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How do I parse JSON with Ruby on Rails? [duplicate]
...od source is
data = MultiJson.load(json, options)
Then in your Gemfile, include the gems you want to use. For example,
group :production do
gem 'oj'
end
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How to scroll to top of page with JavaScript/jQuery?
... want to point out that from my testing (on modern/2018 versions of chrome included) that this solution works more reliably
– mattLummus
Dec 17 '18 at 18:27
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SQL, Postgres OIDs, What are they and why are they useful?
...wrap around at 2³²-1. OID are also used to identify data types (see /usr/include/postgresql/server/catalog/pg_type_d.h).
In my experience, the feature is generally unused in most postgres-backed applications (probably in part because they're non-standard), and their use is essentially deprecated:
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How to get the last character of a string in a shell?
...nswer:
echo -n $str | tail -c 1
Note the -n is just so the echo doesn't include a newline at the end.
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How do I parse command line arguments in Java?
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I challenge someone to include the date of the last stable release of each parser.
– Sledge
Apr 1 '19 at 2:47
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How to add images to README.md on GitHub?
...pictures at the root of the repo to set an avatar to the repo. I wanted to include this pic to the README.md.
– avi.elkharrat
Oct 31 '18 at 10:02
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Any way to Invoke a private method?
...xecution protected methods via reflection. It supports any types of params including generics, autoboxed params and null values
@SuppressWarnings("unchecked")
public static <T> T executeSuperMethod(Object instance, String methodName, Object... params) throws Exception {
return executeMet...
How can I debug my JavaScript code? [closed]
...ck);
gives you Java-like stack trace to point of new Error() invocation (including path to file and line number!!).
Both %o and new Error().stack available in Chrome and Firefox.
With such powerful tools you make assumption whats going wrong in your JS, put debug output (don't forget wrap in if ...
MySQL ON DUPLICATE KEY - last insert id?
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Singleton: How should it be used
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@enzom83: A capital-S Singleton includes code to ensure its singleness. If you only want one instance, you can lose that code and simply create one instance yourself...giving you the memory savings of a single instance, plus the savings from the obviation ...