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Is there any difference between “foo is None” and “foo == None”?

... And you may want to add that the is operator cannot be customized (overloaded by a user-defined class). – martineau Dec 17 '10 at 20:28 ...
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MongoDB, remove object from array

... yup, my syntax was wrong. Thanks! Also tried without the upset and multi options and that worked as well. – lostintranslation Mar 26 '13 at 20:25 12 ...
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Square retrofit server mock for testing

...Requests for Testing As the old mechanisms like creating MockClient class and implementing it from Client are not working anymore with Retrofit 2.0, here I describe a new way of doing that. All what you need to do now is to add your custom interceptors for OkHttpClient like it is shown below. FakeI...
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How to get the unique ID of an object which overrides hashCode()?

...iginal memory address for this object, but that's an implementation detail and you shouldn't rely on it. EDIT: Answer modified following Tom's comment below re. memory addresses and moving objects. share | ...
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Find object in list that has attribute equal to some value (that meets any condition)

... None) This gets the first item from the list that matches the condition, and returns None if no item matches. It's my preferred single-expression form. However, for x in test_list: if x.value == value: print("i found it!") break The naive loop-break version, is perfectly Pytho...
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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update

as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback. ...
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SQL Add foreign key to existing column

If I am using the following SQL command in SQL Server 2008 to update a table with a foreign key constraint: 6 Answers ...
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How to delete object from array inside foreach loop?

I iterate through an array of objects and want to delete one of the objects based on it's 'id' property, but my code doesn't work. ...
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How do you obtain a Drawable object from a resource id in android package?

...way to use the code below (or something like it) to get an object from the android.R.drawable.* package? 6 Answers ...
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How do I show multiple recaptchas on a single page?

... A similar question was asked about doing this on an ASP page (link) and the consensus over there was that it was not possible to do with recaptcha. It seems that multiple forms on a single page must share the captcha, unless you're willing to use a different captcha. If you are not locked int...