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What are “named tuples” in Python?
...ight object types. Named tuple instances can be referenced using object-like variable dereferencing or the standard tuple syntax. They can be used similarly to struct or other common record types, except that they are immutable. They were added in Python 2.6 and Python 3.0, although there is a re...
What is the difference between is_a and instanceof?
...es to true.
is_a(MyExtendingClass::class, MyBaseClass::class, true);
The key difference in the new behavior between instanceof and is_a() is that instanceof will always check that the target is an instantiated object of the specified class (including extending classes), whereas is_a() only require...
Any difference between First Class Function and High Order Function
...variable, pass it around etc. Higher-order functions are functions that work on other functions, meaning that they take one or more functions as an argument and can also return a function.
The “higher-order” concept can be applied to functions in general, like functions in the mathematical sens...
Create a new database with MySQL Workbench
Being new to MySQL, I have installed the latest version of the MySQL Workbench (5.2.33). I would like to know how you can create a database with this application. In the Overview tab of the SQL editor there are few "MySQL Schema" displayed, are these schemas the existing databases?
...
How to convert IEnumerable to ObservableCollection?
...n = new ObservableCollection<YourType>(myIEnumerable);
This will make a shallow copy of the current IEnumerable and turn it in to a ObservableCollection.
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Wrong Manifest.mf in IntelliJ IDEA created .jar
I'm trying to package a project using OptaPlanner 6.0.1 libraries into a .jar through IntelliJ IDEA's jar artifact but instead of my manifest.mf containing the standard
...
make div's height expand with its content
...lex;
flex-direction: column;
min-height: 100vh;
}
header {
background-color: #3F51B5;
color: #fff;
}
section.content {
flex: 1;
}
footer {
background-color: #FFC107;
color: #333;
}
<div class="flex-container">
<header>
<h1>
Header ...
How to get the selected radio button’s value?
I’m having some strange problem with my JS program. I had this working properly but for some reason it’s no longer working. I just want to find the value of the radio button (which one is selected) and return it to a variable. For some reason it keeps returning undefined .
...
Show pending migrations in rails
Is there a rake task that shows the pending migrations in a rails app?
10 Answers
10
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Why not use HTTPS for everything?
...TTPS for the entire site instead of just for purchases/logins? I would think it would make more sense just to encrypt the entire site, and protect the user entirely. It would prevent problems such as deciding what has to be secured because everything would be, and it's not really an inconvenience to...