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How can I calculate the difference between two dates?
... have 86400 seconds. For a trivial example that's fine but it's not a good idea in the real world. DST changes, leap seconds, etc can all mess with it. NSCalendar can tell you how many seconds are in a given day.
– NeilInglis
Jun 7 '12 at 21:19
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Case insensitive 'Contains(string)'
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Good Idea, also we have a lot of bitwise combinations in RegexOptions like RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace & RegexOptions.CultureInvariant; for anyone if helps.
– Sarava...
How can I get the current PowerShell executing file?
... (not just the last occurrence) and I also tested it. However, it's a nice idea to do something like subtraction on strings.
– fridojet
Jun 7 '12 at 18:19
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Get escaped URL parameter
...y write his own URI parser for this specific use case, which is a terrible idea. Parsing URI's is more complicated that people think.
– Lucas
Jun 1 '12 at 17:35
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Should I add the Visual Studio .suo and .user files to source control?
...d why having the *.suo and *.user files under source control is not a good idea.
I'd like to suggest that you add these patterns to the svn:ignore property for 2 reasons:
So other developers won't wind up
with one developer's settings.
So when you view status, or commit
files, those files won't c...
What is aspect-oriented programming?
...g, which is something more and more realistic. It connects to many popular ideas and gives you something really cool.
Look at an up and coming implementation here: qi4j.org/
PS. Actually, I think that one of the beauties with AOP is also its achilles heel: Its non-intrusive, letting people ignore ...
Javascript: negative lookbehind equivalent?
...port for negative look-behind:
((?!unsigned ).{9}|^.{0,8})int
Basically idea is to grab n preceding characters and exclude match with negative look-ahead, but also match the cases where there's no preceeding n characters. (where n is length of look-behind).
So the regex in question:
(?<!([ab...
When should I use Kruskal as opposed to Prim (and vice versa)?
...re term to use, for example what is the "average size" of a hash table? no idea.
– yairchu
Jul 29 '09 at 11:28
2
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How can I multiply and divide using only bit shifting and adding?
...ook "Hacker's Delight" by Henry S. Warren (ISBN 9780201914658).
The first idea for implementing division is to write the inverse value of the denominator in base two.
E.g.,
1/3 = (base-2) 0.0101 0101 0101 0101 0101 0101 0101 0101 .....
So,
a/3 = (a >> 2) + (a >> 4) + (a >> 6) +...
How to overwrite the previous print to stdout in python?
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Also good idea to fill rest of the string with spaces like stringvar.ljust(10,' ') in case of strings with variable length.
– Annarfych
Jan 31 '19 at 19:11
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