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Remove blank attributes from an Object in Javascript
... delete obj[propName];
}
}
}
clean(test);
If you're concerned about this property removal not running up object's proptype chain, you can also:
function clean(obj) {
var propNames = Object.getOwnPropertyNames(obj);
for (var i = 0; i < propNames.length; i++) {
var propName = pr...
Painless way to install a new version of R?
... will load automatically every time R loads, and you don't have to worry about that any more. You can just install and load packages from the specified directory.
Finally, I have some small code included in my Rprofile.site allowing me to reinstall all packages when I install a new R version. You j...
Why are variables “i” and “j” used for counters?
... told to draw our "i" exactly like a backwards "j" to be perfectly clear about it.
– S.Lott
Nov 9 '10 at 20:38
26
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Getting the first character of a string with $str[0]
... for accurate measurements, you should imho better do microtime out of the loop, and don't mix the different approaches within the same loop.
– PypeBros
Aug 4 '16 at 9:35
...
What is the Ruby (spaceship) operator?
...s used mainly to simplify the "sort BLOCK LIST" syntax. The BLOCK is a subroutine that can return any positive number, negative number, or 0 depending on how the list items should be sorted. Spaceship operator is convenient to use in the block.
– TonyArra
Dec 3...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...
Your NSSet approach is the best if you're not worried about the order of the objects, but then again, if you're not worried about the order, then why aren't you storing them in an NSSet to begin with?
I wrote the answer below in 2009; in 2011, Apple added NSOrderedSet to iOS 5 an...
Scala downwards or decreasing for loop?
...
@Felix: You're welcome. I should have also pointed out that there is also until that you can use in place of to to exclude the right-hand end-point from the range. The left-hand endpoint is always included.
– Randall Schulz
Apr 13 '10 at...
Setting focus on an HTML input box on page load
...e page loads (example: google).
My page is very simple, yet I can't figure out how to do this.
4 Answers
...
Can I change all my http:// links to just //?
...ix browser called Dillo.
There are two drawbacks I've received feedback about:
Protocol-less URLs may not work as expected when you "open" a local file in your browser, because the page's base protocol will be file:///. Especially when you're using the protocol-less URL for an external resource ...
What's the difference between session.Merge and session.SaveOrUpdate?
...
Are you sure about this? Looking at the NHiberante source SaveOrUpdateCopy triggers a Merge event with the same parameters as the Merge function. I think the they are identical, the SaveOrUpdateCopy function is something that has existed in...