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Foreign key constraints: When to use ON UPDATE and ON DELETE
... the foreign key constraints are quite advanced.
We'll take an example, a company table with a user table containing people from theses company
CREATE TABLE COMPANY (
company_id INT NOT NULL,
company_name VARCHAR(50),
PRIMARY KEY (company_id)
) ENGINE=INNODB;
CREATE TABLE USER (
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@OneToMany List vs Set difference
... And for the detail of what happens with a list, see stackoverflow.com/q/1995080/2495717.
– ben3000
May 30 '16 at 3:27
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...nterested in a link if any just to explain the "why" like the OP and other commenters are asking. Your diagram makes sense except Array[4] is nil. Array[3] is :jelly. I would expect Array[4,N] to be nil but it's [] like the OP says. If it's a place, it's a pretty useless place because Array[4, -...
How to make maven build platform independent?
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Installing Bootstrap 3 on Rails App
...I also found that directly inserting the files runs into less issues in precompiling assets (e.g., for pushing to Heroku).
– Amy.js
Sep 9 '13 at 22:30
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How to detect Safari, Chrome, IE, Firefox and Opera browser?
...rowser-specific characteristics:
Internet Explorer: JScript's Conditional compilation (up until IE9) and document.documentMode.
Edge: In Trident and Edge browsers, Microsoft's implementation exposes the StyleMedia constructor. Excluding Trident leaves us with Edge.
Edge (based on chromium): The use...
Intellij IDEA show javadoc automatically
When I am coding at Netbeans it autocompletes the code and show Javadocs. However when I am using Intellij IDEA if I click Ctrl+Space I can see the auto-complete and if I click Ctrl+Q I can see the javadoc seperately.
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SVN checkout the contents of a folder, not the folder itself
...out the trunk folder of a project into my public_html directory using this command (while in public_html):
4 Answers
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Correct approach to global logging in Golang
...arate logger. It's probably a good idea to create a logger for each bigger component of your project. For example, if your project uses a SMTP service for sending mails, creating a separate logger for the mail service sounds like a good idea so that you can filter and turn off the output separately....
Plotting with seaborn using the matplotlib object-oriented interface
...ctions in an object-oriented context, but all of your customization has to come after you've called the function.
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