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Why does (i
... j is evaluated to true, because auto unboxing happens for int
comparisons and then both i and j hold the default value, 0.
j <= i is evaluated to true because of the above reason.
i != j is evaluated to true, because both i and j are
different objects. And while comparing objects, there isn't an...
Best practices for API versioning? [closed]
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This is a good and a tricky question. The topic of URI design is at the same time the most prominent part of a REST API and, therefore, a potentially long-term commitment towards the users of that API.
Since evolution of an application and...
How can I run a function from a script in command line?
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If the script only defines the functions and does nothing else, you can first execute the script within the context of the current shell using the source or . command and then simply call the function. See help source for more information.
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Dependency Injection vs Factory Pattern
... when it comes to usage/design the difference between dependency injection and factory is blurred or thin.
28 Answers
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scp with port number specified
...lt
The lowercase p switch is used with scp for the preservation of times and modes.
Here is an excerpt from scp's man page with all of the details concerning the two switches, as well as an explanation of why uppercase P was chosen for scp:
-P port Specifies the port to connect to on the r...
What is the difference between Google App Engine and Google Compute Engine?
...ine is a Platform-as-a-Service. It means that you simply deploy your code, and the platform does everything else for you. For example, if your app becomes very successful, App Engine will automatically create more instances to handle the increased volume.
Read more about App Engine
Compute Engine ...
Does PHP have threading?
... found this PECL package called threads , but there is not a release yet. And nothing is coming up on the PHP website.
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Count number of rows within each group
I have a dataframe and I would like to count the number of rows within each group. I reguarly use the aggregate function to sum data as follows:
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How do I enlarge an EER Diagram in MySQL Workbench?
I am working on a moderately complex schema in MySQL Workbench, and the single page of the EER diagram is now full up. Does anyone know how to enlarge it to two or more pages?
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How to test an Internet connection with bash?
... very nice... but of course assumes the box has wget. embedded devices and whatnot probably won't. ;)
– Eric Sebasta
Jun 8 '15 at 19:03
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