大约有 45,000 项符合查询结果(耗时:0.0534秒) [XML]

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C++ equivalent of StringBuffer/StringBuilder?

Is there a C++ Standard Template Library class that provides efficient string concatenation functionality, similar to C#'s StringBuilder or Java's StringBuffer ? ...
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How can I trim beginning and ending double quotes from a string?

I would like to trim a beginning and ending double quote (") from a string. How can I achieve that in Java? Thanks! 17 An...
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Match two strings in one line with grep

I am trying to use grep to match lines that contain two different strings. I have tried the following but this matches lines that contain either string1 or string2 which not what I want. ...
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Default string initialization: NULL or Empty? [closed]

I have always initialized my strings to NULL, with the thinking that NULL means the absence of a value and "" or String.Empty is a valid value. I have seen more examples lately of code where String.Empty is considered the default value or represents no value. This strikes me as odd, with the newly...
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python-pandas and databases like mysql

...ndas as pd import cx_Oracle ora_conn = cx_Oracle.connect('your_connection_string') df_ora = pd.read_sql('select * from user_objects', con=ora_conn) print 'loaded dataframe from Oracle. # Records: ', len(df_ora) ora_conn.close() And here is the equivalent example for MySQLdb: import MySQLdb m...
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Most efficient way to make the first character of a String lower case?

What is the most efficient way to make the first character of a String lower case? 11 Answers ...
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Why is there no String.Empty in Java?

I understand that every time I type the string literal "" , the same String object is referenced in the string pool. 11 An...
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How do I Search/Find and Replace in a standard string?

Is there a way to replace all occurrences of a substring with another string in std::string ? 9 Answers ...
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String replacement in java, similar to a velocity template

Is there any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs. For example, the text is : ...
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Reference one string from another string in strings.xml?

I would like to reference a string from another string in my strings.xml file, like below (specifically note the end of the "message_text" string content): ...