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Validating IPv4 addresses with regexp
....1.255.1
127.1
192.168.1.256
-1.2.3.4
1.1.1.1.
3...3
Try online with unit tests: https://www.debuggex.com/r/-EDZOqxTxhiTncN6/1
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StringIO in Python3
...ule StringIO is gone and from io import BytesIO should be applied instead. Tested myself on python 3.5 @ eclipse pyDev + win7 x64. Please let me know if I were wrong thanks.
– Bill Huang
Mar 5 '16 at 17:16
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Scanner vs. StringTokenizer vs. String.Split
... Would also be interesting to see Scanner's results on the same tests you ran on String.Split and StringTokenizer.
– Dave
Mar 27 '09 at 20:09
2
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In Python, what is the difference between “.append()” and “+= []”?
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The performance tests here are not correct:
You shouldn't run the profile only once.
If comparing append vs. += [] number of times you should declare append as a local function.
time results are different on different python versions: 64 a...
Remove redundant paths from $PATH variable
... I make no guarantees about compatibility with all other shells. I suggest testing it out on whatever shell you're using, and if it doesn't work for your shell, you can use Python if you have it installed - I added some Python to the answer to describe how.
– Aaron Hall♦
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How do you produce a .d.ts “typings” definition file from an existing JavaScript library?
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--allowJs with --declaration options can't be combined (tested in TypeScript 1.8 and 2.0). If I try, I get: error TS5053: Option 'allowJs' cannot be specified with option 'declaration'
– Alexey
Sep 27 '16 at 7:52
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How to check if a string contains an element from a list in Python
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extensionsToCheck = ('.pdf', '.doc', '.xls')
'test.doc'.endswith(extensionsToCheck) # returns True
'test.jpg'.endswith(extensionsToCheck) # returns False
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Is there a way to style a TextView to uppercase all of its letters?
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I have just tested this and it is working. I have an external style file
– 7heViking
Jul 23 '12 at 11:31
1
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psql: FATAL: Peer authentication failed for user “dev”
... to create the UNIX user dev and then login as dev or use sudo -u dev psql test_development for accessing the database (and psql should not ask for a password).
If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a sock...
Python try-else
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One use: test some code that should raise an exception.
try:
this_should_raise_TypeError()
except TypeError:
pass
except:
assert False, "Raised the wrong exception type"
else:
assert False, "Didn't raise any exception...