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What is the difference between pluck and collect in Rails?
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COUNT DISTINCT with CONDITIONS
...me;
The first count(distinct...) is easy.
The second one, looks somewhat complex, is actually the same as the first one, except that you use case...when clause. In the case...when clause, you filter only positive values. Zeros or negative values would be evaluated as null and won't be included in ...
How to call function from another file in go language?
... function with a given name in a package.
Remove the main in test2.go and compile the application. The demo function will be visible from test1.go.
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Do browsers send “\r\n” or “\n” or does it depend on the browser?
...e terminator for message-header fields is the sequence CRLF. However, we recommend that applications, when parsing such headers, recognize a single LF as a line terminator and ignore the leading CR.
I think that is a good strategy in general: be strict about what you produce but liberal in what yo...
Where to define custom error types in Ruby and/or Rails?
... include the exception file. See this example, again from httparty: github.com/jnunemaker/httparty/blob/…
– Jason Swett
Apr 15 '14 at 20:05
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How can I edit a view using phpMyAdmin 3.2.4?
I need to simply edit a very complicated view in phpMyAdmin 3.2.4 but I cannot figure how to do that. Any suggestions?
Thanks!
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WebException how to get whole response with a body?
...this case it's obvious to the attention-paying reader and @iwtu, but Fully comprehensive answers can make the real difference to the beginners reading this answer;)
– Jeroen
Nov 18 '16 at 12:18
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Replace all non-alphanumeric characters in a string
...doing more than one replace, this will perform slightly quicker if you pre-compile the regex, e.g., import re; regex = re.compile('[^0-9a-zA-Z]+'); regex.sub('*', 'h^&ell.,|o w]{+orld')
– Chris
Jun 2 '18 at 15:47
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Testing Abstract Classes
...oncrete methods, and this concrete methods can be tested.
It is not so uncommon, when writing some library code, to have certain base class that you expect to extend in your application layer. And if you want to make sure that library code is tested, you need means to UT the concrete methods of ab...
Cast a Double Variable to Decimal
...ller. A double value may be out of range for a decimal. See: stackoverflow.com/questions/7817866/…
– Guffa
Aug 14 '14 at 18:59
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