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What is the EAFP principle in Python?
... those, if the handler is just assigning a default value to x when the key doesn't exist: x = mydict.get('key') will return None if 'key' is not in my_dict; you could also do .get('key', <something>), and then x will be assigned that something if the key isn't in the dictionary. dict.setdefaul...
Why isn't String.Empty a constant?
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The reason that static readonly is used instead of const is due to use with unmanaged code, as indicated by Microsoft here in the Shared Source Common Language Infrastructure 2.0 Release. The file to look at is sscli20\clr\src\bcl\system\string.cs.
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How to prevent form from submitting multiple times from client side?
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Do you even need the return true? I think the initial submit should work without that.
– Simon East
Sep 7 '11 at 2:16
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Is a colon `:` safe for friendly-URL use?
...nd the one your application gives it. The scheme, http, only says that you don't send this part to the server.
EDIT:
D'oh!
Despite my assertions about the URI spec, irreputable provides the correct answer when he points out that the HTML 4 spec restricts element names/identifiers.
Note that id...
How can I convert a comma-separated string to an array?
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The map function can be used to do the integer parsing in one line: str.split(',').map(parseInt)
– Jud
Mar 6 '14 at 21:12
1
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Any way to delete in vim without overwriting your last yank? [duplicate]
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Your yanked line should still be in the register 0. So do
"0p
to paste the line (and delete whenever you want)
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fancybox2 / fancybox causes page to to jump to the top
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This can actually be done with a helper in Fancybox 2.
$('.image').fancybox({
helpers: {
overlay: {
locked: false
}
}
});
http://davekiss.com/prevent-fancybox-from-jumping-to-the-top-of-the-page/
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map vs. hash_map in C++
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I don't fully agree with you regarding the performance. The performance is influenced by a number of parameters and I would scold any programmer using an unordered_map for a mere 10 entries because "It's faster". Worry about in...
What are the git concepts of HEAD, master, origin?
...n. Take time and really read it, while exploring an actual git repo as you do.
HEAD: the current commit your repo is on. Most of the time HEAD points to the latest commit in your current branch, but that doesn't have to be the case. HEAD really just means "what is my repo currently pointing at".
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Hibernate vs JPA vs JDO - pros and cons of each? [closed]
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Some notes:
JDO and JPA are both specifications, not implementations.
The idea is you can swap JPA implementations, if you restrict your code to use standard JPA only. (Ditto for JDO.)
Hibernate can be used as one such implementation of ...