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In a javascript array, how do I get the last 5 elements, excluding the first element?
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You can call:
arr.slice(Math.max(arr.length - 5, 1))
If you don't want to exclude the first element, use
arr.slice(Math.max(arr.length - 5, 0))
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How can I declare and use Boolean variables in a shell script?
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Revised Answer (Feb 12, 2014)
the_world_is_flat=true
# ...do something interesting...
if [ "$the_world_is_flat" = true ] ; then
echo 'Be careful not to fall off!'
fi
Original Answer
Caveats: https://stackoverflow.com/a/21210966/89391
the_world_is_flat=true
# ...do somethin...
Select elements by attribute
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Do you mean can you select them? If so, then yes:
$(":checkbox[myattr]")
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How do you get a list of the names of all files present in a directory in Node.js?
...ory using Node.js. I want output that is an array of filenames. How can I do this?
25 Answers
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How do I print bold text in Python?
How do I print bold text in Python?
12 Answers
12
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PHP global in functions
...cope to the global scope (statics, singletons, registries, constants). You do not want to use them. A function call should not have to rely on anything outside, e.g.
function fn()
{
global $foo; // never ever use that
$a = SOME_CONSTANT // do not use that
$b = Foo::S...
Understanding checked vs unchecked exceptions in Java
...be used at all. They were eliminated in C# for example, and most languages don't have them. So you can always throw a subclass of RuntimeException (unchecked exception)
However, I think checked exceptions are useful - they are used when you want to force the user of your API to think how to handle ...
How do I disable right click on my web page?
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You can do that with JavaScript by adding an event listener for the "contextmenu" event and calling the preventDefault() method:
document.addEventListener('contextmenu', event => event.preventDefault());
That being said: DON'T ...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
Given this document saved in MongoDB
17 Answers
17
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What is java interface equivalent in Ruby?
Can we expose interfaces in Ruby like we do in java and enforce the Ruby modules or classes to implement the methods defined by interface.
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