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How to check if an object is nullable?
How do I check if a given object is nullable in other words how to implement the following method...
14 Answers
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How do I add a foreign key to an existing SQLite table?
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You can't.
Although the SQL-92 syntax to add a foreign key to your table would be as follows:
ALTER TABLE child ADD CONSTRAINT fk_child_parent
FOREIGN KEY (parent_id)
REFERENCES parent(id);
SQLite doesn't support the ADD CO...
What is the JavaScript >>> operator and how do you use it?
I was looking at code from Mozilla that add a filter method to Array and it had a line of code that confused me.
7 Answers
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In C#, how to check if a TCP port is available?
In C# to use a TcpClient or generally to connect to a socket how can I first check if a certain port is free on my machine?
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How to solve Permission denied (publickey) error when using Git?
...te key pair set before
This info is working on theChaw but can be applied to all other git repositories which support SSH pubkey authentications. (See gitolite, gitlab or github for example.)
First start by setting up your own public/private key pair set. This
can use either DSA or RSA, so ba...
Should sorting logic be placed in the model, the view, or the controller? [closed]
I have a drop down list that displays values from a table to the end user. I would like to have these values be sorted alphabetically.
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Storing money in a decimal column - what precision and scale?
I'm using a decimal column to store money values on a database, and today I was wondering what precision and scale to use.
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Does using final for variables in Java improve garbage collection?
Today my colleagues and me have a discussion about the usage of the final keyword in Java to improve the garbage collection.
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How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?
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You need to prevent the default action for the click event (i.e. navigating to the link target) from occurring.
There are two ways to do this.
Option 1: event.preventDefault()
Call the .preventDefault() method of the event object p...
How do I protect Python code? [closed]
I am developing a piece of software in Python that will be distributed to my employer's customers. My employer wants to limit the usage of the software with a time restricted license file.
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