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Getting the count of unique values in a column in bash
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153
To see a frequency count for column two (for example):
awk -F '\t' '{print $2}' * | sort | uniq...
How to initialize a two-dimensional array in Python?
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383
A pattern that often came up in Python was
bar = []
for item in some_iterable:
bar.append...
Java: How to convert List to Map
...t.size());
– Víctor Romero
Jun 5 '13 at 12:18
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show 5 mo...
How to mock an import
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138
You can assign to sys.modules['B'] before importing A to get what you want:
test.py:
import s...
iPhone: How to get current milliseconds?
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273
[[NSDate date] timeIntervalSince1970];
It returns the number of seconds since epoch as a doubl...
How do I change the value of a global variable inside of a function
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answered Jun 3 '12 at 22:41
SpudleySpudley
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How to grep a text file which contains some binary data?
...ile through cat -v, e.g
$ cat -v tmp/test.log | grep re
line1 re ^@^M
line3 re^M
which could be then further post-processed to remove the junk; this is most analogous to your query about using tr for the task.
share
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Invalid syntax when using “print”? [duplicate]
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232
That is because in Python 3, they have replaced the print statement with the print function.
T...
How to split (chunk) a Ruby array into parts of X elements? [duplicate]
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341
Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "...