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What method in the String class returns only the first N characters?
... that the LINQ version returns a IEnumerable<char>, so you'd have to convert the IEnumerable<char> to string: new string(s.Take(n).ToArray()).
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Remove duplicates from a List in C#
... virtual mode. It was super-fast to make a HashSet<> first and then convert it into a List<> (so ListView can access items by index). List<>.Contains() is too slow.
– Sinatr
Jul 31 '13 at 8:50
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Python try…except comma vs 'as' in except
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If you want to support all python versions you can use the sys.exc_info() function like this:
try:
a = 1/'0'
except (ZeroDivisionError, TypeError):
e = sys.exc_info()[1]
print(e.args[0])
(source:http://python3porting.com/noconv.html)
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Regarding 'main(int argc, char *argv[])' [duplicate]
...] = 1
argv[ 5 ] = 4
argv[ 6 ] = 5
[The char strings "2", "8" etc. can be converted to number using some character to number conversion function, e.g. atol() (link)]
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What is “vectorization”?
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Vectorization is the term for converting a scalar program to a vector program. Vectorized programs can run multiple operations from a single instruction, whereas scalar can only operate on pairs of operands at once.
From wikipedia:
Scalar approach:
for...
How do I use a Boolean in Python?
...cs.python.org/library/functions.html#bool
Your code works too, since 1 is converted to True when necessary.
Actually Python didn't have a boolean type for a long time (as in old C), and some programmers still use integers instead of booleans.
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How to get terminal's Character Encoding
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This is what worked for me on a CentOS system. It showed the system encoding based upon current language settings. The terminal settings used to get to that machine are a different story and a function of the client being used.
– Phil DD
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How do I specify the exit code of a console application in .NET?
... You say that 0 is the standard value for success, and yet when converting 0/1 to boolean, 0 is false and 1 is true! It may be more accurate to say that an exit code of 0 means "no error", rather than "success", as the exit code is an ErrorResult not simply a Result.
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Seeking clarification on apparent contradictions regarding weakly typed languages
...ping I end up finding examples of programming languages that simply coerce/convert types automatically.
9 Answers
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Storing money in a decimal column - what precision and scale?
...mplemented a system that needs to handle values in multiple currencies and convert between them, and figured out a few things the hard way.
NEVER USE FLOATING POINT NUMBERS FOR MONEY
Floating point arithmetic introduces inaccuracies that may not be noticed until they've screwed something up. All v...