大约有 31,100 项符合查询结果（耗时：0.0723秒） [XML]
Laravel Eloquent ORM Transactions
...t ORM is quite nice, though I'm wondering if there is an easy way to setup MySQL transactions using innoDB in the same fashion as PDO, or if I would have to extend the ORM to make this possible?
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How can I rename a database column in a Ruby on Rails migration?
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In my opinion, in this case, it's better to use rake db:rollback, then edit your migration and again run rake db:migrate.
However, if you have data in the column you don't want to lose, then use rename_column.
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Split a string by spaces — preserving quoted substrings — in Python
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It seems that for performance reasons re is faster. Here is my solution using a least greedy operator that preserves the outer quotes:
re.findall("(?:\".*?\"|\S)+", s)
Result:
['this', 'is', '"a test"']
It leaves constructs like aaa"bla blub"bbb together as these tokens are not ...
How to encrypt/decrypt data in php?
...INARY.
The output value, like the IV, is binary; to store those values in MySQL, consider using BINARY or VARBINARY columns. If this is not an option, you can also convert the binary data into a textual representation using base64_encode() or bin2hex(), doing so requires between 33% to 100% more st...
XmlSerializer - There was an error reflecting type
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My object had a Uri field, which caused this exception; the Uri class does not have a parameterless constructor. Thanks for the tip.
– ford
Oct 28 '11 at 21:45
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Best data type for storing currency values in a MySQL database
What is the best SQL data type for currency values? I'm using MySQL but would prefer a database independent type.
9 Answer...
For every character in string
...ing throughout a pipeline or application, for the basis of this discussion my std::strings are all utf8 :p.
– Robinson
Jul 25 '14 at 11:12
4
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Is it a good practice to place C++ definitions in header files?
My personal style with C++ has always to put class declarations in an include file, and definitions in a .cpp file, very much like stipulated in Loki's answer to C++ Header Files, Code Separation . Admittedly, part of the reason I like this style probably has to do with all the years I spent coding...
Unlink of file failed
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In my case it was Skype. I'd earlier transferred the file to others and some had not yet accepted or cancelled.
– Vivek Kodira
Sep 11 '13 at 7:20
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File upload progress bar with jQuery
I am trying to implement an AJAX file upload feature in my project. I am using jQuery for this; my code submits the data using AJAX. I also want to implement a file upload progress bar. How can I do this? Is there any way to calculate how much has already been uploaded so that I can calculate the pe...