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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
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How to pass an array within a query string?
...n the section on multi-valued keys in Query string - Wikipedia, or in the W3C docs dealing with multi-select inputs.
UPDATE
As commenters have pointed out, this is very much framework-specific. Some examples:
Query string:
?list_a=1&list_a=2&list_a=3&list_b[]=1&list_b[]=2&l...
What is the default scope of a method in Java?
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answered Apr 3 '09 at 17:01
Esko LuontolaEsko Luontola
70.3k1313 gold badges106106 silver badges124124 bronze badges
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Normalizing mousewheel speed across browsers
...he values. It has two flaws on OS X: Firefox on OS X will produce values 1/3 what they should be, and Chrome on OS X will produce values 1/40 what they should be.
// Returns +1 for a single wheel roll 'up', -1 for a single roll 'down'
var wheelDistance = function(evt){
if (!evt) evt = event;
va...
multiple prints on the same line in Python
...e that there will be an extra space at the end of the output).
The Python 3 Solution
Since the above does not work in Python 3, you can do this instead (again, without importing sys):
def install_xxx():
print("Installing XXX... ", end="", flush=True)
install_xxx()
print("[DONE]")
The p...
GroupBy pandas DataFrame and select most common value
...ata frame with three string columns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
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Convert Python dict into a dataframe
... pairs):
In [11]: pd.DataFrame(d.items()) # or list(d.items()) in python 3
Out[11]:
0 1
0 2012-07-02 392
1 2012-07-06 392
2 2012-06-29 391
3 2012-06-28 391
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In [12]: pd.DataFrame(d.items(), columns=['Date', 'DateValue'])
Out[12]:
Date DateValue
0 2012-0...
Images can't contain alpha channels or transparencies
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23 Answers
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How does IPython's magic %paste work?
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You can't copy to IPython directly. This are the steps:
Copy the lines you want to copy into ...