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How to take column-slices of dataframe in pandas
...t may also be used with a boolean array. .loc will raise KeyError when the items are not found. A similar statement is made about .iloc excep it specifically refers to index based slicing. In other words in this example, he used label based indexing and .loc is the correct choice (basically the only...
Does JavaScript have a built in stringbuilder class?
...inning I tested on small number of iterations (some hundred, some thousand items). The results were unpredictable (sometimes string concatenation took 0 milliseconds, sometimes it took 16 milliseconds, the same for array joining).
When I increased the count to 50,000, the results were different in d...
Create a new workspace in Eclipse
I don't see any menu item I can use to create a new workspace.
3 Answers
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Prevent jQuery UI dialog from setting focus to first textbox
...us'):
Upon opening a dialog, focus is automatically moved to the first item
that matches the following:
The first element within the dialog with the autofocus attribute
The first :tabbable element within the dialog's content
The first :tabbable element within the dialog's buttonpan...
Why do browsers match CSS selectors from right to left?
...omething different. In the long run, this is a lot more work than ignoring items in rules that are already taken care of.
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Creating Unicode character from its number
...ing(charPair);
// we now have str with the desired character as the first item
// confirm that we indeed have character with code point 128149
System.out.println("First code point: " + symbol.codePointAt(0));
I also did a quick test as to which conversion methods work and which don't
int codePoi...
HTTP status code for update and delete?
... use 204 or 404 (DELETE operation is idempotent, delete an already deleted item is operation successful, so you can return 204, but it's true that idempotent doesn't necessarily imply the same response)
Other errors:
400 Bad Request (Malformed syntax or a bad query is strange but possible).
401 U...
What is the difference between a heuristic and an algorithm?
...lgorithm does is precisely defined. The solution could or could not be the best possible one but you know from the start what kind of result you will get. You implement the algorithm using some programming language to get (a part of) a program.
Now, some problems are hard and you may not be able to...
Python JSON serialize a Decimal object
...ct=True, tuple_as_array=True,
bigint_as_string=False, sort_keys=False, item_sort_key=None,
for_json=False, ignore_nan=False, **kw):
So:
>>> json.dumps(Decimal('3.9'))
'3.9'
Hopefully, this feature will be included in standard library.
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HTML entity for the middle dot
...the dot that's at the end of sentences but the dot that's used to separate items horizontally.
7 Answers
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