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UnboundLocalError on local variable when reassigned after first use

...es in functions differently depending on whether you assign values to them from inside or outside the function. If a variable is assigned within a function, it is treated by default as a local variable. Therefore, when you uncomment the line you are trying to reference the local variable c before ...
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preventDefault() on an tag

... Alternatively, you could just return false from the click event: $('div.toggle').hide(); $('ul.product-info li a').click(function(event){ $(this).next('div').slideToggle(200); + return false; }); Which would stop the A-Href being triggered. Note however, f...
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What is the difference between Android margin start/end and right/left?

...exists above API 17. However, I can't see why your left/right would differ from start/end; I'm curious. – Liggliluff Feb 5 '17 at 14:19 2 ...
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How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i

...ot and data.table, and thus has tons of these warnings, which have kept me from noticing other more important warnings that really were problems I needed to fix. – Ken Williams Nov 25 '13 at 20:06 ...
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Usage of @see in JavaDoc?

...dA calls methodB is an implementation detail and there is no real relation from the outside, you don't need a link here. share | improve this answer | follow |...
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What's the point of NSAssert, actually?

...gging/unit testing, and also when you provide frameworks to stop the users from doing "evil" things. share | improve this answer | follow | ...
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Why do python lists have pop() but not push()

... The tutorial seems to suggest that it simply pushes and pops from the end: "The list methods make it very easy to use a list as a stack, where the last element added is the first element retrieved (“last-in, first-out”). To add an item to the top of the stack, use append(). To ret...
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Best way to make Java's modulus behave like it should with negative numbers?

...y fall into congruence classes. You are free to choose whatever candidate from that class for your notation purposes, but the idea is that it maps to all of that class, and if using a specific other candidate from it makes a certain problem significantly simpler (choosing -1 instead of n-1 for exam...
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How do I have an enum bound combobox with custom string formatting for enum values?

...r display names without much hassle. Look into the TypeConverter's ConvertFrom/ConvertTo methods, and use reflection to read attributes on your enum fields. share | improve this answer | ...
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NSLog an object's memory address in overridden description method

...decided is relevant to debugging in any superclasses you may be inheriting from. – Tommy Jun 2 '13 at 20:03 7 ...