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Algorithm for creating a school timetable
...ble. 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 other at the input and that timetable should fit between 8AM and 4P...
SQL selecting rows by most recent date
Using the following query and results, I'm looking for the most recent entry where the ChargeId and ChargeType are unique.
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HTML - how can I show tooltip ONLY when ellipsis is activated
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Here's a way that does it using the built-in ellipsis setting, and adds the title attribute on-demand (with jQuery) building on Martin Smith's comment:
$('.mightOverflow').bind('mouseenter', function(){
var $this = $(this);
if(this.offsetWidth < this.scrollWidth && !...
Elegant way to combine multiple collections of elements?
...ch containing objects of the same type (for example, List<int> foo and List<int> bar ). If these collections were themselves in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
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How to convert SecureString to System.String?
...you can access the raw data using Marshal.ReadInt16(IntPtr, Int32):
void HandleSecureString(SecureString value) {
IntPtr valuePtr = IntPtr.Zero;
try {
valuePtr = Marshal.SecureStringToGlobalAllocUnicode(value);
for (int i=0; i < value.Length; i++) {
short unicodeChar = Marshal....
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
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Are you using OS X and Homebrew? The Homebrew python page https://github.com/Homebrew/brew/blob/master/docs/Homebrew-and-Python.md calls out a known issue with pip and a work around.
Worked for me.
You can make this "empty prefix" the def...
Find index of last occurrence of a sub-string using T-SQL
...H-DATALENGTH)
This really is something that SQL Server 2000 simply can't handle.
Edit for other answers : REVERSE is not on the list of functions that can be used with text data in SQL Server 2000
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Stop Excel from automatically converting certain text values to dates
...Excel 2007 bug noted by Jeffiekins one should use the solution proposed by Andrew: "=""2008-10-03"""
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What is a CSRF token ? What is its importance and how does it work?
I am writing an application (Django, it so happens) and I just want an idea of what actually a "CSRF token" is and how it protects the data. Is the post data not safe if you do not use CSRF tokens?
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maximum value of int
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in C99 you can also use UINT64_MAX and INT64_MAX
– Dmitry Vyal
Oct 2 '13 at 9:08
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