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How to check if field is null or empty in MySQL?
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194
Either use
SELECT IF(field1 IS NULL or field1 = '', 'empty', field1) as field1
from tablenam...
Convert XmlDocument to String
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182
There aren't any quotes. It's just VS debugger. Try printing to the console or saving to a fil...
CleanWPPAllFilesInSingleFolder error makes my project no longer load
Using VS2012 I created a dynamic data project. It all worked and then I started configuring the web deployment settings. I am not sure what setting I changed exactly as there was no error. However when I try and load the solution I get the following error for the project and it will no longer load.
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String formatting in Python 3
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174
Here are the docs about the "new" format syntax. An example would be:
"({:d} goals, ${:d})".f...
Convert columns to string in Pandas
...will convert keys to valid json (and therefore your keys to strings):
In [11]: df = pd.DataFrame([['A', 2], ['A', 4], ['B', 6]])
In [12]: df.to_json()
Out[12]: '{"0":{"0":"A","1":"A","2":"B"},"1":{"0":2,"1":4,"2":6}}'
In [13]: df[0].to_json()
Out[13]: '{"0":"A","1":"A","2":"B"}'
Note: you can p...
Concatenating string and integer in python
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178
Modern string formatting:
"{} and {}".format("string", 1)
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Which is better: … or …
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139
Do you need a type attribute at all? If you're using HTML5, no. Otherwise, yes. HTML 4.01 and ...
Notification passes old Intent Extras
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answered Sep 10 '11 at 8:06
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How to do error logging in CodeIgniter (PHP)
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181
CodeIgniter has some error logging functions built in.
Make your /application/logs folder wr...
How do you pass arguments to define_method?
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198
The block that you pass to define_method can include some parameters. That's how your defined...