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Passing arguments with spaces between (bash) script
I've got the following bash two scripts
1 Answer
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Join an Array in Objective-C
I'm looking for a method of turning a NSMutableArray into a string. Is there anything on a par with this Ruby array method?
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how to concatenate two dictionaries to create a new one in Python? [duplicate]
...13:22}' \
'd4 = dict(d1.items() + d2.items() + d3.items())'
100000 loops, best of 3: 4.93 usec per loop
Fastest: exploit the dict constructor to the hilt, then one update:
$ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \
'd4 = dict(d1, **d2); d4.update(d3)'
1000000 loops, best...
Python os.path.join on Windows
...m making a program that will output a script. I want to use os.path.join, but am pretty confused. According to the docs if I say:
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Include jQuery in the JavaScript Console
...hrome JavaScript console for sites that do not use it? For example, on a website I would like to get the number of rows in a table. I know this is really easy with jQuery.
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Why do we need break after case statements?
Why doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute?
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Calculating Pearson correlation and significance in Python
...n.
The Pearson correlation coefficient measures the linear relationship
between two datasets. Strictly speaking, Pearson's correlation requires
that each dataset be normally distributed. Like other correlation
coefficients, this one varies between -1 and +1 with 0 implying no
correlation. Corr...
MySQL select 10 random rows from 600K rows fast
How can I best write a query that selects 10 rows randomly from a total of 600k?
26 Answers
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Unix command to find lines common in two files
... edited Jun 27 '17 at 9:58
Habeeb Perwad
6,1451212 gold badges7070 silver badges117117 bronze badges
answered Dec 17 '08 at 6:40
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What are the use cases for selecting CHAR over VARCHAR in SQL?
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The general rule is to pick CHAR if all rows will have close to the same length. Pick VARCHAR (or NVARCHAR) when the length varies significantly. CHAR may also be a bit faster because all the rows are of the same length.
It var...