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How do I correctly clean up a Python object?

__del__(self) above fails with an AttributeError exception. I understand Python doesn't guarantee the existence of "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs...
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What does the Reflect object do in JavaScript?

... http://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect-object and it sounds similar to the Proxy object apart from the realm and loader functionality. ...
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Adding a column to a data.frame

...xt, [[.data.frame. Data frames can be indexed in several modes. When [ and [[ are used with a single vector index (x[i] or x[[i]]), they index the data frame as if it were a list. my.dataframe["new.col"] <- a.vector my.dataframe[["new.col"]] <- a.vector The data.frame method for $, ...
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Google Play app description formatting

I've made an Android application that is available on Google Play. Now I want to add some more formatting to my app description (eg. indent, links, lists..). But I cannot find any website where possible formatting is listed. Google Help pages cannot help me either on this subject. There exists a lot...
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What are the best Haskell libraries to operationalize a program? [closed]

...ogram to do in order to consider it "operationalized" – that is, running and maintainable in a measurable and verifiable way by both engineers and operations staff. For my purposes, an operationalized program must: ...
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Prevent browser from loading a drag-and-dropped file

I'm adding an html5 drag and drop uploader to my page. 10 Answers 10 ...
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Config Error: This configuration section cannot be used at this path

...ents over the years have certified this works all the way up to Windows 10 and Server 2019, as well. share | improve this answer | follow | ...
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Eclipse Kepler for OS X Mavericks request Java SE 6

I have just made a clean installation of OS X Mavericks , and I have downloaded Eclipse Kepler , but if I execute it, gives me this message: ...
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Nginx reverse proxy causing 504 Gateway Timeout

... @Dax Fohl: That's curious. I pulled down the source and had a quick look and from what I can see, setting any proxy_ setting aside from the proxy_pass will initialize a bunch of settings which I presume will run the proxy in a different way so maybe setting anything will give ...
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Release generating .pdb files, why?

...even in the same order as) the generated assembly code. PDB files help you and the debugger out, making post-mortem debugging significantly easier. You make the point that if your software is ready for release, you should have done all your debugging by then. While that's certainly true, there are ...