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How to delete a word and go into insert mode in Vim?
...ter, try: "change inner { block" and "change a { block".
Documentation at http://vimdoc.sourceforge.net/htmldoc/motion.html#text-objects
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Pandas dataframe get first row of each group
...nth(0) is the same as first()):
df.groupby('id').nth(1)
Documentation: http://pandas.pydata.org/pandas-docs/stable/groupby.html#taking-the-nth-row-of-each-group
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Difference between Fact table and Dimension table?
.... The quantity sold, the price per item, total price, and so on.
Source:
http://arcanecode.com/2007/07/23/dimensions-versus-facts-in-data-warehousing/
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Peak-finding algorithm for Python/SciPy
...ur needs, however I don't have experience with it so I cannot recommend..
http://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.find_peaks_cwt.html
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How can I rename a field for all documents in MongoDB?
...ral syntax of this is
db.collection.updateMany(filter, update, options)
https://docs.mongodb.com/manual/reference/method/db.collection.updateMany/
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Java NIO FileChannel versus FileOutputstream performance / usefulness
...ere are the blog links on archive.org: web.archive.org/web/20120815094827/http://geekomatic.ch/2008/… web.archive.org/web/20120821114802/http://geekomatic.ch/2009/…
– Arthur Edelstein
May 16 '13 at 2:34
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What is a tracking branch?
...nd branches. This often referenced link web.archive.org/web/20130419172453/http://www.gitguys.com/… distinguishes between "tracking branches" & "remote tracking branches". They call origin/master a "remote tracking branch" - I agree - but then they call "master" a "tracking branch" too. What i...
how to exclude null values in array_agg like in string_agg using postgres?
... x
) un
WHERE
u IS NOT NULL;
The second:
/*
With reference to
http://ejrh.wordpress.com/2011/09/27/denormalisation-aggregate-function-for-postgresql/
*/
CREATE OR REPLACE FUNCTION fn_array_agg_notnull (
a anyarray
, b anyelement
) RETURNS ANYARRAY
AS $$
BEGIN
IF b IS NOT NU...
Update parent scope variable in AngularJS
...entobj.parentproperty = "this WILL modify the parent";
});
Working demo: http://jsfiddle.net/sh0ber/xxNxj/
See What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
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Command to get time in milliseconds
Is there a shell command in Linux to get the time in milliseconds?
12 Answers
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