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Constructors in JavaScript objects

... this.set_name = function (value) { if (typeof value != 'string') throw 'Name must be a string'; if (value.length < 2 || value.length > 20) throw 'Name must be 2-20 characters long.'; name = value; }; }; ...
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Iterating over dictionaries using 'for' loops

...onds to', number) It's a good idea to get into the habit of using format strings: for letter, number in d.items(): print('{0} corresponds to {1}'.format(letter, number)) share | improve this...
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Email Address Validation in Android on EditText [duplicate]

...Message); final TextView textView = (TextView)findViewById(R.id.text); String email = emailValidate.getText().toString().trim(); String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+"; emailValidate .addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) { ...
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?

...ple, I like to use the following style: (list filter (...) map (...) mkString ", " ) That's the same thing as: list filter (...) map (...) mkString ", " Now, why am I using parenthesis here, if filter and map take a single parameter? It's because I'm passing anonymous functions to them. I c...
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How to convert JSON data into a Python object

...ad solution. Not scalable at all. You'll need to maintain fields' names as string and as field. If you'll want to refactor your fields the decoding will fail (of course the already serialized data will no longer be relevant anyway). The same concept is already implemented well with jsonpickle ...
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How to have stored properties in Swift, the same way I had on Objective-C?

... @VyachaslavGerchicov [String]? is a struct, this is the same case as for Int, Bool. You could use NSArray to keep a collection of NSString instances. – Wojciech Nagrodzki Feb 14 '19 at 9:17 ...
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?

...o.plist file, and changed this bit: <key>JVMVersion</key> <string>1.6*</string> to: <key>JVMVersion</key> <string>1.8*</string> After launching, everything was golden. sh...
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Decoding and verifying JWT token using System.IdentityModel.Tokens.Jwt

... deserialising and serialising security tokens. The class has a ReadToken(String) method that will take your base64 encoded JWT string and returns a SecurityToken which represents the JWT. The SecurityTokenHandler also has a ValidateToken(SecurityToken) method which takes your SecurityToken and cr...
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“Unknown provider: aProvider

...m invoke in injector.js, recognizable from the "Incorrect injection token" string: The locals parameter (mangled to d in my code) gives a pretty good idea about which object in your source is the problem: A quick grep over our source finds many instances of modalInstance, but going from there,...
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What does -> mean in Python function definitions?

... It's a function annotation. In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return ...