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How do I launch the Android emulator from the command line?
...om the terminal. I have successfully created the HelloWorld project and now I'm trying to run it from the command line in the Android emulator. Which command runs the emulator for my HelloWorld project?
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How to call a Python function from Node.js
...
Easiest way I know of is to use "child_process" package which comes packaged with node.
Then you can do something like:
const spawn = require("child_process").spawn;
const pythonProcess = spawn('python',["path/to/script.py", arg1, arg2, ....
How do I get the current date in JavaScript?
...It doesn't consider TimezoneOffset. At my time of testing, I was seeking "now" and I got "yesterday". stackoverflow.com/questions/13646446/…
– mickmackusa
Jun 26 '14 at 15:13
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How to access component methods from “outside” in ReactJS?
...t;
</div>
);
}
}
Note: This will only work if the child component is declared as a class, as per documentation found here: https://facebook.github.io/react/docs/refs-and-the-dom.html#adding-a-ref-to-a-class-component
Update 2019-04-01: Changed example to use a class ...
Converting string from snake_case to CamelCase in Ruby
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If you're using Rails, String#camelize is what you're looking for.
"active_record".camelize # => "ActiveRecord"
"active_record".camelize(:lower) # => "activeRecord"
If you want to get an act...
ASP.NET MVC: No parameterless constructor defined for this object
... only have this problem (no parameterless bla bla...) during serialization if I define a constructor, and not a parameterless contructor. I mean, in this example, if you delete the constructor you defined ( public MyModel(IHelper helper) {} ) the problem disappears... so everytime you create a const...
getting the screen density programmatically in android?
...g point scaling factor from the reference density (160dpi). The same value now provided by metrics.densityDpi can be calculated
int densityDpi = (int)(metrics.density * 160f);
share
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improve this...
What's the point of map in Haskell, when there is fmap?
...feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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How to redirect to a 404 in Rails?
...self, there's no reason to; Rails has this functionality built in already. If you want to show a 404 page, create a render_404 method (or not_found as I called it) in ApplicationController like this:
def not_found
raise ActionController::RoutingError.new('Not Found')
end
Rails also handles Abs...
Failed to Attach to Process ID Xcode
...xperienced this problem?
Yesterday I still can run my app in simulator but now I cannot run my app since Xcode prints this error in console:
...