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Why are Objective-C delegates usually given the property assign instead of retain?
...oth are the same in a garbage collected environment. I'm mostly concerned with a non-GC based environment (eg: iPhone).
4 A...
What is Serialization?
I am getting started with Object-Oriented Programming (OOP) and would like to know: what is the meaning of serialization in OOP parlance?
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Python Create unix timestamp five minutes in the future
...to create an "Expires" value 5 minutes in the future, but I have to supply it in UNIX Timestamp format. I have this so far, but it seems like a hack.
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Why there is no ForEach extension method on IEnumerable?
...s the job most of the time.
I'd hate to see the following:
list.ForEach( item =>
{
item.DoSomething();
} );
Instead of:
foreach(Item item in list)
{
item.DoSomething();
}
The latter is clearer and easier to read in most situation, although maybe a bit longer to type.
However, I ...
How do I add a class to a given element?
..."div1");
d.className += " otherclass";
Note the space before otherclass. It's important to include the space otherwise it compromises existing classes that come before it in the class list.
See also element.className on MDN.
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Difference between outline and border
...e CSS outline property is a confusing property. When you first learn about it, it's hard to understand how it is even remotely different from the border property. The W3C explains it as having the following differences:
1.Outlines do not take up space.
2.Outlines may be non-rectangular.
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Insert a commit before the root commit in Git?
I've asked before about how to squash the first two commits in a git repository.
15 Answers
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How to delete items from a dictionary while iterating over it?
Is it legitimate to delete items from a dictionary in Python while iterating over it?
10 Answers
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Regex lookahead, lookbehind and atomic groups
...obarbarfoo:
bar(?=bar) finds the 1st bar ("bar" which has "bar" after it)
bar(?!bar) finds the 2nd bar ("bar" which does not have "bar" after it)
(?<=foo)bar finds the 1st bar ("bar" which has "foo" before it)
(?<!foo)bar finds the 2nd bar ("bar" which does not have "foo" before...
Why doesn't JavaScript support multithreading?
Is it a deliberate design decision or a problem with our current day browsers which will be rectified in the coming versions?
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