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What is q=0.5 in Accept* HTTP headers?
...y factor. It specifies what language the user would prefer, on a scale of 0 to 1, as can be seen from the HTTP/1.1 Specification, §14.4:
Each language-range MAY be given an associated quality value which represents an estimate of the user's preference for the languages specified by that range. Th...
Could not locate Gemfile
...
answered Jul 25 '10 at 16:40
JoniJoni
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How to avoid the “divide by zero” error in SQL?
... by zero" error we have programmed it like this:
Select Case when divisor=0 then null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now the only problem is to remember the NullIf bit, if I use the "/" key.
...
Add subdomain to localhost URL
...en (as root) the file /etc/hosts and add a line (or lines) like this:
127.0.0.1 example.com
127.0.0.1 subdomain.example.com
Your computer will now treat both example.com and subdomain.example.com as belonging to itself. If you visit either in your web browser, they will work the same, in pr...
Keep only first n characters in a string?
...r JavaScript's String method substring
e.g.
'Hiya how are you'.substring(0,8);
Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'.
substring documentation
s...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
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edited Oct 7 '09 at 0:02
answered Oct 6 '09 at 23:52
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How to scale SVG image to fill browser window?
...
How about:
html, body { margin:0; padding:0; overflow:hidden }
svg { position:fixed; top:0; bottom:0; left:0; right:0 }
Or:
html, body { margin:0; padding:0; overflow:hidden }
svg { position:fixed; top:0; left:0; height:100%; width:100% }
I have an ex...
Fastest way to flatten / un-flatten nested JSON objects
...
+500
Here's my much shorter implementation:
Object.unflatten = function(data) {
"use strict";
if (Object(data) !== data || Array....
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
...
230
For fitting y = A + B log x, just fit y against (log x).
>>> x = numpy.array([1, 7, 20...
What is the default value for enum variable?
...
It is whatever member of the enumeration represents the value 0. Specifically, from the documentation:
The default value of an enum E is the value produced by the expression (E)0.
As an example, take the following enum:
enum E
{
Foo, Bar, Baz, Quux
}
Without overriding the ...