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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...
ObjectIds are generated client-side in a manner similar to UUID but with some nicer properties for storage in a database such as roughly increasing order and encoding their creation time for free. The key thing for your use case is that they are designed to guarantee uniqueness to a ...
Change SVN repository URL
...$ svn relocate NEW_SERVER
svn: E195009: The repository at 'NEW_SERVER' has uuid 'e7500204-160a-403c-b4b6-6bc4f25883ea', but the WC has '3a8c444c-5998-40fb-8cb3-409b74712e46'
I did not want to redownload the whole repository, so I found a workaround. It worked in my case, but generally I can imagin...
RegEx to extract all matches from string using RegExp.exec
...matches:
var re = /\s*([^[:]+):\"([^"]+)"/g;
var s = '[description:"aoeu" uuid:"123sth"]';
var m;
do {
m = re.exec(s);
if (m) {
console.log(m[1], m[2]);
}
} while (m);
Try it with this JSFiddle: https://jsfiddle.net/7yS2V/
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How can I create a temp file with a specific extension with .NET?
...0−11), equivalent to the odds of
creating a few tens of trillions of
UUIDs in a year and having one
duplicate. In other words, only after
generating 1 billion UUIDs every
second for the next 100 years, the
probability of creating just one
duplicate would be about 50%. The
probabili...
How to choose the id generation strategy when using JPA and Hibernate
...e identifiers of type long, short or int, given a named database sequence.
uuid
uses a 128-bit UUID algorithm to generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length.
guid
uses a database-gen...
Windows远程桌面授权错误（授权超时）等报错信息疑难解答 - 更多技术 - 清...
Windows远程桌面授权错误（授权超时）等报错信息疑难解答windows_rdp_error_resolve由于无法升级或续订本地计算机的客户端访问许可证，远程会话被中断。
由于授权协议出错，远程计算机中断了会话。
由于授权协议中发生网络问题...
REST API 404: Bad URI, or Missing Resource?
...he http://mywebsite/api/user part anyway. A better remedy would be to use UUID's. i.e. http://mywebsite/api/user/3dd5b770-79ea-11e1-b0c4-0800200c9a66 is better than http://mywebsite/api/user/14. Doing that, you could use your technique of returning 200's without giving much away.
...
How should equals and hashcode be implemented when using JPA and Hibernate
...y you can't rely on id for equality.
Another option is to switch to using UUID identifiers, assigned by the application logic. This way, you can use the UUID for the equals/hashCode because the id is assigned before the entity gets flushed.
You can even use the entity identifier for equals and has...
Python read-only property
...ject's dictionary directly, I've introduced "extreme" name mangling:
from uuid import uuid4
class Read_Only_Property:
def __init__(self, name):
self.name = name
self.dict_name = uuid4().hex
self.initialized = False
def __get__(self, instance, cls):
if insta...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
Ora-00257 错误处理一列sqlplus assysdba报错ORA-12162切回系统确认系统当前的ORACLE_HOME和ORACLE_SID环境变量[oracle@asdlabdb01~]$echo$ORACLE_HOME空的[oracle...sqlplus /as sysdba
报错ORA-12162
切回系统
确认系统当前的ORACLE_HOME和ORACLE_SID环境变量
[oracle...