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I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]
...itional dependencies and use SecureRandom which is builtin:
SecureRandom.uuid #=> "1ca71cd6-08c4-4855-9381-2f41aeffe59c"
See other possible formats here.
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Remove columns from DataTable in C#
...t which I get a DataTable from that I am being passed back from a function call. It has 15-20 columns, however I only want 10 columns of the data.
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What's the Android ADB shell “dumpsys” tool and what are its benefits?
...s tool do not forget to add permission into your android manifest automatically android.permission.DUMP
Try to test all commands to learn more about dumpsys. Happy dumping!
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Querying DynamoDB by date
...pdated Answer:
DynamoDB allows for specification of secondary indexes to aid in this sort of query. Secondary indexes can either be global, meaning that the index spans the whole table across hash keys, or local meaning that the index would exist within each hash key partition, thus requiring the ...
How do I make a placeholder for a 'select' box?
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Why did you called the change function explicitly.
– Foreever
Jun 3 '14 at 8:57
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What is the bower (and npm) version syntax?
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In a nutshell, the syntax for Bower version numbers (and NPM's) is called SemVer, which is short for 'Semantic Versioning'. You can find documentation for the detailed syntax of SemVer as used in Bower and NPM on the API for the semver parser within Node/npm. You can learn more about the und...
How to make a DIV visible and invisible with JavaScript
...t then
[DIV].style.visibility='visible'
OR
[DIV].style.visibility='hidden'
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Check if a string is null or empty in XSLT
...me == null || categoryName.equals(""))
For more details e.g., distinctly identifying null vs. empty, see johnvey's answer below and/or the XSLT 'fiddle' I've adapted from that answer, which includes the option in Michael Kay's comment as well as the sixth possible interpretation.
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Resize image to full width and fixed height with Picasso
... where just using .centerInside() was crashing with Center inside requires calling resize with positive width and height. error message.
– Rock Lee
May 10 '17 at 21:17
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How to affect other elements when one element is hovered
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If the cube is directly inside the container:
#container:hover > #cube { background-color: yellow; }
If cube is next to (after containers closing tag) the container:
#container:hover + #cube { background-color: yellow; }
If the cube is somewhe...