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Best way to check for “empty or null value”
What is best way to check if value is null or empty string in Postgres sql statements?
10 Answers
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How can I make my custom objects Parcelable?
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Here is a website to create a Parcelable Class from your created class:
http://www.parcelabler.com/
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Transform DateTime into simple Date in Ruby on Rails
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In Ruby 1.9.2 and above they added a .to_date function to DateTime:
http://ruby-doc.org/stdlib-1.9.2/libdoc/date/rdoc/DateTime.html#method-i-to_date
This instance method doesn't appear to be present in earlier versions like 1.8.7.
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When to use generic methods and when to use wild-card?
I am reading about generic methods from OracleDocGenericMethod . I am pretty confused about the comparison when it says when to use wild-card and when to use generic methods.
Quoting from the document.
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How do I drop a foreign key constraint only if it exists in sql server?
... TABLE t
DROP CONSTRAINT IF EXISTS tpartnt
GO
DROP TABLE IF EXISTS t
See http://blogs.msdn.com/b/sqlserverstorageengine/archive/2015/11/03/drop-if-exists-new-thing-in-sql-server-2016.aspx
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SOAP vs REST (differences)
... of the sources of confusion around it, since people tend to call REST any HTTP API that isn't SOAP.
Pushing things a little and trying to establish a comparison, the main difference between SOAP and REST is the degree of coupling between client and server implementations. A SOAP client works like ...
How to install Android SDK Build Tools on the command line?
... also specify various options, for example to force all connections to use HTTP (--no_https), or in order to use proxy server (--proxy_host=address and --proxy_port=port).
To check the available options, use the --help flag. On my machine (Mac), the output is as following:
alex@mbpro:~/sdk/tools...
How to use enums as flags in C++?
Treating enum s as flags works nicely in C# via the [Flags] attribute, but what's the best way to do this in C++?
22 Ans...
How to get the type of T from a member of a generic class or method?
Let say I have a generic member in a class or method, so:
16 Answers
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Lambda Expression and generic method
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