大约有 1,210 项符合查询结果(耗时:0.0158秒) [XML]

https://www.tsingfun.com/it/bigdata_ai/1075.html 

记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...oDB本身有一个mongoimport工具可供使用,不过它只接受json、csv等格式的源文件,不适合我的需求,所以我没用,而是用PHP写了一个脚本,平稳运行了一段时间后,我发现数据导入的速度下降了,同时PHP抛出异常: cursor timed out (time...
https://www.tsingfun.com/ilife/idea/556.html 

泡在Stack Overflow答题30天 - 创意 - 清泛网 - 专注C/C++及内核技术

...。 是时候回报Stack Overflow了! 目标 某天我在浏览徽章列表时发现,可以通过连续30天访问网站而获得一枚银色勋章。于是我决定将这个作为我的目标,通过30天不间断地浏览网站并且达到1000威望值。但我将只回答问题而不提...
https://www.tsingfun.com/it/tech/1215.html 

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

...,同时client监听zookeeper的/routers节点并缓存在线router节点列表。 3) HA 传统实现HA的做法一般是采用虚拟IP漂移,结合Heartbeat、keepalived等实现HA, Keepalived使用vrrp方式进行数据包的转发,提供4层的负载均衡,通过检测vrrp数据包来...
https://stackoverflow.com/ques... 

Where are the PostgreSQL logs on macOS?

... hmm, in my case it's stderr :/ sql result as csv here: pastebin.com/20C92z2v – basilikode Apr 3 '10 at 10:47 ...
https://www.tsingfun.com/it/cpp/708.html 

汇编语言超浓缩教程(汇编入门必备) - C/C++ - 清泛网 - 专注C/C++及内核技术

...,如不改就ENTER    Source listing [NUL.LST]: ← 是否需要列表文件(LST),不需要就ENTER    Cross-reference [NUL.CRF]: ←是否需要对照文件(CRF),不需要则ENTER    50162 + 403867 Bytes symbol space free    0 Warning Errors ←警告错...
https://stackoverflow.com/ques... 

Format / Suppress Scientific Notation from Python Pandas Aggregation Results

... 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() share | ...
https://stackoverflow.com/ques... 

Text Editor which shows \r\n? [closed]

... 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 ...
https://www.tsingfun.com/it/os... 

Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...失灵了,是怎么回事? 此时,我们使用 ps 查看进程列表,可以看到卡住的进程状态显示为 D。 man ps 中描述 D 状态是 Uninterruptible Sleep。 Linux 进程有两种睡眠状态: Interruptible Sleep,可中断睡眠,在 ps 命令中显示 S。处...
https://stackoverflow.com/ques... 

What are the differences among grep, awk & sed? [duplicate]

...le name lists. Awk is an entire programming language built around reading CSV-style files, processing the records, and optionally printing out a result data set. It can do many things but it is not the easiest tool to use for simple tasks. Sed is useful when you want to make changes to a file base...
https://stackoverflow.com/ques... 

Change the name of a key in dictionary

...dictionary comprehension: This is an example I encountered while reading a CSV using a DictReader. The user had suffixed all the column names with ':' ori_dict = {'key1:' : 1, 'key2:' : 2, 'key3:' : 3} to get rid of the trailing ':' in the keys: corrected_dict = { k.replace(':', ''): v for k, v i...