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Getting the difference between two sets
... This solution is not fully correct. Because the order of test1 and test2 makes a difference.
– Bojan Petkovic
Nov 1 '16 at 22:34
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How to print binary tree diagram?
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I've created simple binary tree printer. You can use and modify it as you want, but it's not optimized anyway. I think that a lot of things can be improved here ;)
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class BTreePrinterTest {...
How to send an email using PHP?
I am using PHP on a website and I want to add emailing functionality.
14 Answers
14
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Kotlin Ternary Conditional Operator
... code is equivalent:
if (a) b else c
The distinction between expression and statement is important here. In Java/C#/JavaScript, if forms a statement, meaning that it does not resolve to a value. More concretely, you can't assign it to a variable.
// Valid Kotlin, but invalid Java/C#/JavaScript
v...
How to log out user from web site using BASIC authentication?
... automatically.
What you have to do is have the user click a logout link, and send a ‘401 Unauthorized’ in response, using the same realm and at the same URL folder level as the normal 401 you send requesting a login.
They must be directed to input wrong credentials next, eg. a blank username-...
How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
...archable"} in this case the index was in fact a multi-column(searchable_id and searchable_type) and the addition of the namespace in the generated name became very long.
– mkrinblk
Jan 3 '17 at 22:56
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Cancel split window in Vim
...window just one window without cancelling all of my open windows. I have 5 and do not want to "quit", just want to get out of split window.
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Getting indices of True values in a boolean list
...return a list of all the switches that are on. Here "on" will equal True and "off" equal False . So now I just want to return a list of all the True values and their position. This is all I have but it only return the position of the first occurrence of True (this is just a portion of my code...
throwing exceptions out of a destructor
...meaning.
// Post C++11 destructors are by default `noexcept(true)` and
// this will (by default) call terminate if an exception is
// escapes the destructor.
//
// But this example is designed to show that terminate is called
// if two exceptions are p...
foreach with index [duplicate]
Is there a C# equivalent of Python's enumerate() and Ruby's each_with_index ?
10 Answers
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