Real
纯虚数满足什么条件？
纯虚阈值为a=O，b不等于0。如果a=1，z=2i是纯虚数，它认为如果z是纯虚数，那么a10，a2-1=0，解是a=1，所以a=1。是复数“z=a^ 2-1i是纯虚数”的充要阈值。[详细]
2022-12-27 13:21 分类：问答How to tell if a caught IOException is caused by the file being used by another process, without resorting to parsing the exception's Message property
When I open a file, I want to know if it is being used by another process so I can perform special handling; any other IOException I will bubble up. An IOException\'s Message property contains \"The p[详细]
2022-12-25 18:19 分类：问答function not working in production mode
I am using the rvideo gem to transcode files to a .flv format. class Video < ActiveRecord::Base include AASM[详细]
2022-12-23 23:42 分类：问答real recognize real是什么意思？
认真而真实的理解。就文字而言，真正的认实意味着真正的认真，但在汉语中，它意味着孜孜不倦、真实细致。承认意味着承认；理解；承认；真实意味着真实；真；真的。[详细]
2022-12-22 18:24 分类：问答Post-build step in Eclipse CDT
Eclipse SDK 3.5.1, CDT. I have the following workspace tree: Bin (just d开发者_StackOverflow社区irectory)[详细]
2022-12-21 03:27 分类：问答Is there a framework that works the way like updating a virus definition database?
my distributed program need update couple of files, i would like it to work the way like those anti virus software updating there virus definition database, is there such framework?[详细]
2022-12-21 03:00 分类：问答IS vs AS keywords for PL/SQL Oracle Function or Procedure Creation [duplicate]
This question already has answers here: What is the difference between "AS" and "IS" in an Oracle stored procedure?[详细]
2022-12-21 02:47 分类：问答Several UIAlertViews for a delegate
Currently I\'ve got a class popping up UIAlertViews here and there. Currently, the same class is the delegate for these (it\'s very logical that it would be). Unfortunately, these UIAlertViews will ca[详细]
2022-12-21 02:41 分类：问答Why tee’d variables aren’t visible in later scripblocks?
Someone knows for which strange reason Powershell doesn\'t show de \'tee\'d\' variable in the following snippet?[详细]
2022-12-21 02:35 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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