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Using R to download zipped data file, extract, and import data
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Zip archives are actually more a 'filesystem' with content metadata etc. See help(unzip) for details. So to do what you sketch out above you need to
Create a temp. file name (eg tempfile())
Use download.file() to fetch the file into the temp. file
Use unz() to extract the target file from...
Load dimension value from res/values/dimension.xml from source code
...multiplied times the screen density factor
(1.5 for hdpi, 2.0 for xhdpi, etc).
I think it is good to get the value as per resolution but if you not want to do this give this in px.......
Density-independent pixel (dp)
A virtual pixel unit that you should use when defining UI layout, to express...
Does Python support short-circuiting?
... it's not just 0, it's 0.0, 0j, decimal.Decimal(0), fractions.Fraction(0), etc.), as are all collections with length 0 (so on top of what you listed, b'' [Py3], u'' [Py2] and set()/frozenset() are all built-ins that evaluate as falsy), but user-defined/third-party types can define their own (with __...
Write applications in C or C++ for Android? [closed]
...nvisage android running on a variety of different devices (CPUs, displays, etc). The best way to enable development is therefore to use (portable) managed code that targets the Dalvik VM. For this reason, the Android SDK doesn't support C/C++.
BUT, take a look at this page:
Android includes a s...
Easy way to concatenate two byte arrays
...sult = concat(a, b);
It will also work for concatenating 3, 4, 5 arrays, etc.
Doing it this way gives you the advantage of fast arraycopy code which is also very easy to read and maintain.
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Android studio - Failed to find target android-18
...ets']
}
// Move the tests to tests/java, tests/res, etc...
instrumentTest.setRoot('tests')
// Move the build types to build-types/<type>
// For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ..
// This...
Change font color for comments in vim
...LightBlue
Add this to your .vimrc file which is either in your ~ or the /etc/vim directory. This will make it permanent. I haven't tested this with gvim.
I also have set background=light before I set comment color. I like all the colors it created except for the comments.
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Client on node: Uncaught ReferenceError: require is not defined
... This is my personal favorite.
Webpack - Does everything (bundles JS, CSS, etc). Made popular by the surge of React.js. Notorious for its difficult learning curve.
Rollup - New contender. Leverages ES6 modules. Includes tree-shaking abilities (removes unused code).
You can read more about my compa...
Deserializing a JSON into a JavaScript object
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or Map() objects etc, how do you do proper deserialisation
– Ewan
Mar 18 at 11:36
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Add a default value to a column through a migration
... states are usually explicit, such as the presence of a column, it's type, etc. The change can be rolled back as it's shown there if and only if there was a valid explicit default previously. Since it's common that defaults are undefined, you might have an issue there.
– Elindo...