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Is there any difference between “foo is None” and “foo == None”?
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You may want to read this object identity and equivalence.
The statement 'is' is used for object identity, it checks if objects refer to the same instance (same address in memory).
And the '==' statement refers to equality (same value).
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What is an optional value in Swift?
...ional<String>.
Everything Swift does with optionals is magic to make reading and writing code more fluent. Unfortunately this obscures the way it actually works. I'll go through some of the tricks later.
Note: I'll be talking about optional variables a lot, but it's fine to create optional con...
What is the difference between pull and clone in git?
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Miss Clone: I get a fresh copy to local.
Mr Pull: I already have it locally, I just updates it.
Miss Clone: I can do what you do! You are just my subset.
Mr Pull: Ditto!
Miss Clone: No, you don't create. This is what I do:
Create empty bare repository
Populate remote-...
How to remove .html from URL?
...sumed the OP was saving his pages without the .html extension (which, as I read it, wasn't the case.)
– Kal
Sep 8 at 8:19
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jQuery get selected option value (not the text, but the attribute 'value')
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From what I've read using an ID as a selector is the fastest method.
– Marcus
Oct 26 '12 at 15:35
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Count character occurrences in a string in C++
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Surely we can come up with a totally unreadable templated version with lamba functions and a bind2nd() call ?
– Martin Beckett
Oct 5 '10 at 21:33
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What is a database transaction?
...unit can not be divided further.
The main operation of a transaction are read and write.
All transaction must contain four properties that commonly known as ACID properties for the purpose of ensuring accuracy , completeness and data integrity.
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How to convert NSDate into unix timestamp iphone sdk?
How to convert an NSDate into Unix timestamp? I've read many posts which do the reverse. But I'm not finding anything related to my question.
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How to make tinymce paste in plain text by default
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EDIT: this solution is for version 3.x, for 4.x version read the answer from @Paulo Neves
The problem is that Paste plugin automatically resets plain text paste on every paste. So all we need to do - set it back. The following code should help.
tinyMCE.init({
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oninit : "setPl...
What's the most appropriate HTTP status code for an “item not found” error page
... with id=1 and it no longer exists when you try to update it, some other thread or process ignored your lock (or you didn't set one) and deleted it. That's not good. Alternatively, if you're trying to update object id=n (where n is provided to you) without first checking it exists, you're missing a ...