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What are the differences between numpy arrays and matrices? Which one should I use?
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edited May 7 at 14:10
hashlash
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answered Apr 11 at 11:52
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Oracle “Partition By” Keyword
... 10 3 <- three because there are three "dept_no = 10" records
4 20 2
5 20 2 <- two because there are two "dept_no = 20" records
If there was another column (e.g., state) then you could count how many departments in that State.
It is like getting the results...
Favorite Visual Studio keyboard shortcuts [closed]
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124 Answers
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Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
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<div class="col-xs-6">Column 2</div>
<div class="col-xs-4">Column 3</div>
You'll notice the # of columns always add up to 12. It can be less than twelve, but beware if more than 12, as your offending divs will bump down to the next row (not .row, which is another story ...
Add string in a certain position in Python
...thon Strings are immutable.
>>> s='355879ACB6'
>>> s[4:4] = '-'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'str' object does not support item assignment
It is, however, possible to create a new string that has the inserted ...
In Rails - is there a rails method to convert newlines to ?
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edited Jul 14 '16 at 5:02
linesarefuzzy
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answered...
Remove all files except some from a directory
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edited Sep 12 '17 at 13:47
answered Dec 1 '10 at 14:28
aw...
How to get Maven project version to the bash command line
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Pascal ThiventPascal Thivent
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Remove an item from a dictionary when its key is unknown
...nt:
>>> some_dict = {1: "Hello", 2: "Goodbye", 3: "You say yes", 4: "I say no"}
>>> value_to_remove = "You say yes"
>>> some_dict = {key: value for key, value in some_dict.items() if value is not value_to_remove}
>>> some_dict
{1: 'Hello', 2: 'Goodbye', 3: 'You s...
How can I select random files from a directory in bash?
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Here's a script that uses GNU sort's random option:
ls |sort -R |tail -$N |while read file; do
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