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Get exception description and stack trace which caused an exception, all as a string

... including local variable values, source code context, function parameters etc.. For instance for this code... import cgitb cgitb.enable(format='text') def func2(a, divisor): return a / divisor def func1(a, b): c = b - 5 return func2(a, c) func1(1, 5) we get this exception output....
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

...c.rindex(/:\d+(:in `.*')?$/) file = $` if /\A\((.*)\)/ =~ file # eval, etc. raise LoadError, "require_relative is called in #{$1}" end absolute = File.expand_path(relative_feature, File.dirname(file)) require absolute end It basically just uses what Theo answered, but so you can stil...
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What is a “callable”?

...ember which indicates callability otherwise (such as in functions, methods etc.) The method named __call__ is (according to the documentation) Called when the instance is ''called'' as a function Example class Foo: def __call__(self): print 'called' foo_instance = Foo() foo_instance(...
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Does Python have “private” variables in classes?

...te. But the principle reasoning for hard enforced private in C++ and Java (etc) , compiler optimisation, doesn't really exist in Python, so by-convention private is good enough. Python convention generally is that it trusts that you'll behave yourself without supervision. (And its a newbie trap, but...
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How do I import other TypeScript files?

...gt; /// <reference path="components/someclass.ts"/> class Foo { } etc. These paths are relative to the current file. Your example: /// <reference path="moo.ts"/> class bar extends moo.foo { } share ...
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Is there a code obfuscator for PHP? [closed]

...ers have written here about not using obfuscation because it can be broken etc: I have only one thing to answer them - don't lock your house door because anyone can pick your lock. This is exactly the case, obfuscation is not meant to prevent 100% code theft. It only needs to make it a time-consumin...
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How to open, read, and write from serial port in C?

... are B115200, B230400, B9600, B19200, B38400, B57600, B1200, B2400, B4800, etc. The values for parity are 0 (meaning no parity), PARENB|PARODD (enable parity and use odd), PARENB (enable parity and use even), PARENB|PARODD|CMSPAR (mark parity), and PARENB|CMSPAR (space parity). "Blocking" sets whe...
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What is the copy-and-swap idiom?

...ap for our type, provide an in-class swap along-side a free-function swap, etc. But this is all unnecessary: any proper use of swap will be through an unqualified call, and our function will be found through ADL. One function will do. ‡The reason is simple: once you have the resource to yourself,...
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Why prefer two's complement over sign-and-magnitude for signed numbers?

...be added. Since you want the most basic operations (addition, subtraction, etc) to be as fast as possible, you need to store numbers in a way that lets you use the simplest algorithms possible. Additionally, in the "intuitive" storage method, there are two zeroes: 0000 "zero" 1000 "negative zero...
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Tools to selectively Copy HTML+CSS+JS From A Specific Element of DOM [closed]

...idn't seem like a good idea, I gave up on this attempt. Second attempt - getComputedStyle() Then, I've started from something that @CollectiveCognition suggested - getComputedStyle(). However, I really wanted to separate CSS form HTML instead of inlining all styles. Problem 1 - separating CSS fro...