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Can enums be subclassed to add new elements?
I want to take an existing enum and add more elements to it as follows:
15 Answers
15
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How to add anything in through jquery/javascript?
I'm working with a CMS, which prevents editing HTML source for <head> element.
8 Answers
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How to communicate between iframe and the parent site?
The website in the iframe isn't located in the same domain , but both are mine, and I would like to communicate between the iframe and the parent site. Is it possible?
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Match whitespace but not newlines
I sometimes want to match whitespace but not newline.
6 Answers
6
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How to determine whether a Pandas Column contains a particular value
... entry in a Pandas column that has a particular value. I tried to do this with if x in df['id'] . I thought this was working, except when I fed it a value that I knew was not in the column 43 in df['id'] it still returned True . When I subset to a data frame only containing entries matching the ...
What are the differences between “=” and “
...ons in a braced list of expressions.
Let’s not put too fine a point on it: the R documentation is (subtly) wrong [1]. This is easy to show: we just need to find a counter-example of the = operator that isn’t (a) at the top level, nor (b) a subexpression in a braced list of expressions (i.e. {...
How to get evaluated attributes inside a custom directive
...ttribute from my custom directive, but I can't find the right way of doing it.
5 Answers
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Why does one often see “null != variable” instead of “variable != null” in C#?
...ifference in the excecution speed for the order in which you state the condition?
9 Answers
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PreparedStatement IN clause alternatives?
What are the best workarounds for using a SQL IN clause with instances of java.sql.PreparedStatement , which is not supported for multiple values due to SQL injection attack security issues: One ? placeholder represents one value, rather than a list of values.
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Which comment style should I use in batch files?
I've been writing some batch files, and I ran into this user guide , which has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says:
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