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Obtaining a powerset of a set in Java
...tains() would be O(n), etc.
Do you really need this?
EDIT:
This code is now available in Guava, exposed through the method Sets.powerSet(set).
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ViewController respondsToSelector: message sent to deallocated instance (CRASH)
...o show object that was called after it was deallocated.
You should see now every call that has changed retain count of this object. This could be because sending directly retain/release messages as well as draining autorelease pools or inserting into NSArrays.
RefCt column shows retainCount aft...
What is the difference between
... i have met somewhere in code this variant else <%== %> does anyone know what is it?
– okliv
Jul 11 '12 at 17:03
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How to remove the lines which appear on file B from another file A?
...e a set, where there won't be any duplicate values (keys)
!($0 in a) we're now in the next file(s), in is a contains test, here it's checking whether current line is in the set we populated in the first step from the first file, ! negates the condition. What is missing here is the action, which by...
Is there a decorator to simply cache function return values?
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the backport can now be found here: pypi.python.org/pypi/backports.functools_lru_cache
– Frederick Nord
Jul 21 '15 at 7:55
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git: abort commit in the middle of typing message
...m in the middle of committing. I have typed up my commit message in vim. I now remembered I needed to change something. I realize that there are other options to accomplish what I want, but I want to know if there is a way to abort the commit but still save the commit message I've typed up so far.
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What is pseudopolynomial time? How does it differ from polynomial time?
...then it will take some worst-case amount of time, say T, to complete. If I now add a single bit to the end of the number, like this:
100010101010111
The runtime will now (in the worst case) be 2T. I can double the amount of work the algorithm does just by adding one more bit!
An algorithm run...
How to have conditional elements and keep DRY with Facebook React's JSX?
...ple of when a developer (me) tries to transfer patterns and approaches he knows from one area to another but it doesn't really work (in this case other template languages).
If you need a conditional element, do it like this:
render: function () {
return (
<div id="page">
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Force IE compatibility mode off using tags
...sion), it's safe to use this; otherwise, you may want to stick to IE=9 for now.
– calvinf
Aug 7 '12 at 1:00
75
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The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value
...it.story;
story.image = ArticleToEdit.image;
story.modifiedDate = DateTime.Now;
_db.SubmitChanges();
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