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Understanding dict.copy() - shallow or deep?

...mple: original = dict(a=1, b=2, c=dict(d=4, e=5)) new = original.copy() Now let's change a value in the 'shallow' (first) level: new['a'] = 10 # new = {'a': 10, 'b': 2, 'c': {'d': 4, 'e': 5}} # original = {'a': 1, 'b': 2, 'c': {'d': 4, 'e': 5}} # no change in original, since ['a'] is an immutabl...
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java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare();

... YourBackgroundThread(YourActivity parent) { this.parent = parent; } Now the background thread can push Toast messages to the screen. share | improve this answer | foll...
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Array versus List: When to use which?

...e you want to add/remove data, since resizing arrays is expensive. If you know the data is fixed length, and you want to micro-optimise for some very specific reason (after benchmarking), then an array may be useful. List<T> offers a lot more functionality than an array (although LINQ evens i...
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Git/GitHub can't push to master

...o an issue. I created a test project and added it to the local repository. Now I am trying to add files/project to the remote repository. ...
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How do I wrap a selection with an HTML tag in Visual Studio?

... I know this is old and you have probably found the answer by now but I would just like to add for the sake of those who might not know it that this is possible in VS 2010: Select the code you would like to surround. Do ctrl-k ...
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How do I do word Stemming or Lemmatization?

I've tried PorterStemmer and Snowball but both don't work on all words, missing some very common ones. 21 Answers ...
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Uppercase Booleans vs. Lowercase in PHP

...indulge in hating PHP (e.g. just see what Johrn mentioned above, I didn't know that for one), but given that it's basically case-insensitive, there is nothing strange in mixed-case expressions being the same. What is nonsense, however, that it mixes case-sensitivity and case-insensitivity with gene...
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How to enable PHP's openssl extension to install Composer?

...ne extension=php_openssl.dll by removing the semicolon at the beginning. Now you are good to install Composer. share | improve this answer | follow | ...
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Using Python 3 in virtualenv

... location related concerns, relocatable was removed as an option.... is it now unnecessary? is their a workaround? or is it just now completely useless to prepare an app? – J. M. Becker Sep 27 '16 at 21:33 ...
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Resetting a multi-stage form with jQuery

... That :input is handy... now I know I'll use. Thanks Paolo :) +1 – alex Mar 25 '09 at 4:51 ...