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Speed up the loop operation in R
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Ah, I should have thought through it more carefully. Thanks for showing me the mistake.
– Gregor Thomas
May 25 '16 at 23:07
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Associating enums with strings in C#
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I like to use properties in a class instead of methods, since they look more enum-like.
Here's a example for a Logger:
public class LogCategory
{
private LogCategory(string value) { Value = value; }
public string Value { get; set; }
public static LogCategory Trace { get { return...
Split code over multiple lines in an R script
...> setwd(paste("~/a/very/long/path/here",
"/and/then/some/more",
"/and/then/some/more",
"/and/then/some/more", sep=""))
which also illustrates that it is perfectly fine to break code across multiple lines.
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Remove all multiple spaces in Javascript and replace with single space [duplicate]
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Very true :) --inserts more characters--
– Josiah
Jul 20 '10 at 4:02
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Visual Studio support for new C / C++ standards?
...es (variadic macros, long long) but beyond this we are unlikely to do much more in the C-99 space (at least in the short-term).
Jonathan Caves
Visual C++ Compiler Team.
This is a pretty sad state of affairs, but also makes sense if you suspect MS wants to lock users in: it makes it very hard to por...
How to do a simple file search in cmd
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If you are searching recursively and the output is big you can always use more to enable paging, it will show -- More -- at the bottom and will scroll to the next page once you press SPACE or moves line by line on pressing ENTER
where /r c:\Windows *.exe |more
For more help try
where/?
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How to get the first word of a sentence in PHP?
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You can use the explode function as follows:
$myvalue = 'Test me more';
$arr = explode(' ',trim($myvalue));
echo $arr[0]; // will print Test
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Check whether number is even or odd
...aning of premature optimization. If you know beforehand that one method is more performant than another, then it's not premature optimization to use the more performant method. It's intelligent. That said, my comment was more about how checking the first bit is more logical than using modulus when s...
Why would I ever use push_back instead of emplace_back?
...rformance.
The actual difference between these two statements is that the more powerful emplace_back will call any type of constructor out there, whereas the more cautious push_back will call only constructors that are implicit. Implicit constructors are supposed to be safe. If you can implicitly c...
Iterate a list as pair (current, next) in Python
...s way.
And since tee() can take an n parameter, this can also be used for more than two parallel iterators:
def threes(iterator):
"s -> (s0,s1,s2), (s1,s2,s3), (s2, s3,4), ..."
a, b, c = itertools.tee(iterator, 3)
next(b, None)
next(c, None)
next(c, None)
return zip(a, b...