大约有 11,294 项符合查询结果（耗时：0.0183秒） [XML]
Writing to an Excel spreadsheet
...a from my program to a spreadsheet. I've searched online and there seem to be many packages available (xlwt, XlsXcessive, openpyxl). Others suggest to write to a .csv file (never used CSV and don't really understand what it is).
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MySQL Error 1215: Cannot add foreign key constraint
I am trying to forward engineer my new schema onto my db server, but I can't figure out why I am getting this error. I've tried to search for the answer here, but everything I've found has said to either set the db engine to Innodb or to make sure the keys I'm trying to use as a foreign key are pri...
Better techniques for trimming leading zeros in SQL Server?
I've been using this for some time:
15 Answers
15
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Abstract Class vs Interface in C++ [duplicate]
This is a general question about C++. As you know, there is no clear distinction between interface and abstract class in C++ unlike Java and C#. When would it be more preferrable to use an interface instead of an abstract class in C++? Could you give some examples?
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How to shut down the computer from C#
What's the best way to shut down the computer from a C# program?
16 Answers
16
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Why does Boolean.ToString output “True” and not “true”
Is there a valid reason for it being "True" and not "true"? It breaks when writing XML as XML's boolean type is lower case , and also isn't compatible with C#'s true/false (not sure about CLS though).
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Copy/duplicate database without using mysqldump
...t local access to the server, is there any way to duplicate/clone a MySQL db (with content and without content) into another without using mysqldump ?
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“using namespace” in c++ headers
...std; right after the #include s in their .h files. This seems to me to be dangerous since then by including that header in another program I will get the namespace imported into my program, maybe without realizing, intending or wanting it (header inclusion can be very deeply nested).
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Twitter Bootstrap - add top space between rows
How to add margin top to class="row" elements using twitter bootstrap framework?
19 Answers
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clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
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You can tell clang to not raise this as an error by setting the following environment variables prior compilation:
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments
Then pip install psycopg2should work.
I had the same when trying to pip install lxml.
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