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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...上就是对switch语句的反汇编，最重要的是理解了switch的跳转表的结构就能重新刻画出switch的结构了，问题就迎刃而解了。可以看到1中最后call 08048878<sscanf@plt>，猜测sscanf可能是C语言的内部函数，于是查到其定义为：int sscanf(const c...
Convert Pandas column containing NaNs to dtype `int`
I read data from a .csv file to a Pandas dataframe as below. For one of the columns, namely id , I want to specify the column type as int . The problem is the id series has missing/empty values.
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Replacing blank values (white space) with NaN in pandas
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If you are exporting the data from the CSV file it can be as simple as this :
df = pd.read_csv(file_csv, na_values=' ')
This will create the data frame as well as replace blank values as Na
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access denied for load data infile in MySQL
...s code works for me:
File tempFile = File.createTempFile(tableName, ".csv");
FileUtils.copyInputStreamToFile(data, tempFile);
JdbcTemplate template = new JdbcTemplate(dataSource);
String path = tempFile.getAbsolutePath().replace('\\', '/');
int rows = template.update(MessageFor...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...适用于集成员名和属性名等的命名。
Member_list是集成员列表。如果集成员放在集定义中，那么对它们可采取显式罗列和隐式罗列两种方式。如果集成员不放在集定义中，那么可以在随后的数据部分定义它们。
① 当显式罗列成...
Read first N lines of a file in python
...he best, but for example if N=1000:
import pandas as pd
yourfile = pd.read_csv('path/to/your/file.csv',nrows=1000)
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How do I get currency exchange rates via an API such as Google Finance? [closed]
...se refer to finance.yahoo.com.
Request: http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s=USDINR=X
This CSV was being used by a jQuery plugin called [Curry][1]. Curry has since (2017-08-29) moved to use fixer.io instead due to stability issues.
Might be useful if you need more than j...
Is there a way to ignore header lines in a UNIX sort?
... pass the input in a second time to the sed command, like this: cat sortMe.csv | (sed 1q sortMe.csv; sort -t, -k3 -rn) > sorted.csv
– Harry Cramer
Jun 5 at 3:00
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C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...list 它用尖括号<> 一个小于号和一个大于号括起来.
该列表是模板参数表不能为空,模板参数可以是一个模板类型参数template type
parameter 它代表了一种类型,也可以是一个模板非类型参数template nontype parameter
它代表了一个...
Tools for Generating Mock Data? [closed]
...t can generate larges data set (unlimited size)
it supports various input (CSV, Flat Files, DBUnit) and output format (CSV, Flat Files, DBUnit, XML, Excel, Scripts)
it can be used on the command line or through a maven plugin
it's open source and customizable
I would give it a try.
BTW, a list of...