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Algorithm for creating a school timetable
...ere are known solutions for algorithm of creating a school timetable. Basically, it's about optimizing "hour-dispersion" (both in teachers and classes case) for given class-subject-teacher associations. We can assume that we have sets of classes, lesson subjects and teachers associated with each ot...
How to change the name of a Django app?
...e changed the name of an app in Django by renaming its folder, imports and all its references (templates/indexes). But now I get this error when I try to run python manage.py runserver
...
The Following Module was built either with optimizations enabled or without debug information
...ode on the non-web project in question and it's in Active(Debug). Deleted all items in my .NET 2.0 temp folder in Windows. Not sure what else to do here.
...
What is the difference between a pseudo-class and a pseudo-element in CSS?
...nsists of a "colon" (:) followed by the name of the pseudo-class and optionally by a value between parentheses.
Pseudo-classes are allowed in all sequences of simple selectors contained in a selector. Pseudo-classes are allowed anywhere in sequences of simple selectors, after the leading type s...
SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
...s with the time zone setting. Specify in other formats like mm/dd/yyyy (usually works).
Specifying the date as 30/12/2013 resulted in the error for me. However, specifying it as mm/dd/yyyy format worked.
If you need to convert your input the you can try looking into the CONVERT method.
Syntax i...
Counting the number of elements with the values of x in a vector
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Don't forget about potential floating point issues, especially with table, which coerces numbers to strings.
– hadley
Dec 17 '09 at 18:10
4
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Mongoose subdocuments vs nested schema
...still have the same subdocument structure.
– Martin Hallén
Jul 9 '14 at 9:17
2
you should also c...
Cannot set some HTTP headers when using System.Net.WebRequest
...ht to the last section of the answer.
If you want to know better, read it all, and i hope you'll enjoy...
I countered this problem too today, and what i discovered today is that:
the above answers are true, as:
1.1 it's telling you that the header you are trying to add already exist and you s...
GetHashCode Guidelines in C#
...ot GetHashCode right at every implementation. Second, value types are generally immutable with every value being a new instance rather than a modification of an existing instance.
– Jeff Yates
Jan 20 '09 at 18:46
...
What is your preferred style for naming variables in R? [closed]
...
Good previous answers so just a little to add here:
underscores are really annoying for ESS users; given that ESS is pretty widely used you won't see many underscores in code authored by ESS users (and that set includes a bunch of R Core as well as CRAN authors, excptions like Hadley notwithsta...