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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...it is already set to false (because false and nil are both as falsy). I.e. x ||= true is equivalent to x = true. You can see how that might pose a problem. It only happens with booleans because no other datatype in Ruby has a falsy value.
– Amadan
Jun 10 '13 at...
What do people think of the fossil DVCS? [closed]
... an sQLite database is arguably safer than any other approach. See link text for some of the advantages of using a transactional database to store a repository. As for bloat: The entire thing is in a single self-contained executable which seems to disprove that concern.
Full disclosure: I am th...
How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
...
How to download image using requests
... With the help of your answer I could able to find data in text file, steps I used are r2 = requests.post(r.url, data); print r2.content. But now I also want to know filename. is their any cleaned way? -- presently I found file name in header -- r2.headers['content-disposition'] that ...
In laymans terms, what does 'static' mean in Java? [duplicate]
...
Great explanation! I appreciate it.
– stackexchange12
Feb 12 '14 at 14:01
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Using LIMIT within GROUP BY to get N results per group?
... rate DESC) grouped_year
FROM
yourtable
GROUP BY id) group_max
ON yourtable.id = group_max.id
AND FIND_IN_SET(year, grouped_year) BETWEEN 1 AND 5
ORDER BY
yourtable.id, yourtable.year DESC;
Please see fiddle here.
Please note that if more than one row can have the same rate...
How to keep the console window open in Visual C++?
...y open with the Press any key to continue . . . message after the program exits.
Note that this requires the Console (/SUBSYSTEM:CONSOLE) linker option, which you can enable as follows:
Open up your project, and go to the Solution Explorer. If you're following along with me in K&R, your "Solu...
What is the difference between 'content' and 'text'
...Python Requests library. I notice that the fine documentation has many examples of how to do something without explaining the why . For instance, both r.text and r.content are shown as examples of how to get the server response. But where is it explained what these properties do? For i...
Simpler way to put PDB breakpoints in Python code?
...ion. I've been a bit spoiled with debuggers in IDEs like Visual Studio and XCode. I find it a bit clumsy to have to type import pdb; pdb.set_trace() to set a breakpoint (I'd rather not import pdb at the top of the file as I might forget and leave it in).
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