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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...强引用如此之强
在一个程序里，将一个类设置成不可被扩展是有点不太常见的，当然这个完全可以通过类标记成final实现。或者也可以更加复杂一些，就是通过内部包含了未知数量具体实现的工厂方法返回一个接口(Interface)。举...
Split a string by a delimiter in python
...he variable ev contains this string and we apply separator '@':
Sa., 23. März@19:00@Klavier + Orchester: SPEZIAL
Then, after split operation the variable
date will have value "Sa., 23. März"
time will have value "19:00"
event_name will have value "Klavier + Orchester: SPEZIAL"
...
Setting the correct encoding when piping stdout in Python
... you receive, and encode what you send.
# -*- coding: utf-8 -*-
print u"åäö".encode('utf-8')
Another didactic example is a Python program to convert between ISO-8859-1 and UTF-8, making everything uppercase in between.
import sys
for line in sys.stdin:
# Decode what you receive:
line ...
How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...e the same tool to convert it the other way?
– Olle Härstedt
Sep 26 '18 at 9:18
yes, looks like you're looking at: s...
MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
...-master-data=1 > data.sql
有了数据文件，传输到从服务器上并导入：
shell> mysql < data.sql
当然，整个过程也可以利用管道符一次性操作：
shell> mysqldump --host=<MASTER_HOST> ... | mysql --host=<SLAVE_HOST> ...
因为我们开始设置了master-data=1，...
When to use Spring Integration vs. Camel?
...nswered Jan 11 '12 at 9:00
Kai WähnerKai Wähner
4,16044 gold badges2929 silver badges3131 bronze badges
...
INSERT IF NOT EXISTS ELSE UPDATE?
...when the name and age are both the same?
– Arnaud Aliès
Sep 16 '16 at 8:35
This should be the solution... if you are ...
Multi-line string with extra space (preserved indentation)
...Jul 4 '18 at 7:49
Frank-Rene SchäferFrank-Rene Schäfer
2,3871414 silver badges3535 bronze badges
How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]
... ISO 8601 datetime like 20160628T100000.
– Seppo Erviälä
Jun 28 '16 at 13:01
4
Oh dear, Python....
In Python, how do I determine if an object is iterable?
...nswered Apr 10 at 11:24
Pekka KlärckPekka Klärck
1,99311 gold badge1616 silver badges1919 bronze badges
...