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Node.js + Express: Routes vs controller
...and required!) to set up any such opinions (patterns) on your own.
In the case of Express, you can definitely use an MVC pattern, and a route handler can certainly serve the role of a controller if you so desire--but you have to set it up that way. A great example can be found in the Express exampl...
How to remove all rows in a numpy.ndarray that contain non-numeric values
Basically, I'm doing some data analysis. I read in a dataset as a numpy.ndarray and some of the values are missing (either by just not being there, being NaN , or by being a string written " NA ").
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How to write UPDATE SQL with Table alias in SQL Server 2008?
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You can always take the CTE, (Common Tabular Expression), approach.
;WITH updateCTE AS
(
SELECT ID, TITLE
FROM HOLD_TABLE
WHERE ID = 101
)
UPDATE updateCTE
SET TITLE = 'TEST';
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Node.JS constant for platform-specific new line?
... Node.JS for a newline character that is specific to the platform the application is running on?
2 Answers
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How to check if a column exists in Pandas
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To check if one or more columns all exist, you can use set.issubset, as in:
if set(['A','C']).issubset(df.columns):
df['sum'] = df['A'] + df['C']
As @brianpck points out in a comment, set([]) can alternatively be constructed with curly braces,
if {'...
Open an IO stream from a local file or url
I know there are libs in other languages that can take a string that contains either a path to a local file or a url and open it as a readable IO stream.
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How can I specify working directory for popen
...a cwd argument to set the Current Working Directory; you'll also want to escape your backslashes ('d:\\test\\local'), or use r'd:\test\local' so that the backslashes aren't interpreted as escape sequences by Python. The way you have it written, the \t part will be translated to a tab.
So, your new...
Changing case in Vim
Is there a command in Vim that changes the case of the selected text?
2 Answers
2
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vim repeat find next character 'x'
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Is there a useful reason you can't use . for this? That was the command I expected to work.
– Daniel Kaplan
Mar 20 '15 at 22:58
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Combining a class selector and an attribute selector with jQuery
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can i combine id also? i mean like this : $('.myclass[myid="6"]')
– Rahul Pawar
Jun 10 '16 at 7:31
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