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What's the difference between ES6 Map and WeakMap?

...e: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap): Keys of WeakMaps are of the type Object only. Primitive data types as keys are not allowed (e.g. a Symbol can't be a WeakMap key). Nor can a string, number, or boolean be used as a WeakMap key. A M...
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Should I use alias or alias_method?

I found a blog post on alias vs. alias_method . As shown in the example given in that blog post, I simply want to alias a method to another within the same class. Which should I use? I always see alias used, but someone told me alias_method is better. ...
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How do I get the key at a specific index from a Dictionary in Swift?

... Doesn't work... 'NSDictionary' is not convertible to '_ArrayBuffer<T>' – Chris Mar 7 '15 at 19:12  |  show 6 more c...
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How to automate createsuperuser on django?

... Personally I don't think deleting the user on each build is a good idea. You risk unintentionally deleting any associated records via a cascade delete. A safer option is to simply bail-out if the user already exists (or update the ...
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)

...on struct = {} try: try: #try parsing to dict dataform = str(response_json).strip("'<>() ").replace('\'', '\"') struct = json.loads(dataform) except: print repr(resonse_json) print sys.exc_info() Note: Quotes within the data must be properly escaped ...
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Bash array with spaces in elements

...through its indices, like so, it works if I add the elements either numerically or with escapes: for ((i = 0; i < ${#FILES[@]}; i++)) do echo "${FILES[$i]}" done Any of these declarations of $FILES should work: FILES=(2011-09-04\ 21.43.02.jpg 2011-09-05\ 10.23.14.jpg 2011-09-09\ 12.31.16....
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How to determine whether an object has a given property in JavaScript

... Or even better — Object.prototype.hasOwnProperty.call(x, 'y'), so that property named "hasOwnProperty" would not conflict with inspection process ;) – kangax Dec 24 '09 at 14:03 ...
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How do I protect Python code? [closed]

...ecutable is well-known, and the Python byte-codes are well understood. Usually in cases like this, you have to make a tradeoff. How important is it really to protect the code? Are there real secrets in there (such as a key for symmetric encryption of bank transfers), or are you just being paranoi...
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How to use font-awesome icons from node-modules

I have installed font-awesome 4.0.3 icons using npm install . 10 Answers 10 ...
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Why would one omit the close tag?

...e file (and possibly some other factors I don't want to bore you with). Finally, many PHP frameworks including Symfony, Zend and Laravel (there is no mention of this in the coding guidelines but it follows the suit) and the PSR-2 standard (item 2.2) require omission of the closing tag. PHP manual it...