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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
...te: Now that it's 2016 I'd use PowerShell for this unless there's a really compelling backwards-compatible reason for it, particularly because of the regional settings issue with using date . See @npocmaka's https://stackoverflow.com/a/19799236/8479
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How to find out which package version is loaded in R?
I am in a process of figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
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Moving project to another folder in Eclipse
I generally have my working projects sitting on folders on my Desktop. When they are completed I just move them to a c:\dev\ . The thing is I'm doing it in a rather archaic way.
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Import SQL file into mysql
I have a database called nitm . I haven't created any tables there. But I have a SQL file which contains all the necessary data for the database. The file is nitm.sql which is in C:\ drive . This file has size of about 103 MB. I am using wamp server.
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Is errno thread-safe?
In errno.h , this variable is declared as extern int errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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When would anyone use a union? Is it a remnant from the C-only days?
I have learned but don't really get unions. Every C or C++ text I go through introduces them (sometimes in passing), but they tend to give very few practical examples of why or where to use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming ...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
I'm looking for a HTML or ASCII character which is a triangle pointing up or down so that I can use it as a toggle switch.
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What's the difference between array_merge and array + array?
A fairly simple question. What's the difference between:
9 Answers
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浅谈APM在电子交易系统中的应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
浅谈APM在电子交易系统中的应用百度定义的APMAPM = Application Performance Management，应用性能管理，对企业系统即时监控以实现对应用程序性能管理和故障管理的系...百度定义的APM
APM = Application Performance Management，应用性能管理，...
Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...失败的就放弃发送。postfix发信的频率控制有几个:
smtpd_client_connection_rate_limit=5
ip地址连接的频率控制.
smtpd_client_message_rate_limit=5
客户端发送邮件的频率控制.(某种情况下smtpd_client_message_rate_limit和 smtpd_client_connection_rate_limit的效...