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boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...修改iterator指向的元素，看如下代码：
Student& stu = const_cast<Student&>(*it);
stu.stu_couselist.insert( Course::courses[Course::CourseNum_Maths] );
通过const_cast去掉了it的const性质，可以直接修改it了，但是如果你这样做了，你就必须为你接下来的...
How does delete[] know it's an array?
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try size_t size = *(reinterpret_cast<size_t *>(pArray) - 1) instead
– user6377043
Aug 12 '17 at 11:42
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How do you determine the size of a file in C?
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You could probably change the return type to ssize_t and cast the size from an off_t without any trouble. It would seem to make more sense to use a ssize_t :-) (Not to be confused with size_t which is unsigned and cannot be used to indicate error.)
– Ted Perci...
Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
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openssl:Error: '-config' is an invalid command. how do you guys set it?
– benez
Dec 17 '15 at 14:01
1
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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...动App的强大工具
【通知】Notifier 通知扩展：功能强大的Android通知管理工具
【媒体通知】MediaNotification 媒体通知扩展：管理媒体播放器通知，支持播放控制
【唤醒】KeepAwake 保持唤醒扩展：防止App被操作系统停用
AI...
How should I choose an authentication library for CodeIgniter? [closed]
I see there are a few . Which ones are maintained and easy to use? What are their pros and cons?
11 Answers
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Java: Date from unix timestamp
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The cast to (long) is very important: without it the integer overflows.
– mneri
Jun 11 '14 at 17:18
2
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How to read/write a boolean when implementing the Parcelable interface?
... No reason to use byte over int. byte is more verbose because of the cast: dest.writeInt(myBoolean ? 1 : 0);
– miguel
Jan 17 '15 at 2:31
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Copy entire contents of a directory to another using php
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It seems that copy only handle single files. Here is a function for copying recursively I found in this note on the copy documentation page:
<?php
function recurse_copy($src,$dst) {
$dir = opendir($src);
@mkdir($dst);
while(false ...
How to determine if a string is a number with C++?
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You can do it the C++ way with boost::lexical_cast. If you really insist on not using boost you can just examine what it does and do that. It's pretty simple.
try
{
double x = boost::lexical_cast<double>(str); // double could be anything with >> operato...