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Check if a Postgres JSON array contains a string
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As of PostgreSQL 9.4, you can use the ? operator:
select info->>'name' from rabbits whe...
What is the type of lambda when deduced with “auto” in C++11?
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The type of a lambda expression is unspecified.
But they are generally mere syntactic sugar ...
How to reset or change the MySQL root password?
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Convert integer to string Jinja
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edited Apr 3 '15 at 13:58
Ajoy
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JavaScript ternary operator example with functions
I am using jQuery 1.7.1
6 Answers
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What is the apply function in Scala?
...hat takes an Int parameter and returns an Int will have OO type of Function1[Int,Int].
// define a function in scala
(x:Int) => x + 1
// assign an object representing the function to a variable
val f = (x:Int) => x + 1
Since everything is an object in Scala f can now be treated as a re...
Difference between var_dump,var_export & print_r
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var_dump is for debugging purposes. var_dump always prints the result.
// var_dump(array('', ...
Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...line to your Post model, after specifying has_attached_file :image
Option 1: Validate content type
validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
-OR- another way
validates_attachment :image, content_type: { content_type: ["im...
Is there any way to view the currently mapped keys in Vim?
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answered Oct 4 '11 at 2:38
mattr-mattr-
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Stop pip from failing on single package when installing with requirements.txt
...ine with pip install may be a workaround.
cat requirements.txt | xargs -n 1 pip install
Note: -a parameter is not available under MacOS, so old cat is more portable.
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