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Why is there no Convert.toFloat() method?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Drop unused factor levels in a subsetted data frame
...data: to automatically download and install the perl". Use droplevels from baseR (stackoverflow.com/a/17218028/9295807)
– Vrokipal
Jun 20 '18 at 19:12
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What is the purpose of “&&” in a shell command?
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&& lets you do something based on whether the previous command completed successfully - that's why you tend to see it chained as do_something && do_something_else_that_depended_on_something.
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console.log javascript [Function]
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C++ catching all exceptions
...dots.
However, because C++ exceptions are not necessarily subclasses of a base Exception class, there isn't any way to actually see the exception variable that is thrown when using this construct.
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Run a Java Application as a Service on Linux
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@JackDaniel on debian-based distros, like debian itself and ubuntu, you can add that script to /etc/init.d. Then you can invoke it like this: /etc/init.d/MyService start. And you can make it start automatically by running update-rc.d MyService def...
C++ compile error: has initializer but incomplete type
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Using Python 3 in virtualenv
...o apt-get install python3 python3-pip virtualenvwrapper
Create a Python3 based virtual environment. Optionally enable --system-site-packages flag.
mkvirtualenv -p /usr/bin/python3 <venv-name>
Set into the virtual environment.
workon <venv-name>
Install other requirements using pi...
Hibernate: “Field 'id' doesn't have a default value”
...nges made to the model or to the ORM may not reflect accurately on the database even after an execution of SchemaUpdate.
If the error actually seems to lack a sensible explanation, try recreating the database (or at least creating a new one) and scaffolding it with SchemaExport.
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Android: Rotate image in imageview by an angle
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For completeness here is the line based on the ImageView's values: matrix.postRotate( 180f, imageView.getDrawable().getBounds().width()/2, imageView.getDrawable().getBounds().height()/2);
– Stefan Hoth
Sep 12 '12 at 22:1...