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CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
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GVIS_FOCUSED
单元格成为焦点
GVIS_SELECTED
单元格被选中
GVIS_DROPHILITED
单元格被高亮显示
GVIS_READONLY
单元格只读
GVIS_FIXED
单元格固定
GVIS_FIXED...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...EASY_OK,则signal信号量，从而工作线程被唤醒。
典型的，select请求这种需要回复多个包给MySQL客户端的场景使用的都是这种模式
其它诸如只需要回复一个包给MySQL客户端的DML操作，例如INSERT,UPDATE等也使用这种模式，只是工作线程...
What is the list of supported languages/locales on Android?
...ble for application development (they may not necessarily be available for selection in a given device's system settings, though). When using ISO 639-1 codes, the resource folder has the format values-xx... where xx is the ISO-639-1 code.
When using BCP 47 tags, the resource folder is named valu...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个）。
reactor模式，实现自己的多路复用NIO机制（epoll，select，kqueue等）
单线程处理多任务
数据结构
hash+bucket结构，当链表的长度过长时，会采取迁移的措施（扩展原来两倍的hash表，把数据迁移过去，expand+rehash）
持久化存...
Use 'import module' or 'from module import'?
...ind a comprehensive guide on whether it is best to use import module or from module import . I've just started with Python and I'm trying to start off with best practices in mind.
...
How to send email attachments?
...
Here's another:
import smtplib
from os.path import basename
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mai...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...
Let's get one thing out of the way first. The explanation that yield from g is equivalent to for v in g: yield v does not even begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warrant adding yield from ...
NSRange to Range
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@Zaph: since the range comes from the UITextField, which is written in Obj-C against NSString, I suspect that only valid ranges based on the unicode characters in the string would be provided by the delegate callback, and so this is safe to use, but I ha...
`from … import` vs `import .` [duplicate]
...
It depends on how you want to access the import when you refer to it.
from urllib import request
# access request directly.
mine = request()
import urllib.request
# used as urllib.request
mine = urllib.request()
You can also alias things yourself when you import for simplicity or to avoid ma...
What is the usefulness of `enable_shared_from_this`?
I ran across enable_shared_from_this while reading the Boost.Asio examples and after reading the documentation I am still lost for how this should correctly be used. Can someone please give me an example and explanation of when using this class makes sense.
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