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What are the effects of exceptions on performance in Java?
...performances are not a concern...
– Jean-Baptiste Yunès
Aug 4 '17 at 15:45
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
.../rc.d/init.d/iptables save
这样就可以写到/etc/sysconfig/iptables文件里了.写入后记得把防火墙重起一下,才能起作用.
[root@tp ~]# service iptables restart
现在IPTABLES配置表里什么配置都没有了,那我们开始我们的配置吧
(3)设定预设规则
[ro...
Copying files from host to Docker container
...ng aka has run before. Tar below works nice.
– Eino Mäkitalo
Apr 23 '15 at 6:34
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The only way t...
Is there any good dynamic SQL builder library in Java? [closed]
...I am also in the company behind Querydsl
– Timo Westkämper
Apr 12 '11 at 5:55
We use Querydsl SQL in a few of our in ...
How to hide first section header in UITableView (grouped style)
... Apr 18 '18 at 15:24
Linus Unnebäck
14k99 gold badges5959 silver badges7575 bronze badges
answered Sep 27 '13 at 19:41
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ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
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ZMQ 不仅能通过 TCP 完成节点间的通信，也可以通过 Socket 文件完成进程间的通信。如图 7 所示，我们 fork 三个 PHP 进程，将进程 1 的数据，通过 Socket 文件发送到进程3。
图7：进程间的通信
<?php
function step1() {
$cont...
How can I validate a string to only allow alphanumeric characters in it?
...typically is A-Z, a-z and 0-9). This answer allows local characters like åäö.
Update 2018-01-29
The syntax above only works when you use a single method that has a single argument of the correct type (in this case char).
To use multiple conditions, you need to write like this:
if (yourText.Al...
Format / Suppress Scientific Notation from Python Pandas Aggregation Results
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If you would like to use the values, say as part of csvfile csv.writer, the numbers can be formatted before creating a list:
df['label'].apply(lambda x: '%.17f' % x).values.tolist()
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Text Editor which shows \r\n? [closed]
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I really like the command od -c filename.csv. This one is working on the Terminal app. dr-palaniraja.blogspot.ca/2011/06/…
– M. Beausoleil
Dec 29 '16 at 17:16
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Make an existing Git branch track a remote branch?
...our upstream is called origin and not upstream.
– umläute
Aug 11 '15 at 14:21
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