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为什么我们程序员写不出好代码? - 杂谈 - 清泛网 - 专注C/C++及内核技术
...技术细节。
当你从会议室出来后,大脑可能需要一定的转换时间,才能再重新投入到编码工作上,你很有可能需要一个小时的过渡。
2.回复所有的电子邮件
如果会议已经够糟糕的了,那么没完没了的邮件可能更让人头疼。经...
Parsing huge logfiles in Node.js - read in line-by-line
...t-stream');
var lineNr = 0;
var s = fs.createReadStream('very-large-file.csv')
.pipe(es.split())
.pipe(es.mapSync(function(line){
// pause the readstream
s.pause();
lineNr += 1;
// process line here and call s.resume() when rdy
// function below w...
How to import an excel file in to a MySQL database
...ome text format. The easiest will probably be a tab-delimited version, but CSV can work as well.
Use the load data capability. See http://dev.mysql.com/doc/refman/5.1/en/load-data.html
Look half way down the page, as it will gives a good example for tab separated data:
FIELDS TERMINATED BY '\t' ENC...
“Unicode Error ”unicodeescape" codec can't decode bytes… Cannot open text files in Python 3 [duplica
... had this same error in python 3.2.
I have script for email sending and:
csv.reader(open('work_dir\uslugi1.csv', newline='', encoding='utf-8'))
when I remove first char in file uslugi1.csv works fine.
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如何抓住痛点做出让用户尖叫的产品 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...产品经理专业度的地方,任何发现的东西要经过分析才能转换为功能、优化项,或者最后放弃了发现的内容。分析的方式和方法很多,现在越来越注重数据层面的分析。还是以微信为例,相信很多人都体验过微信群的功能,群聊...
StringUtils 字符串工具扩展:强大的文本处理工具集 · App Inventor 2 中文网
...左、右、中间)
文本填充和居中
字符串缩写
ASCII 码转换
电子邮件和 IP 地址验证
字符串相似度计算(Levenshtein 距离)
三种函数变体
扩展提供三种函数变体以满足不同需求:
变体
说...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...indows资源管理器,“查看”标签下的“大图标,小图标,列表,详细资料”
2. 设置listctrl 风格及扩展风格
LONG lStyle;
lStyle = GetWindowLong(m_list.m_hWnd, GWL_STYLE);//获取当前窗口style
lStyle &= ~LVS_TYPEMASK; //清除显示方...
How to export DataTable to Excel
...
Try simple code, to convert DataTable to excel file as csv:
var lines = new List<string>();
string[] columnNames = dataTable.Columns
.Cast<DataColumn>()
.Select(column => column.ColumnName)
.ToArray();
var header = string.Join(",", columnNames.Select...
Subset of rows containing NA (missing) values in a chosen column of a data frame
We have a data frame from a CSV file. The data frame DF has columns that contain observed values and a column ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
...
Split a string by spaces — preserving quoted substrings — in Python
...
Depending on your use case, you may also want to check out the csv module:
import csv
lines = ['this is "a string"', 'and more "stuff"']
for row in csv.reader(lines, delimiter=" "):
print(row)
Output:
['this', 'is', 'a string']
['and', 'more', 'stuff']
...
