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How can I clear or empty a StringBuilder? [duplicate]
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781
Two ways that work:
Use stringBuilderObj.setLength(0).
Allocate a new one with new StringBuild...
Limit ggplot2 axes without removing data (outside limits): zoom
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Trying to load jquery into tampermonkey script
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image processing to improve tesseract OCR accuracy
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Remove duplicate entries using a Bash script [duplicate]
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417
You can sort then uniq:
$ sort -u input.txt
Or use awk:
$ awk '!a[$0]++' input.txt
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windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
...de编码的长度
len=MultiByteToWideChar(CP_ACP,0,(char *)m_string, -1, NULL,0);//cp_acp指示了转换为unicode编码的编码类型
w_string=(wchar_t *)malloc(2*len+2);
memset(w_string,0,2*len+2);
//ansi到unicode转换
MultiByteToWideChar(CP_ACP, 0, (char *)m_string,-1,...
Python Pandas: Get index of rows which column matches certain value
... pd.DataFrame({'BoolCol': [True, False, False, True, True]},
index=[10,20,30,40,50])
In [53]: df
Out[53]:
BoolCol
10 True
20 False
30 False
40 True
50 True
[5 rows x 1 columns]
In [54]: df.index[df['BoolCol']].tolist()
Out[54]: [10, 40, 50]
If you want to use the index...
Error in : object of type 'closure' is not subsettable
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In general this error message means that you have tried to use indexing on a function. You ca...