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Google Authenticator implementation in Python

...cret (it must be correct parameter for base64.b32decode()) - preferably 16-char (no = signs), as it surely worked for both script and Google Authenticator. Use get_hotp_token() if you want one-time passwords invalidated after each use. In Google Authenticator this type of passwords i mentioned as b...
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String to LocalDate

How can i convert a string to a LocalDate ? 5 Answers 5 ...
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?

Assuming that arraylist is defined as ArrayList<String> arraylist , is arraylist.removeAll(arraylist) equivalent to arraylist.clear() ? ...
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Using Java 8's Optional with Stream::flatMap

...de() { return optional.hashCode(); } @Override public String toString() { return optional.toString(); } } You will see that I added flatStream(), as here: public Stream<T> flatStream() { if (!optional.isPresent()) { return Stream.empty(); } ...
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Convert integer to binary in C#

... Your example has an integer expressed as a string. Let's say your integer was actually an integer, and you want to take the integer and convert it to a binary string. int value = 8; string binary = Convert.ToString(value, 2); Which returns 1000. ...
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The Ruby %r{ } expression

... this regexp matches all strings that ends with .gif, .jpg... you could replace it with /\.(gif|jpg|jpeg|png)$/i share | improve this answer ...
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What does android:layout_weight mean?

... In a nutshell, layout_weight specifies how much of the extra space in the layout to be allocated to the View. LinearLayout supports assigning a weight to individual children. This attribute assigns an "importance" value to a view, and allows it to expand to fill any remaining spa...
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What is the motivation for bringing Symbols to ES6?

...t that the :symbol notion in Ruby is needless; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate things in JS with that. ...
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I need to securely store a username and password in Python, what are my options?

...assword` to save username onto keyring # we're just using some known magic string in the username field keyring.set_password(service_id, MAGIC_USERNAME_KEY, username) Later to get your info from the keyring # again, abusing `get_password` to get the username. # after all, the keyring is just a ke...
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Best practice? - Array/Dictionary as a Core Data Entity Attribute [closed]

... I had a similar issue. In my case, I wanted to map an array of strings. I followed Barry's advice and finally got it working. Here is what some of the code looks like (which will hopefully clarify things for anyone else who runs into this)... My Entity looks something like this: @int...