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Makefile经典教程(入门必备) - C/C++ - 清泛网移动版 - 专注C++内核技术

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...
https://www.tsingfun.com/it/cp... 

Makefile经典教程(入门必备) - C/C++ - 清泛网移动版 - 专注C++内核技术

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...
https://www.tsingfun.com/it/cp... 

Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注C/C++及内核技术

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...
https://www.tsingfun.com/it/cp... 

Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注C/C++及内核技术

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...
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Lazy Method for Reading Big File in Python?

..., you can to use the file object itself as lazy generator: with open('big.csv') as f: for line in f: process(line) However, I once ran into a very very big (almost) single line file, where the row separator was in fact not '\n' but '|'. Reading line by line was not an option, but I ...
https://www.tsingfun.com/it/cp... 

Makefile经典教程(入门必备) - C/C++ - 清泛网移动版 - 专注C/C++及内核技术

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...
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Create an empty data.frame

...ames) Alternatively specifying the col.names as a string: df <- read.csv(text="Date,File,User", colClasses = colClasses) Thanks to Richard Scriven for the improvement share | improve this an...
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Change one value based on another value in pandas

...re. Assuming you can load your data directly into pandas with pandas.read_csv then the following code might be helpful for you. import pandas df = pandas.read_csv("test.csv") df.loc[df.ID == 103, 'FirstName'] = "Matt" df.loc[df.ID == 103, 'LastName'] = "Jones" As mentioned in the comments, you c...
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How can I transform string to UTF-8 in C#?

... Use the below code snippet to get bytes from csv file protected byte[] GetCSVFileContent(string fileName) { StringBuilder sb = new StringBuilder(); using (StreamReader sr = new StreamReader(fileName, Encoding.Default, true)) { St...
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Include headers when using SELECT INTO OUTFILE?

...ment with lucek's answer and export dynamically table with columns name in CSV : --If your table has too many columns SET GLOBAL group_concat_max_len = 100000000; --Prepared statement SET @SQL = ( select CONCAT('SELECT * INTO OUTFILE \'YOUR_PATH\' FIELDS TERMINATED BY \',\' OPTIONALLY ENCLOSED BY \...