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How to test if a string is basically an integer in quotes using Ruby
...i?
!!(self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
...
How to write a cron that will run a script every day at midnight?
...
Here's a good tutorial on what crontab is and how to use it on Ubuntu. Your crontab line will look something like this:
00 00 * * * ruby path/to/your/script.rb
(00 00 indicates midnight--0 minutes and 0 hours--and the *s mean every day of ...
error: writable atomic property cannot pair a synthesized setter/getter with a user defined setter/g
... project (which used to compile just fine), and now I'm seeing a lot of errors of this form:
4 Answers
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Should I size a textarea with CSS width / height or HTML cols / rows attributes?
Every time I develop a new form that includes a textarea I have the following dilemma when I need to specify its dimensions:
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When to use static classes in C# [duplicate]
...ell. They're very easy to use, no instantiation, no disposal, just fire'n'forget. I guess this was my first unwitting attempt at creating a service-oriented architecture - lots of stateless services that just did their job and nothing else. As a system grows however, dragons be coming.
Polymorphism...
Copy a variable's value into another
... to some other variable so that they share the same value. This is how it works:
10 Answers
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How to do a JUnit assert on a message in a logger
I have some code-under-test that calls on a Java logger to report its status.
In the JUnit test code, I would like to verify that the correct log entry was made in this logger. Something along the following lines:
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What is the size limit of a post request?
Sorry if this is duplicate,I would think it would be but couldn't find anything.
9 Answers
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What's the difference between SCSS and Sass?
From what I've been reading, Sass is a language that makes CSS more powerful with variable and math support.
13 Answers
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When and why should I use fragments in Android applications? [duplicate]
...eed the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a third class...