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How do I remove duplicate items from an array in Perl?
...q4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three
If you want to use a module, try the uniq function from List::MoreUtils
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Convert seconds to HH-MM-SS with JavaScript?
... better as pointed out by T.J. Crowder.
--update 2
Please use @Frank's a one line solution:
new Date(SECONDS * 1000).toISOString().substr(11, 8)
It is by far the best solution.
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Using Gradle to build a jar with dependencies
I have a multiproject build and I put a task to build a fat jar in one of the subprojects. I created the task similar to the one described in the cookbook .
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Various ways to remove local Git changes
I just cloned a git repository and checked out a branch. I worked on it, and then decided to remove all my local changes, as I wanted the original copy.
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How do you check if a variable is an array in JavaScript? [duplicate]
...ys of checking if an variable is an array or not. The best solution is the one you have chosen.
variable.constructor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript en...
How to remove an item for a OR'd enum?
... (&) with some value (let's call that value 'X') and the complement of one or more set bits (let's call those bits Q and their complement ~Q), the statement X & ~Q clears any bits that were set in Q from X and returns the result.
So to remove or clear the BLUE bits, you use the following st...
How to search and replace globally, starting from the cursor position and wrapping around the end of
...t, the substitution command is run for each line starting from
the current one until the end of file:
,$s/BEFORE/AFTER/gc
Then, that :substitute command is repeated with the same search
pattern, replacement string, and flags, using the :& command
(see :help :&):
1,''-&&
The latter...
Copying a HashMap in Java
...
If you want a copy of the HashMap you need to construct a new one with.
myobjectListB = new HashMap<Integer,myObject>(myobjectListA);
This will create a (shallow) copy of the map.
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return, return None, and no return at all?
...
On the actual behavior, there is no difference. They all return None and that's it. However, there is a time and place for all of these.
The following instructions are basically how the different methods should be used (or at least how I was taught they should be used), but they are not a...
Google Chrome form autofill and its yellow background
...me remembers some login/password it changes a background color to a yellow one.
28 Answers
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