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Why can't the tag contain a tag inside it?
...look for allowed containment relations is the HTML spec. See, for example, http://www.w3.org/TR/html4/sgml/dtd.html. It specifies which elements are block elements and which are inline. For those lists, search for the section marked "HTML content models".
For the P element, it specifies the followi...
XPath query to get nth instance of an element
...in the "Abbreviated Syntax" section of the XML Path Language specification http://www.w3.org/TR/xpath/#path-abbrev that provided a clue.
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Fragment or Support Fragment?
...oid versions and provide APIs for recommended user
interface patterns.
http://developer.android.com/tools/support-library/features.html
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Show loading image while $.ajax is performed
...ying sizes. A good site to create your own custom indeterminate spinner is http://ajaxload.info/
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How can I tell where mongoDB is storing data? (its not in the default /data/db!)
...ULD print the current path precisely for all mongodb version stackoverflow.com/a/52036070/248616
– Nam G VU
Jun 2 '19 at 10:51
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Optimal way to concatenate/aggregate strings
...e SQL Database:
STRING_AGG() in PostgreSQL, SQL Server 2017 and Azure SQL
https://www.postgresql.org/docs/current/static/functions-aggregate.html
https://docs.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql
GROUP_CONCAT() in MySQL
http://dev.mysql.com/doc/refman/5.7/en/group-by-f...
What is the `zero` value for time.Time in Go?
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The zero value for time.Time is 0001-01-01 00:00:00 +0000 UTC See http://play.golang.org/p/vTidOlmb9P
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What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
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iOS app, programmatically get build version
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Why java.util.Optional is not Serializable, how to serialize the object with such fields
The Enum class is Serializable so there is no problem to serialize object with enums. The other case is where class has fields of java.util.Optional class. In this case the following exception is thrown: java.io.NotSerializableException: java.util.Optional
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