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Submitting a form by pressing enter without a submit button
...on't want to get into JavaScript if possible since I want everything to work on all browsers (the only JS way I know is with events).
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How to find the sum of an array of numbers
...son I have included this is as an answer Ortund's question as I do not think it was clarified.
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Change multiple files
...r yet:
for i in xa*; do
sed -i 's/asd/dfg/g' $i
done
because nobody knows how many files are there, and it's easy to break command line limits.
Here's what happens when there are too many files:
# grep -c aaa *
-bash: /bin/grep: Argument list too long
# for i in *; do grep -c aaa $i; done
0...
How do I move to end of line in Vim?
I know how to generally move around in command mode, specifically, jumping to lines, etc. But what is the command to jump to the end of the line that I am currently on?
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How does delete[] “know” the size of the operand array?
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When you allocate memory on the heap, your allocator will keep track of how much memory you have allocated. This is usually stored in a "head" segment just before the memory that you get allocated. That way when it's time to free the memory, the de-allocator knows exactly how much m...
Reusable library to get human readable version of file size?
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Addressing the above "too small a task to require a library" issue by a straightforward implementation:
def sizeof_fmt(num, suffix='B'):
for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
if abs(num) < 1024.0:
return "%3.1f%s%s" % (...
Iterating through a list in reverse order in java
I'm migrating a piece of code to make use of generics. One argument for doing so is that the for loop is much cleaner than keeping track of indexes, or using an explicit iterator.
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How to convert linq results to HashSet or HashedSet
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I don't think there's anything built in which does this... but it's really easy to write an extension method:
public static class Extensions
{
public static HashSet<T> ToHashSet<T>(
this IEnumerable<T> sour...
Optimising Android application before release [closed]
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At some point you are going to get to the point where using known tricks will hit their limits. The best thing to do at this point is profile your code and see what areas are the bottle-necks based on your specific requirements.
Investigating RAM usage using MAT and Using Traceview: ...
Good examples of Not a Functor/Functor/Applicative/Monad?
...tructor which is not a Functor:
newtype T a = T (a -> Int)
You can make a contravariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed:
fmap :: Functor f => (a -> b) -> f a ->...