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what exactly is device pixel ratio?
...ear resolution.
Physical resolution: 960 x 640
Logical resolution: 480 x 320
The formula is:
Where:
is the physical linear resolution
and:
is the logical linear resolution
Other devices report different device pixel ratios, including non-integer ones. For example, the Nokia Lumia 1020 ...
Most efficient way to determine if a Lua table is empty (contains no entries)?
... Norman RamseyNorman Ramsey
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How to compare types
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answered Mar 30 '11 at 6:47
JaredParJaredPar
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Placeholder Mixin SCSS/CSS
...-lang.com/docs/yardoc/file.SASS_REFERENCE.html#mixin-content
As of Sass 3.4, this mixin can be written like so to work both nested and unnested:
@mixin optional-at-root($sel) {
@at-root #{if(not &, $sel, selector-append(&, $sel))} {
@content;
}
}
@mixin placeholder {
@include ...
Android emulator and virtualbox cannot run at same time
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13 Answers
13
Active
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Best way to store date/time in mongodb
...st.find()
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:42.389Z") }
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:57.240Z") }
The native type supports a whole range of useful methods out of the box, which you can use in your map-reduce jobs, for example.
If you nee...
What is the purpose of the -nodes argument in openssl?
...t the private key, you can omit -nodes and your key will be encrypted with 3DES-CBC. To encrypt the key, OpenSSL prompts you for a password and it uses that password to generate an encryption key using the key-derivation function EVP_BytesToKey.
Depending on your version of OpenSSL and compiled op...
Get city name using geolocation
...
Alex
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answered Jul 23 '11 at 3:15
MichalMichal
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How do I convert a Ruby class name to a underscore-delimited symbol?
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143
Rails comes with a method called underscore that will allow you to transform CamelCased strings ...
C# equivalent to Java's charAt()?
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Steven V
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answered Aug 27 '10 at 6:10
ZachZach
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