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What is the use of style=“clear:both”?
...ment drop below any floated elements that precede it in the document.
You can also use clear:left or clear:right to make it drop below only those elements that have been floated left or right.
+------------+ +--------------------+
| | | |
| float:left | | without cl...
Git : List all unmerged changes in git
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Adding -a parameter will show local and remote branches and with -r will show only remote branches.
– pafivi
Feb 21 at 23:34
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How can I make Vim's `J` and `gq` commands use one space after a period?
... do a
:set nojoinspaces
to obtain what you desire.
Alternatively, you can toggle the setting with
:set joinspaces!
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getApplicationContext(), getBaseContext(), getApplication(), getParent()
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getApplicationContext() Application context is associated with the Application and will always be the same throughout the life cycle.
getBasecontext() should not be used, just use Context instead of it which is associated with the a...
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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