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Rails 3: Get Random Record
...-----+---------------+---------+---------+-------+------+-------+
we can now use only indexes and the primary key and do the job about 500 times faster!
UPDATE:
as pointed out by icantbecool in comments the above solution has a flaw if there are deleted records in the table.
A workaround in tha...
How do I programmatically force an onchange event on an input?
... This is how to do it properly, natively. Supported in all browsers now: caniuse.com/#feat=dispatchevent
– Willem Mulder
Aug 25 '16 at 10:38
...
Get the device width in javascript
...max-width value of the html tag:
maxwidth = $('html').css('max-width');
Now you can use this value to make conditional changes:
If (maxwidth == '480px') { do something }
If putting the max-width value on the html tag seems scary, then maybe you can put on a different tag, one that is only used...
Do subclasses inherit private fields?
...nate way. But it is still manifestly true that subclasses froggle (because now we don't have a word) the private fields of their parent class.
– DigitalRoss
Jan 17 '11 at 19:12
...
How do I get the fragment identifier (value after hash #) from a URL?
...
@SchalkKeun luckily, now in '18 it's almost gone. But for those who still have to deal with that legend should be aware of it.
– Sebastiaan Ordelman
Jun 22 '18 at 9:45
...
Setting environment variables on OS X
...en for apps launched via spotlight. So the selected answer is correct for Snow Leopard ;-)
– Louis Jacomet
Jun 9 '10 at 14:54
5
...
HTML encoding issues - “” character showing up instead of “ ”
...he HTML itself, which is always a highly dodgy business.
Well anyway, for now you can add one of the following to your document's <head> and see if that makes it look right in the browser:
for HTML4: <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
for HTML5: <m...
Difference between List, List, List, List, and List
...hink anyone would use it considering you can not have an identifier at all now.
– if_zero_equals_one
Jun 3 '11 at 21:22
1
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Check if a variable is of function type
...
This answer is a bit misleading now, as Underscore.js is now on revision 12, not the above-referenced revision 4, of its test of alternative isFunction() implementations. It currently uses something very close to what dandean suggested.
...
Why does Python use 'magic methods'?
...a part of Python, and it’s too
late to make such fundamental changes
now. The functions have to remain to
avoid massive code breakage.
The other "magical methods" (actually called special method in the Python folklore) make lots of sense, and similar functionality exists in other languages...