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Random record in ActiveRecord
....first
# Rails 3
rand_record = Model.first(:offset => offset)
To be honest, I've just been using ORDER BY RAND() or RANDOM() (depending on the database). It's not a performance issue if you don't have a performance issue.
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The case against checked exceptions
...the end, I find it a bogus argument of Hejlsberg's and possibly a post-hoc one created to explain the lack rather than a well thought out decision.
I would argue that while the over-use of checked exceptions is a bad thing and tends to lead to sloppy handling by users, but the proper use of them al...
How do I iterate over an NSArray?
... implementation of -countByEnumeratingWithState:objects:count: places only one object in the buffer on each call.
I reported this in radar://6296108 (Fast enumeration of NSEnumerators is sluggish) but it was returned as Not To Be Fixed. The reason is that fast enumeration pre-fetches a group of obj...
Numpy first occurrence of value greater than existing value
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As hinted at in the above comment, this answer is off by one if N/2 is not in aa. The correct form would be np.searchsorted(aa, N/2, side='right') (without the +1). Both forms give the same index otherwise. Consider the test case of N being odd (and N/2.0 to force float if using py...
delete vs delete[] operators in C++
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If the standard doesn't define what happens when that is done, it is by definition "undefined behavior", even if your compiler deterministically does what you'd like it to do. Another compiler may do something entirely different.
– Rob K
Dec 23...
How can I override Bootstrap CSS styles?
... separate custom.css file instead of modifying bootstrap.css directly, one reason being that should bootstrap.css get an update, I'll suffer trying to re-include all my modifications. I'll sacrifice some load time for these styles, but it's negligible for the few styles I'm overriding.
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ssl_error_rx_record_too_long and Apache SSL [closed]
I've got a customer trying to access one of my sites, and they keep getting this error > ssl_error_rx_record_too_long
15 An...
What does a type followed by _t (underscore-t) represent?
... type names with the convention is ill-advised. The system I work on has done it (for more than 20 years); we regularly get tripped up by systems defining types with the same name as we define.
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.NET NewtonSoft JSON deserialize map to a different property name
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can i use two JsonProperty for one filed?
– Ali Yousefi
May 11 '15 at 19:56
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?
...of the warning and instead use the solution provided by John. Too bad this one is the accepted answer !
– Jérôme
Aug 31 '15 at 13:42
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