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Are single quotes allowed in HTML?
...es in HTML become so popular?. Single quotes around attributes in HTML are and always have been permitted by the specification. I don't think any browsers wouldn't understand them.
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How to check if field is null or empty in MySQL?
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end as field1
from tablename
If you only want to check for null and not for empty strings then you can also use ifnull() or coalesce(field1, 'empty'). But that is not suitable for empty strings.
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How to elegantly ignore some return values of a MATLAB function?
..., c=3
Now the key here is that if you use an variable twice in the left hand side of a multiple-expression assignment, an earlier assignment is clobbered by the later assignment:
[b,b,c]=Func3();
% yields b=2, c=3
[c,c,c]=Func3();
% yields c=3
(edit: just to check, I also verified that this te...
add a string prefix to each value in a string column using Pandas
... like to append a string to the start of each value in a said column of a pandas dataframe (elegantly).
I already figured out how to kind-of do this and I am currently using:
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Getting all names in an enum as a String[]
What's the easiest and/or shortest way possible to get the names of enum elements as an array of String s?
20 Answers
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WPF Databinding: How do I access the “parent” data context?
...tained in a window. The window's DataContext has two properties, Items and AllowItemCommand .
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How can I obtain an 'unbalanced' grid of ggplots?
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I tried figuring it out with grid and thought I had it down but ended up failing (although looking now at the code in the function I cite below, I can see that I was really close ... :-)
The 'wq' package has a layOut function that will do it for you:
p1 <...
How to verify that a specific method was not called using Mockito?
...is there §4 "Verifying exact number of invocations / at least x / never", and the never javadoc is here.
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How to test if a string is JSON or not?
I have a simple AJAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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Can someone explain the HTML5 aria-* attribute?
...know what the aria-* attributes are used for. What values can they have, and are they defined values or can I create my own values?
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