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TypeError: 'NoneType' object is not iterable in Python

...r a variable containing None. The operation was performed by invoking the __iter__ method on the None. None has no __iter__ method defined, so Python's virtual machine tells you what it sees: that NoneType has no __iter__ method. This is why Python's duck-typing ideology is considered bad. The...
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Fit background image to div

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
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How to apply bindValue method in LIMIT clause?

...I think this solves it. $fetchPictures->bindValue(':skip', (int) trim($_GET['skip']), PDO::PARAM_INT); share | improve this answer | follow | ...
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Objective-C Static Class Level variables

...ing a Class Object in Apple's Objective-C docs. – big_m Oct 3 '11 at 16:02 ...
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How do you round to 1 decimal place in Javascript?

...) You might want to create a function for this: function roundedToFixed(_float, _digits){ var rounded = Math.pow(10, _digits); return (Math.round(_float * rounded) / rounded).toFixed(_digits); } share | ...
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How to detect if a function is called as constructor?

... // except in in EcmaScript 5 strict mode. && !this.__previouslyConstructedByX) { isConstructor = true; this.__previouslyConstructedByX = true; } alert(isConstructor); } Obviously this is not ideal, since you now have an extra useless property on ever...
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What is the purpose of double curly braces in React's JSX syntax?

... an object literal inlined in the prop value. It's the same as var obj = {__html: rawMarkup}; <span dangerouslySetInnerHTML={obj} /> share | improve this answer | fo...
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Append to a file in Go

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
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Characters allowed in a URL

...738 specification: Thus, only alphanumerics, the special characters "$-_.+!*'(),", and reserved characters used for their reserved purposes may be used unencoded within a URL. EDIT: As @Jukka K. Korpela correctly points out, this RFC was updated by RFC 3986. This has expanded and clarified...
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How to do a case sensitive search in WHERE clause (I'm using SQL Server)?

...the link: SELECT 1 FROM dbo.Customers WHERE CustID = @CustID COLLATE SQL_Latin1_General_CP1_CS_AS AND CustPassword = @CustPassword COLLATE SQL_Latin1_General_CP1_CS_AS Or, change the columns to be case sensitive. sh...