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Haskell: Lists, Arrays, Vectors, Sequences
... standard library, and for that matter the prelude, is full of useful list functions that should litter your code (foldr,map,filter). Lists are persistant , aka purely functional, which is very nice. Haskell lists aren't really "lists" because they are coinductive (other languages call these strea...
What is PECS (Producer Extends Consumer Super)?
...ause it's a sketch for Scala, it uses Scala syntax and assumes declaration-site variance, which is quite different to Java's weird call-site variance... Maybe I should write a more detailed answer that clearly shows how this sketch applies to Java...
– Andrey Tyukin
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...the privileges you already granted, e.g. run mysql -u root -p -h 192.168.1.123 or whichever local IP address your box have.
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Templated check for the existence of a class member function?
...to write a template that changes behavior depending on if a certain member function is defined on a class?
29 Answers
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How to check if a String contains another String in a case insensitive manner in Java?
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123
A Faster Implementation: Utilizing String.regionMatches()
Using regexp can be relatively slow...
Pointer expressions: *ptr++, *++ptr and ++*ptr
...hen increments dereferenced value
And here's a fourth, every bit as much fun as the other three:
(*ptr)++ // effectively forces a dereference, then increments dereferenced value
The first and second will crash if ptr is actually an array identifier. The third and fourth will crash if ptr points...
Get current batchfile directory
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123
Very simple:
setlocal
cd /d %~dp0
File.exe
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Where do I find the current C or C++ standard documents?
...king drafts for future standards are often available from the committee websites:
C++ committee website
C committee website
If you want to get drafts from the current or earlier C/C++ standards, there are some available for free on the internet:
For C:
ANSI X3.159-198 (C89):
I cannot find a ...
How to trace the path in a Breadth-First Search?
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I thought I'd try code this up for fun:
graph = {
'1': ['2', '3', '4'],
'2': ['5', '6'],
'5': ['9', '10'],
'4': ['7', '8'],
'7': ['11', '12']
}
def bfs(graph, forefront, end):
# assumes no cycles
next_...
Request is not available in this context
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Thanks, this got my site up and running again after it suddenly came down with this symptom. Strangely enough, I had not changed from classic ASP.NET in the app pool -- I still got the error. Adding a variant of this code (using Interlocked.Exch...