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Fast way of finding lines in one file that are not in another?
I have two large files (sets of filenames). Roughly 30.000 lines in each file. I am trying to find a fast way of finding lines in file1 that are not present in file2.
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What is the difference between a definition and a declaration?
The meaning of both eludes me.
23 Answers
23
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
... "Server is unavailable" errors before, but am now seeing a connection timeout error.
I'm not familiar with this - why does it occur and how can I fix it?
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Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...ng zero as octal. So os.chmod("file",
484) (in decimal) would give the same result.
What you are doing is passing 664 which in octal is 1230
In your case you would need
os.chmod("/tmp/test_file", 436)
[Update] Note, for Python 3 you have prefix with 0o (zero oh). E.G, 0o666
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DialogFragment setCancelable property not working
I am working in an android application and am using a DialogFragment to show a dialog and I want to make that DialogFragment not cancelable. I have made the dialog cancelable property to false, but still its not affecting.
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How do I create a constant in Python?
...ou are in a class, the equivalent would be:
class Foo(object):
CONST_NAME = "Name"
if not, it is just
CONST_NAME = "Name"
But you might want to have a look at the code snippet Constants in Python by Alex Martelli.
As of Python 3.8, there's a typing.Final variable annotation that will tell sta...
How do I edit an existing tag message in git?
...ve several annotated tags in our git repository. The older tags have bogus messages that we would like to update to be in our new style.
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Simple calculations for working with lat/lon and km distance?
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Do you mean cos(longitude) in the second formula?
– Odys
Jul 8 '14 at 11:52
1
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Get value from JToken that may not exist (best practices)
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This is pretty much what the generic method Value() is for. You get exactly the behavior you want if you combine it with nullable value types and the ?? operator:
width = jToken.Value<double?>("width") ?? 100;
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For each row return the column name of the largest value
I have a roster of employees, and I need to know at what department they are in most often. It is trivial to tabulate employee ID against department name, but it is trickier to return the department name, rather than the number of roster counts, from the frequency table. A simple example below (colu...