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What is the difference between `after_create` and `after_save` and when to use which?
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after_create only works once - just after the record is first created.
after_save works every time you save the object - even if you're just updating it many years later
So if you want to do this email operation only just the once (and then nev...
Usage of sys.stdout.flush() method
...e good information about (un)buffered I/O and why it's useful:
http://en.wikipedia.org/wiki/Data_buffer
Buffered vs unbuffered IO
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Creating range in JavaScript - strange syntax
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Understanding this "hack" requires understanding several things:
Why we don't just do Array(5).map(...)
How Function.prototype.apply handles arguments
How Array handles multiple arguments
How the Number function handles arguments
What Function.pr...
Remove 'a' from legend when using aesthetics and geom_text
...he geom_text , then the 'a' letter will not show in the legend. I want to keep geom_text , though.
6 Answers
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How to list of all the tables defined for the database when using active record?
... François BeausoleilFrançois Beausoleil
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Why do my list item bullets overlap floating elements
...e box.
Only IE6 needs an ul { zoom: 1; } in our conditional comments to make sure the ul has layout.
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How do I change the default port (9000) that Play uses when I execute the “run” command?
How can I change the default port used by the play framework in development mode when issueing the "run" command on the play console.
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jQuery datepicker set selected date, on the fly
How can I change the selected date of jquery Date picker dynamically on the fly?
I have say created a inline date picker.
Then after some time, I want to reflect a different date there without recreating the datepicker from the scratch.
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What is stability in sorting algorithms and why is it important?
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A sorting algorithm is said to be stable if two objects with equal keys appear in the same order in sorted output as they appear in the input array to be sorted. Some sorting algorithms are stable by nature like Insertion sort, Merge Sort, Bubble Sort, etc. And some sorting algorithms are no...
Using awk to print all columns from the nth to the last
This line worked until I had whitespace in the second field.
24 Answers
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