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How to show line number when executing bash script
I have a test script which has a lot of commands and will generate lots of output, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a m...
SortedList, SortedDictionary and Dictionary
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To summarize the results of a Performance Test - SortedList vs. SortedDictionary vs. Dictionary vs. Hashtable, the results from best to worst for different scenarios:
Memory Usage:
SortedList<T,T>
Hashtable
SortedDictionary<T,T>
Dictionary<T,T>
...
Hashing a dictionary?
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I tested the performance of this with different dataset, it's much much faster than make_hash. gist.github.com/charlax/b8731de51d2ea86c6eb9
– charlax
Sep 18 '14 at 22:33
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MIN/MAX vs ORDER BY and LIMIT
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In a test with an indexed table with 470 million rows, both queries take 0.00 s. However, if we add to the queries a filter "WHERE field2=x", the query with LIMIT still takes 0.00 s and the query with MIN takes 0.21 s.
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How do I allow HTTPS for Apache on localhost?
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I've just attempted this - I needed to test some development code on my localhost Apache on Windows. This was WAAAY more difficult than it should be. But here are the steps that managed to work after much hairpulling...
I found that my Apache install comes with...
CSS3 transform not working
...e elements.. Set display: inline-block; to make it work. For demonstration/testing purposes, you may also want to use a negative angle or a transformation-origin lest the text is rotated out of the visible area.
share
...
Why doesn't django's model.save() call full_clean()?
...nforced both from forms and from other calling code, the command line, and tests. Without this, there is (AFAICT) no way to write a test that ensures that a model has a FK relation to a specifically chosen (not default) other model.
class Payer(models.Model):
name = models.CharField(blank=True...
Java packages com and org
...your class>
example1: (here domain:-
"stackoverflow.com", project:- "Test")
com.stackoverfllow.test.handler.TestHandler
example2: (here domain:- "www.google.co.in", project:- "My Proj")
in.co.google.myproj.controller.MainController
but for reserved domains like java.*, javax.*, sun.*,...
Lodash - difference between .extend() / .assign() and .merge()
...t level
Only _.assign and _.extend will overwrite a value with undefined
Tests
They all handle members at the root in similar ways.
_.assign ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.merge ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.defaults ({}, { a: 'a' }, { a...
A regex to match a substring that isn't followed by a certain other substring
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Try:
/(?!.*bar)(?=.*foo)^(\w+)$/
Tests:
blahfooblah # pass
blahfooblahbarfail # fail
somethingfoo # pass
shouldbarfooshouldfail # fail
barfoofail # fail
Regular expression explanation
NODE EXPLANAT...