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Convert Django Model object to dict with all of the fields intact
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Should each and every table have a primary key?
...ll fields involved in the link. Thus you ensure that you don't have two or more records describing one link.
Besides the logical consistency issues, most RDBMS engines will benefit from including these fields in a unique index.
And since any primary key involves creating a unique index, you should...
Best cross-browser method to capture CTRL+S with JQuery?
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Key codes can differ between browsers, so you may need to check for more than just 115.
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How to set Sqlite3 to be case insensitive when string comparing?
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How to extract one column of a csv file
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How to dismiss keyboard for UITextView with return key?
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Database Structure for Tree Data Structure
...ach discussed in the article is the nested set model. This approach is far more efficient and flexible. Refer to the article for detailed explanation and example queries.
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Pandas - Get first row value of a given column
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df_test.iloc[0]['Btime'] works, df_test['Btime'].iloc[0] is a little bit
more efficient.
There is a big difference between the two when it comes to assignment.
df_test['Btime'].iloc[0] = x affects df_test, but df_test.iloc[0]['Btime']
may not. See below for an explanation of why. Because a subtl...