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GraphViz - How to connect subgraphs?
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edited Mar 18 at 20:39
André C. Andersen
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How to check whether a pandas DataFrame is empty?
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Dave Thomas
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answered Nov 7 '13 at 5:55
aIKidaIKid
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Google access token expiration time
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The spec says seconds:
http://tools.ietf.org/html/draft-ietf-oauth-v2-22#section-4.2.2
expires_in
OPTIONAL. The lifetime in seconds of the access token. For
example, the value "3600" denotes that the access token will
expire in one hour from the time the response was generated....
Convert object to JSON in Android
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281
Most people are using gson : check this
Gson gson = new Gson();
String json = gson.toJson(myO...
Remove leading or trailing spaces in an entire column of data
...-+---------------------+
So to do the whole column...
1) Insert a column
2) Insert TRIM function pointed at cell you are trying to correct.
3) Copy formula down the page
4) Copy inserted column
5) Paste as "Values"
Should be good to go from there...
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How does numpy.histogram() work?
...s aren't of equal width) of each bar.
In this example:
np.histogram([1, 2, 1], bins=[0, 1, 2, 3])
There are 3 bins, for values ranging from 0 to 1 (excl 1.), 1 to 2 (excl. 2) and 2 to 3 (incl. 3), respectively. The way Numpy defines these bins if by giving a list of delimiters ([0, 1, 2, 3]) in...
SQL update trigger only when column is modified
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128
You have two way for your question :
1- Use Update Command in your Trigger.
ALTER TRIGGER [db...
Does Ruby regular expression have a not match operator like “!~” in Perl?
...theless, it works:
irb(main):001:0> 'x' !~ /x/
=> false
irb(main):002:0> 'x' !~ /y/
=> true
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