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How can I determine the type of an HTML element in JavaScript?
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Go: panic: runtime error: invalid memory address or nil pointer dereference
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Django - filtering on foreign key properties
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FragsworthFragsworth
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Create an index on a huge MySQL production table without table locking
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Serializing an object to JSON
...łakowski
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answered Feb 17 '09 at 20:16
Mike_GMike_G
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Is it safe to delete an object property while iterating over them?
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The ECMAScript 5.1 standard section 12.6.4 (on for-in loops) says:
Properties of the object being enumerated may be deleted during enumeration. If a property
that has not yet been visited during enumeration is deleted, then it will not be visited. If new prop...
Fixed stroke width in SVG
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Zach Saucier
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answered Aug 20 '09 at 7:49
Erik DahlströmE...
Pandas aggregate count distinct
...about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user_id": pd.Ser...
Get time difference between two dates in seconds
... or enum
– zaffaste
Mar 10 '16 at 8:41
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Java: Best way to iterate through a Collection (here ArrayList)
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The first one is useful when you need the index of the element as well. This is basically equiva...