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Python division
... becoming a floating point number.
>>> 1 / 2
0
You should make one of them a float:
>>> float(10 - 20) / (100 - 10)
-0.1111111111111111
or from __future__ import division, which the forces / to adopt Python 3.x's behavior that always returns a float.
>>> from __futu...
What does O(log n) mean exactly?
... that:
the choice of the next element on which to perform some action is one of several possibilities, and
only one will need to be chosen.
or
the elements on which the action is performed are digits of n
This is why, for example, looking up people in a phone book is O(log n). You don't need...
Why does AuthorizeAttribute redirect to the login page for authentication and authorization failures
... then the compiler will automatically pick it up instead of MVC's standard one. Of course, you could always give the attribute a new name if you'd rather take that approach.
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = true)]
public class Autho...
What regular expression will match valid international phone numbers?
I need to determine whether a phone number is valid before attempting to dial it. The phone call can go anywhere in the world.
...
Finding the number of days between two dates
...his code might be sufficient for practical purposes but it's not exact in sone extremely rare edge cases.
– Benjamin Brizzi
Aug 1 '12 at 8:15
49
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When to use “ON UPDATE CASCADE”
...pplicable if we're assuming that the parent key is not updateable? Here is one case.
I am dealing with a replication scenario in which multiple satellite databases need to be merged with a master. Each satellite is generating data on the same tables, so merging of the tables to the master leads to ...
Peak-finding algorithm for Python/SciPy
...ms like a common-enough function to be included in standard libraries. Anyone know of one?
8 Answers
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How do I perform a Perl substitution on a string while keeping the original?
...
The one-liner solution is more useful as a shibboleth than good code; good Perl coders will know it and understand it, but it's much less transparent and readable than the two-line copy-and-modify couplet you're starting with.
I...
How to specify more spaces for the delimiter using cut?
... way, is a neat way to only get the jboss processes and not the grep jboss one (ditto for the awk variant as well).
The grep process will have a literal grep [j]boss in its process command so will not be caught by the grep itself, which is looking for the character class [j] followed by boss.
This...
How can I tell where mongoDB is storing data? (its not in the default /data/db!)
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Well this one SHOULD print the current path precisely for all mongodb version stackoverflow.com/a/52036070/248616
– Nam G VU
Jun 2 '19 at 10:51
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