) == string
array[1254503972355] = now, typeof(1254503972355) == string
array[3.14] = pi, typeof(3.14) == string
Notice how I used for...in syntax, which only gives you the indices that are actually defined. If you use the more common for (var i = 0...
c++ boost::multi_index composite keys efficiency - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ boost::multi_index composite keys efficiencyLong time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a...Long time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that ...
CListCtrl 行高设置，自定义行高 - C/C++ - 清泛网 - 专注C/C++及内核技术
CListCtrl 行高设置，自定义行高先看效果：主要步骤及代码剖析：MyListCtrl.h#pragma onceclass CMyListCtrl : public CListCtrl{public:CMyListCtrl(void);~CMyListC...先看效果：
主要步骤及代码剖析：
MyListCtrl.h
#pragma once
class CMyListCtrl : public CList...
Linux scp 远程文件上传下载，指定端口 - 操作系统(内核) - 清泛网 - 专注C...
Linux scp 远程文件上传下载，指定端口linux-scp1、默认22端口上传、下载文件：scp test tgz root@xxx xxx xxx xxx: tmpscp root@xxx xxx xxx xxx: tmp test tgz 2、指定端口：scp -P8888 root@xxx xxx xxx xxx: tmp test tgz 1、默认22端口上传、下载文件：
scp test.t...
【解决】undefined reference to \'apr_thread_rwlock_destory\'、undefine...
【解决】undefined reference to 'apr_thread_rwlock_destory'、undefined reference to 'apr_initialize'undefined_reference_apr1、首选确认安装了apr及apr-util否则报错<apr-1 apr_xxx h>头文件找不到。2、-lapr-1 -laprutil-1添加库链接，否则报错：undefined reference to & 39...
How do I avoid capturing self in blocks when implementing an API?
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benzadobenzado
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The Use of Multiple JFrames: Good or Bad Practice? [closed]
...ere opening a viewer, using the 'Save As' facility to save the report as a PDF to a specific directory, using Acrobat Reader to open the PDF file, and then they would do the same with the next report. They would have multiple Acrobat Readers running with the various report outputs that they wanted t...
Getting key with maximum value in dictionary?
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A. CoadyA. Coady
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Approximate cost to access various caches and main memory?
...t deep explanation about memory hardware and software interaction.
Full PDF (114 pages)
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Seven posts on LWN + Comments
Part 1 - Introduction
Part 2 - Cache
Part 3 - Virtual Memory
Part 4 - NUMA support
Part 5 - What programmers can do
Part 6 - Mo...
c++ boost库 序列化与反序列化 - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ boost库 序列化与反序列化1、定义类 结构体序列化函数：template <typename Archive>void serialize(Archive& ar, TOrder & obj, const unsigned int ver...1、定义类/结构体序列化函数：
template <typename Archive>
void serialize(Archive& ar, TOrder & obj, const unsign...